Organisationsahrefsocannl0abd20 ()debian-12-5.3+flambda_opam-2.4

debian-12-5.3+flambda_opam-2.4

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2025-08-09 21:07.55: New job: test ahrefs/ocannl https://github.com/ahrefs/ocannl.git#refs/heads/master (0abd20bce94cc89208655a47b9fe3b84a3bc4f82) (linux-x86_64:debian-12-5.3+flambda_opam-2.4)
Base: ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:bc87a3a3e7ab52284be6c3db2016fad5b20704dd9d74b10ac786ae3a7af56f68
Opam project build

To reproduce locally:

git clone --recursive "https://github.com/ahrefs/ocannl.git" -b "master" && cd "ocannl" && git reset --hard 0abd20bc
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:bc87a3a3e7ab52284be6c3db2016fad5b20704dd9d74b10ac786ae3a7af56f68
# debian-12-5.3+flambda_opam-2.4
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
RUN sudo ln -f /usr/bin/opam-2.4 /usr/bin/opam
RUN opam init --reinit -ni
RUN uname -rs && opam exec -- ocaml -version && opam --version
WORKDIR /src
RUN sudo chown opam /src
RUN cd ~/opam-repository && (git cat-file -e e77940d8ff8706305602d0d643bf01c77beef2e7 || git fetch origin master) && git reset -q --hard e77940d8ff8706305602d0d643bf01c77beef2e7 && git log --no-decorate -n1 --oneline && opam update -u
COPY --chown=1000:1000 neural_nets_lib.opam arrayjit.opam ./
RUN opam pin add -yn neural_nets_lib.dev './' && \
    opam pin add -yn arrayjit.dev './'
RUN echo '(lang dune 3.0)' > './dune-project'
ENV DEPS="angstrom.0.16.1 astring.0.8.5 backoff.0.1.1 base.v0.17.3 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigarray-compat.1.1.0 bigstringaf.0.10.0 camlp-streams.5.0.1 camlzip.1.13 cmdliner.1.3.0 conf-libcurl.2 conf-libffi.2.0.0 conf-pkg-config.4 conf-zlib.1 cppo.1.8.0 csexp.1.5.2 csv.2.4 ctypes.0.23.0 ctypes-foreign.0.23.0 curl.0.10.0 dune.3.19.1 dune-configurator.3.19.1 dune-private-libs.3.19.1 dune-site.3.19.1 dyn.3.19.1 fieldslib.v0.17.0 fmt.0.11.0 integers.0.7.0 jane-street-headers.v0.17.0 jst-config.v0.17.0 logs.0.9.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 num.1.6 ocaml.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-syntax-shims.1.0.0 ocaml-variants.5.3.0+options ocaml-version.4.0.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ordering.3.19.1 parsexp.v0.17.0 pp.2.0.0 pprint.20230830 ppx_assert.v0.17.0 ppx_base.v0.17.0 ppx_cold.v0.17.0 ppx_compare.v0.17.0 ppx_derivers.1.2.1 ppx_deriving.6.1.1 ppx_enumerate.v0.17.0 ppx_expect.v0.17.3 ppx_fields_conv.v0.17.0 ppx_globalize.v0.17.2 ppx_hash.v0.17.0 ppx_here.v0.17.0 ppx_inline_test.v0.17.1 ppx_minidebug.2.3.0 ppx_optcomp.v0.17.1 ppx_sexp_conv.v0.17.1 ppx_string.v0.17.0 ppx_variants_conv.v0.17.1 ppxlib.0.36.0 ppxlib_jane.v0.17.4 printbox.0.12 printbox-ext-plot.0.12 printbox-html.0.12 printbox-md.0.12 printbox-text.0.12 ptime.1.2.0 re.1.13.2 result.1.5 saturn_lockfree.0.5.0 seq.base sexplib.v0.17.0 sexplib0.v0.17.0 stdio.v0.17.0 stdlib-shims.0.3.0 stdune.3.19.1 thread-local-storage.0.2 time_now.v0.17.0 topkg.1.1.0 tyxml.4.6.0 uucp.16.0.0 uutf.1.0.4 variantslib.v0.17.0"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.4 --depext-only -y neural_nets_lib.dev arrayjit.dev $DEPS
RUN opam install $DEPS
COPY --chown=1000:1000 . /src
RUN opam exec -- dune build @install @check @runtest && rm -rf _build

END-OF-DOCKERFILE
docker build .
END-REPRO-BLOCK

2025-08-09 21:07.55: Using cache hint "ahrefs/ocannl-ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:bc87a3a3e7ab52284be6c3db2016fad5b20704dd9d74b10ac786ae3a7af56f68-debian-12-5.3+flambda_opam-2.4-132475af3e6ddd44ad76e37f5d1f298b"
2025-08-09 21:07.55: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:bc87a3a3e7ab52284be6c3db2016fad5b20704dd9d74b10ac786ae3a7af56f68)
 (comment debian-12-5.3+flambda_opam-2.4)
 (user (uid 1000) (gid 1000))
 (env CLICOLOR_FORCE 1)
 (env OPAMCOLOR always)
 (workdir /src)
 (run (shell "sudo ln -f /usr/bin/opam-2.4 /usr/bin/opam"))
 (run (shell "opam init --reinit -ni"))
 (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
 (workdir /src)
 (run (shell "sudo chown opam /src"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell "cd ~/opam-repository && (git cat-file -e e77940d8ff8706305602d0d643bf01c77beef2e7 || git fetch origin master) && git reset -q --hard e77940d8ff8706305602d0d643bf01c77beef2e7 && git log --no-decorate -n1 --oneline && opam update -u"))
 (copy (src neural_nets_lib.opam arrayjit.opam) (dst ./))
 (run (network host)
      (shell  "opam pin add -yn neural_nets_lib.dev './' && \
             \nopam pin add -yn arrayjit.dev './'"))
 (run (network host)
      (shell "echo '(lang dune 3.0)' > './dune-project'"))
 (env DEPS "angstrom.0.16.1 astring.0.8.5 backoff.0.1.1 base.v0.17.3 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigarray-compat.1.1.0 bigstringaf.0.10.0 camlp-streams.5.0.1 camlzip.1.13 cmdliner.1.3.0 conf-libcurl.2 conf-libffi.2.0.0 conf-pkg-config.4 conf-zlib.1 cppo.1.8.0 csexp.1.5.2 csv.2.4 ctypes.0.23.0 ctypes-foreign.0.23.0 curl.0.10.0 dune.3.19.1 dune-configurator.3.19.1 dune-private-libs.3.19.1 dune-site.3.19.1 dyn.3.19.1 fieldslib.v0.17.0 fmt.0.11.0 integers.0.7.0 jane-street-headers.v0.17.0 jst-config.v0.17.0 logs.0.9.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 num.1.6 ocaml.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-syntax-shims.1.0.0 ocaml-variants.5.3.0+options ocaml-version.4.0.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ordering.3.19.1 parsexp.v0.17.0 pp.2.0.0 pprint.20230830 ppx_assert.v0.17.0 ppx_base.v0.17.0 ppx_cold.v0.17.0 ppx_compare.v0.17.0 ppx_derivers.1.2.1 ppx_deriving.6.1.1 ppx_enumerate.v0.17.0 ppx_expect.v0.17.3 ppx_fields_conv.v0.17.0 ppx_globalize.v0.17.2 ppx_hash.v0.17.0 ppx_here.v0.17.0 ppx_inline_test.v0.17.1 ppx_minidebug.2.3.0 ppx_optcomp.v0.17.1 ppx_sexp_conv.v0.17.1 ppx_string.v0.17.0 ppx_variants_conv.v0.17.1 ppxlib.0.36.0 ppxlib_jane.v0.17.4 printbox.0.12 printbox-ext-plot.0.12 printbox-html.0.12 printbox-md.0.12 printbox-text.0.12 ptime.1.2.0 re.1.13.2 result.1.5 saturn_lockfree.0.5.0 seq.base sexplib.v0.17.0 sexplib0.v0.17.0 stdio.v0.17.0 stdlib-shims.0.3.0 stdune.3.19.1 thread-local-storage.0.2 time_now.v0.17.0 topkg.1.1.0 tyxml.4.6.0 uucp.16.0.0 uutf.1.0.4 variantslib.v0.17.0")
 (env CI true)
 (env OCAMLCI true)
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell "opam update --depexts && opam install --cli=2.4 --depext-only -y neural_nets_lib.dev arrayjit.dev $DEPS"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell "opam install $DEPS"))
 (copy (src .) (dst /src))
 (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
)

2025-08-09 21:07.55: Waiting for resource in pool OCluster
2025-08-09 21:07.55: Waiting for worker…
2025-08-09 21:07.55: Got resource from pool OCluster
Building on bremusa.ocamllabs.io
All commits already cached
HEAD is now at 0abd20bc New test moons_demo_mini; updates test expectations; unfortunately, bigram is nondeterministic; and moons_demo is broken on multicore_cc but probably an unlucky random seed because moons_demo_parallel works well

(from ocaml/opam:debian-12-ocaml-5.3-flambda@sha256:bc87a3a3e7ab52284be6c3db2016fad5b20704dd9d74b10ac786ae3a7af56f68)
2025-08-09 21:07.57 ---> using "8f19063995d2e91975b673384143fa4316c06cf525acaad5ddc9dfe32e879b21" from cache

/: (comment debian-12-5.3+flambda_opam-2.4)

/: (user (uid 1000) (gid 1000))

/: (env CLICOLOR_FORCE 1)

/: (env OPAMCOLOR always)

/: (workdir /src)

/src: (run (shell "sudo ln -f /usr/bin/opam-2.4 /usr/bin/opam"))
2025-08-09 21:07.57 ---> using "3964d961645aac4701995e7afa81c4230383d448cff22e07a607fd337d9459ea" from cache

/src: (run (shell "opam init --reinit -ni"))
Configuring from /home/opam/.opamrc and then from built-in defaults.
Checking for available remotes: rsync and local, git.
  - you won't be able to use mercurial repositories unless you install the hg command on your system.
  - you won't be able to use darcs repositories unless you install the darcs command on your system.

This version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.2, which can't be reverted.
You may want to back it up before going further.

Continue? [Y/n] y
Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2025-08-09 21:07.57 ---> using "5aebcfda9685f3a603e14fa984661649d5b4c24cad7ac53b2dbd7993b0191857" from cache

/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-63-generic
The OCaml toplevel, version 5.3.0
2.4.1
2025-08-09 21:07.57 ---> using "b3767d8466038a203e474e97e3c72b7e65c6cd3e74da7a70330f79ca1443edbb" from cache

/src: (workdir /src)

/src: (run (shell "sudo chown opam /src"))
2025-08-09 21:07.57 ---> using "3777998cb18ca2c1bd519ed60e51da93fddf8559566beec5a9ce7afd99330774" from cache

/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
           (network host)
           (shell "cd ~/opam-repository && (git cat-file -e e77940d8ff8706305602d0d643bf01c77beef2e7 || git fetch origin master) && git reset -q --hard e77940d8ff8706305602d0d643bf01c77beef2e7 && git log --no-decorate -n1 --oneline && opam update -u"))
e77940d8ff Merge pull request #28255 from dbuenzli/b0-publish-fmt.0.11.0

<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>
[default] synchronised from git+file:///home/opam/opam-repository

Already up-to-date.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2025-08-09 21:07.57 ---> using "63b31d405cf8a512f06ec83086bb2087cf3a01b407c89d327ccfecbb2baa0e5a" from cache

/src: (copy (src neural_nets_lib.opam arrayjit.opam) (dst ./))
2025-08-09 21:07.57 ---> using "2d0faef7c38b3b7928d9e5d425bc401536047ef00db7c3d8993a8a1b358edd4f" from cache

/src: (run (network host)
           (shell  "opam pin add -yn neural_nets_lib.dev './' && \
                  \nopam pin add -yn arrayjit.dev './'"))
[neural_nets_lib.dev] synchronised (file:///src)
neural_nets_lib is now pinned to file:///src (version dev)
[arrayjit.dev] synchronised (file:///src)
arrayjit is now pinned to file:///src (version dev)
2025-08-09 21:07.57 ---> using "6c2ab594ad659ceacf9e4b8bcc4a86c7c471fc620454908adc5cb5b056b4696a" from cache

/src: (run (network host)
           (shell "echo '(lang dune 3.0)' > './dune-project'"))
2025-08-09 21:07.57 ---> using "08254241e4455cfa54ce1c982394b67c3f9e43e8d83d366fa9e9b3d26f40875d" from cache

/src: (env DEPS "angstrom.0.16.1 astring.0.8.5 backoff.0.1.1 base.v0.17.3 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigarray-compat.1.1.0 bigstringaf.0.10.0 camlp-streams.5.0.1 camlzip.1.13 cmdliner.1.3.0 conf-libcurl.2 conf-libffi.2.0.0 conf-pkg-config.4 conf-zlib.1 cppo.1.8.0 csexp.1.5.2 csv.2.4 ctypes.0.23.0 ctypes-foreign.0.23.0 curl.0.10.0 dune.3.19.1 dune-configurator.3.19.1 dune-private-libs.3.19.1 dune-site.3.19.1 dyn.3.19.1 fieldslib.v0.17.0 fmt.0.11.0 integers.0.7.0 jane-street-headers.v0.17.0 jst-config.v0.17.0 logs.0.9.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 num.1.6 ocaml.5.3.0 ocaml-compiler.5.3.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-syntax-shims.1.0.0 ocaml-variants.5.3.0+options ocaml-version.4.0.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ordering.3.19.1 parsexp.v0.17.0 pp.2.0.0 pprint.20230830 ppx_assert.v0.17.0 ppx_base.v0.17.0 ppx_cold.v0.17.0 ppx_compare.v0.17.0 ppx_derivers.1.2.1 ppx_deriving.6.1.1 ppx_enumerate.v0.17.0 ppx_expect.v0.17.3 ppx_fields_conv.v0.17.0 ppx_globalize.v0.17.2 ppx_hash.v0.17.0 ppx_here.v0.17.0 ppx_inline_test.v0.17.1 ppx_minidebug.2.3.0 ppx_optcomp.v0.17.1 ppx_sexp_conv.v0.17.1 ppx_string.v0.17.0 ppx_variants_conv.v0.17.1 ppxlib.0.36.0 ppxlib_jane.v0.17.4 printbox.0.12 printbox-ext-plot.0.12 printbox-html.0.12 printbox-md.0.12 printbox-text.0.12 ptime.1.2.0 re.1.13.2 result.1.5 saturn_lockfree.0.5.0 seq.base sexplib.v0.17.0 sexplib0.v0.17.0 stdio.v0.17.0 stdlib-shims.0.3.0 stdune.3.19.1 thread-local-storage.0.2 time_now.v0.17.0 topkg.1.1.0 tyxml.4.6.0 uucp.16.0.0 uutf.1.0.4 variantslib.v0.17.0")

/src: (env CI true)

/src: (env OCAMLCI true)

/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
           (network host)
           (shell "opam update --depexts && opam install --cli=2.4 --depext-only -y neural_nets_lib.dev arrayjit.dev $DEPS"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian bookworm InRelease
- Get:2 http://deb.debian.org/debian bookworm-updates InRelease [55.4 kB]
- Get:3 http://deb.debian.org/debian-security bookworm-security InRelease [48.0 kB]
- Get:4 http://deb.debian.org/debian bookworm-updates/main amd64 Packages.diff/Index [20.7 kB]
- Ign:4 http://deb.debian.org/debian bookworm-updates/main amd64 Packages.diff/Index
- Get:5 http://deb.debian.org/debian bookworm-updates/main amd64 Packages [6924 B]
- Get:6 http://deb.debian.org/debian-security bookworm-security/main amd64 Packages [272 kB]
- Fetched 403 kB in 0s (857 kB/s)
- Reading package lists...
- 

<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[arrayjit.dev] synchronised (file:///src)
[neural_nets_lib.dev] synchronised (file:///src)

[NOTE] Package ocaml-variants is already installed (current version is 5.3.0+options).
[NOTE] Package ocaml-config is already installed (current version is 3).
[NOTE] Package ocaml-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml is already installed (current version is 5.3.0).
[NOTE] Package base-unix is already installed (current version is base).
[NOTE] Package base-threads is already installed (current version is base).
[NOTE] Package base-nnp is already installed (current version is base).
[NOTE] Package base-effects is already installed (current version is base).
[NOTE] Package base-domains is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).

The following system packages will first need to be installed:
    libcurl4-gnutls-dev libffi-dev pkg-config zlib1g-dev

<><> Handling external dependencies <><><><><><><><><><><><><><><><><><><><><><>

+ /usr/bin/sudo "apt-get" "install" "-qq" "-yy" "libcurl4-gnutls-dev" "libffi-dev" "pkg-config" "zlib1g-dev"
- debconf: delaying package configuration, since apt-utils is not installed
- Selecting previously unselected package libcurl4-gnutls-dev:amd64.
- (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
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(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 18778 files and directories currently installed.)
- Preparing to unpack .../0-libcurl4-gnutls-dev_7.88.1-10+deb12u12_amd64.deb ...
- Unpacking libcurl4-gnutls-dev:amd64 (7.88.1-10+deb12u12) ...
- Selecting previously unselected package libffi-dev:amd64.
- Preparing to unpack .../1-libffi-dev_3.4.4-1_amd64.deb ...
- Unpacking libffi-dev:amd64 (3.4.4-1) ...
- Selecting previously unselected package libpkgconf3:amd64.
- Preparing to unpack .../2-libpkgconf3_1.8.1-1_amd64.deb ...
- Unpacking libpkgconf3:amd64 (1.8.1-1) ...
- Selecting previously unselected package pkgconf-bin.
- Preparing to unpack .../3-pkgconf-bin_1.8.1-1_amd64.deb ...
- Unpacking pkgconf-bin (1.8.1-1) ...
- Selecting previously unselected package pkgconf:amd64.
- Preparing to unpack .../4-pkgconf_1.8.1-1_amd64.deb ...
- Unpacking pkgconf:amd64 (1.8.1-1) ...
- Selecting previously unselected package pkg-config:amd64.
- Preparing to unpack .../5-pkg-config_1.8.1-1_amd64.deb ...
- Unpacking pkg-config:amd64 (1.8.1-1) ...
- Selecting previously unselected package zlib1g-dev:amd64.
- Preparing to unpack .../6-zlib1g-dev_1%3a1.2.13.dfsg-1_amd64.deb ...
- Unpacking zlib1g-dev:amd64 (1:1.2.13.dfsg-1) ...
- Setting up libcurl4-gnutls-dev:amd64 (7.88.1-10+deb12u12) ...
- Setting up libffi-dev:amd64 (3.4.4-1) ...
- Setting up libpkgconf3:amd64 (1.8.1-1) ...
- Setting up pkgconf-bin (1.8.1-1) ...
- Setting up zlib1g-dev:amd64 (1:1.2.13.dfsg-1) ...
- Setting up pkgconf:amd64 (1.8.1-1) ...
- Setting up pkg-config:amd64 (1.8.1-1) ...
- Processing triggers for libc-bin (2.36-9+deb12u10) ...
2025-08-09 21:07.57 ---> using "01a0bc33ee314b71f22700bd6686aea6d06a02e7c6dedc62941cf37400eb4125" from cache

/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
           (network host)
           (shell "opam install $DEPS"))
[NOTE] Package ocaml-variants is already installed (current version is 5.3.0+options).
[NOTE] Package ocaml-config is already installed (current version is 3).
[NOTE] Package ocaml-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml is already installed (current version is 5.3.0).
[NOTE] Package base-unix is already installed (current version is base).
[NOTE] Package base-threads is already installed (current version is base).
[NOTE] Package base-nnp is already installed (current version is base).
[NOTE] Package base-effects is already installed (current version is base).
[NOTE] Package base-domains is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).
The following actions will be performed:
=== install 87 packages
  - install angstrom                0.16.1
  - install astring                 0.8.5
  - install backoff                 0.1.1
  - install base                    v0.17.3
  - install base-bytes              base
  - install bigarray-compat         1.1.0
  - install bigstringaf             0.10.0
  - install camlp-streams           5.0.1
  - install camlzip                 1.13
  - install cmdliner                1.3.0
  - install conf-libcurl            2
  - install conf-libffi             2.0.0
  - install conf-pkg-config         4
  - install conf-zlib               1
  - install cppo                    1.8.0
  - install csexp                   1.5.2
  - install csv                     2.4
  - install ctypes                  0.23.0
  - install ctypes-foreign          0.23.0
  - install curl                    0.10.0
  - install dune                    3.19.1
  - install dune-configurator       3.19.1
  - install dune-private-libs       3.19.1
  - install dune-site               3.19.1
  - install dyn                     3.19.1
  - install fieldslib               v0.17.0
  - install fmt                     0.11.0
  - install integers                0.7.0
  - install jane-street-headers     v0.17.0
  - install jst-config              v0.17.0
  - install logs                    0.9.0
  - install mdx                     2.5.0
  - install mtime                   2.1.0
  - install multicore-magic         2.3.1
  - install num                     1.6
  - install ocaml-compiler-libs     v0.17.0
  - install ocaml-syntax-shims      1.0.0
  - install ocaml-version           4.0.1
  - install ocaml_intrinsics_kernel v0.17.1
  - install ocamlbuild              0.16.1
  - install ocamlfind               1.9.8
  - install ordering                3.19.1
  - install parsexp                 v0.17.0
  - install pp                      2.0.0
  - install pprint                  20230830
  - install ppx_assert              v0.17.0
  - install ppx_base                v0.17.0
  - install ppx_cold                v0.17.0
  - install ppx_compare             v0.17.0
  - install ppx_derivers            1.2.1
  - install ppx_deriving            6.1.1
  - install ppx_enumerate           v0.17.0
  - install ppx_expect              v0.17.3
  - install ppx_fields_conv         v0.17.0
  - install ppx_globalize           v0.17.2
  - install ppx_hash                v0.17.0
  - install ppx_here                v0.17.0
  - install ppx_inline_test         v0.17.1
  - install ppx_minidebug           2.3.0
  - install ppx_optcomp             v0.17.1
  - install ppx_sexp_conv           v0.17.1
  - install ppx_string              v0.17.0
  - install ppx_variants_conv       v0.17.1
  - install ppxlib                  0.36.0
  - install ppxlib_jane             v0.17.4
  - install printbox                0.12
  - install printbox-ext-plot       0.12
  - install printbox-html           0.12
  - install printbox-md             0.12
  - install printbox-text           0.12
  - install ptime                   1.2.0
  - install re                      1.13.2
  - install result                  1.5
  - install saturn_lockfree         0.5.0
  - install seq                     base
  - install sexplib                 v0.17.0
  - install sexplib0                v0.17.0
  - install stdio                   v0.17.0
  - install stdlib-shims            0.3.0
  - install stdune                  3.19.1
  - install thread-local-storage    0.2
  - install time_now                v0.17.0
  - install topkg                   1.1.0
  - install tyxml                   4.6.0
  - install uucp                    16.0.0
  - install uutf                    1.0.4
  - install variantslib             v0.17.0

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved angstrom.0.16.1  (cached)
-> retrieved astring.0.8.5  (cached)
-> retrieved backoff.0.1.1  (cached)
-> retrieved bigarray-compat.1.1.0  (cached)
-> retrieved bigstringaf.0.10.0  (cached)
-> retrieved base.v0.17.3  (cached)
-> retrieved camlp-streams.5.0.1  (cached)
-> retrieved camlzip.1.13  (cached)
-> retrieved cmdliner.1.3.0  (cached)
-> retrieved cppo.1.8.0  (cached)
-> installed conf-libcurl.2
-> installed conf-pkg-config.4
-> retrieved csexp.1.5.2  (cached)
-> retrieved csv.2.4  (cached)
-> retrieved ctypes.0.23.0, ctypes-foreign.0.23.0  (cached)
-> installed conf-libffi.2.0.0
-> installed conf-zlib.1
-> retrieved curl.0.10.0  (cached)
-> retrieved fieldslib.v0.17.0  (cached)
-> retrieved fmt.0.11.0  (cached)
-> retrieved integers.0.7.0  (cached)
-> retrieved jane-street-headers.v0.17.0  (cached)
-> retrieved jst-config.v0.17.0  (cached)
-> retrieved logs.0.9.0  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved multicore-magic.2.3.1  (cached)
-> retrieved mdx.2.5.0  (cached)
-> retrieved num.1.6  (cached)
-> retrieved ocaml-compiler-libs.v0.17.0  (cached)
-> retrieved ocaml-syntax-shims.1.0.0  (cached)
-> retrieved ocaml-version.4.0.1  (cached)
-> retrieved ocaml_intrinsics_kernel.v0.17.1  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved dune.3.19.1, dune-configurator.3.19.1, dune-private-libs.3.19.1, dune-site.3.19.1, dyn.3.19.1, ordering.3.19.1, stdune.3.19.1  (cached)
-> retrieved parsexp.v0.17.0  (cached)
-> retrieved pp.2.0.0  (cached)
-> retrieved pprint.20230830  (cached)
-> retrieved ppx_assert.v0.17.0  (cached)
-> retrieved ppx_base.v0.17.0  (cached)
-> retrieved ppx_cold.v0.17.0  (cached)
-> retrieved ppx_derivers.1.2.1  (cached)
-> retrieved ppx_compare.v0.17.0  (cached)
-> retrieved ppx_deriving.6.1.1  (cached)
-> retrieved ppx_enumerate.v0.17.0  (cached)
-> retrieved ppx_expect.v0.17.3  (cached)
-> retrieved ppx_fields_conv.v0.17.0  (cached)
-> installed cmdliner.1.3.0
-> installed num.1.6
-> retrieved ppx_globalize.v0.17.2  (cached)
-> retrieved ppx_hash.v0.17.0  (cached)
-> retrieved ppx_here.v0.17.0  (cached)
-> retrieved ppx_inline_test.v0.17.1  (cached)
-> retrieved ppx_optcomp.v0.17.1  (cached)
-> retrieved ppx_minidebug.2.3.0  (cached)
-> retrieved ppx_sexp_conv.v0.17.1  (cached)
-> retrieved ppx_string.v0.17.0  (cached)
-> retrieved ppx_variants_conv.v0.17.1  (cached)
-> retrieved ppxlib_jane.v0.17.4  (cached)
-> retrieved ptime.1.2.0  (cached)
-> retrieved re.1.13.2  (cached)
-> retrieved result.1.5  (cached)
-> retrieved saturn_lockfree.0.5.0  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved sexplib.v0.17.0  (cached)
-> retrieved ppxlib.0.36.0  (cached)
-> retrieved printbox.0.12, printbox-ext-plot.0.12, printbox-html.0.12, printbox-md.0.12, printbox-text.0.12  (cached)
-> retrieved sexplib0.v0.17.0  (cached)
-> retrieved stdio.v0.17.0  (cached)
-> retrieved stdlib-shims.0.3.0  (cached)
-> retrieved thread-local-storage.0.2  (cached)
-> retrieved time_now.v0.17.0  (cached)
-> retrieved topkg.1.1.0  (cached)
-> retrieved tyxml.4.6.0  (cached)
-> retrieved uutf.1.0.4  (cached)
-> retrieved variantslib.v0.17.0  (cached)
-> retrieved uucp.16.0.0  (cached)
-> installed ocamlfind.1.9.8
-> installed base-bytes.base
-> installed camlzip.1.13
-> installed ocamlbuild.0.16.1
-> installed topkg.1.1.0
-> installed uutf.1.0.4
-> installed mtime.2.1.0
-> installed fmt.0.11.0
-> installed ptime.1.2.0
-> installed astring.0.8.5
-> installed logs.0.9.0
-> installed dune.3.19.1
-> installed backoff.0.1.1
-> installed bigarray-compat.1.1.0
-> installed camlp-streams.5.0.1
-> installed csexp.1.5.2
-> installed cppo.1.8.0
-> installed csv.2.4
-> installed jane-street-headers.v0.17.0
-> installed multicore-magic.2.3.1
-> installed ocaml-compiler-libs.v0.17.0
-> installed ocaml-syntax-shims.1.0.0
-> installed ocaml-version.4.0.1
-> installed ocaml_intrinsics_kernel.v0.17.1
-> installed pp.2.0.0
-> installed pprint.20230830
-> installed ppx_derivers.1.2.1
-> installed printbox.0.12
-> installed result.1.5
-> installed sexplib0.v0.17.0
-> installed stdlib-shims.0.3.0
-> installed thread-local-storage.0.2
-> installed re.1.13.2
-> installed saturn_lockfree.0.5.0
-> installed integers.0.7.0
-> installed ordering.3.19.1
-> installed parsexp.v0.17.0
-> installed dune-configurator.3.19.1
-> installed bigstringaf.0.10.0
-> installed dyn.3.19.1
-> installed sexplib.v0.17.0
-> installed angstrom.0.16.1
-> installed mdx.2.5.0
-> installed curl.0.10.0
-> installed tyxml.4.6.0
-> installed printbox-html.0.12
-> installed stdune.3.19.1
-> installed uucp.16.0.0
-> installed ctypes.0.23.0
-> installed printbox-text.0.12
-> installed printbox-md.0.12
-> installed base.v0.17.3
-> installed printbox-ext-plot.0.12
-> installed dune-private-libs.3.19.1
-> installed fieldslib.v0.17.0
-> installed stdio.v0.17.0
-> installed variantslib.v0.17.0
-> installed ctypes-foreign.0.23.0
-> installed dune-site.3.19.1
-> installed ppxlib.0.36.0
-> installed ppx_optcomp.v0.17.1
-> installed ppxlib_jane.v0.17.4
-> installed ppx_cold.v0.17.0
-> installed ppx_here.v0.17.0
-> installed ppx_variants_conv.v0.17.1
-> installed ppx_fields_conv.v0.17.0
-> installed ppx_enumerate.v0.17.0
-> installed ppx_globalize.v0.17.2
-> installed ppx_deriving.6.1.1
-> installed ppx_compare.v0.17.0
-> installed ppx_sexp_conv.v0.17.1
-> installed ppx_hash.v0.17.0
-> installed ppx_assert.v0.17.0
-> installed ppx_minidebug.2.3.0
-> installed ppx_base.v0.17.0
-> installed jst-config.v0.17.0
-> installed ppx_string.v0.17.0
-> installed time_now.v0.17.0
-> installed ppx_inline_test.v0.17.1
-> installed ppx_expect.v0.17.3
Done.
# To update the current shell environment, run: eval $(opam env)
2025-08-09 21:07.57 ---> using "59f43b81e48adac6abe6cd91a0c36b11352f9254e0345efe4f665e4f4d8f8556" from cache

/src: (copy (src .) (dst /src))
2025-08-09 21:07.58 ---> saved as "7bc0b3b88a357f40911932d07e1399dcb0301ff4524b28e6d1ea2fc15b66c068"

/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
File "arrayjit/test/dune", line 6, characters 16-24:
6 |   (pps ppx_here ppx_jane)))
                    ^^^^^^^^
Error: Library "ppx_jane" not found.
-> required by
   _build/default/arrayjit/test/.merlin-conf/exe-test_numerical_types
-> required by alias arrayjit/test/check
(cd _build/default/test/operations/config && ../../../arrayjit/bin/read_config.exe --read=backend)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Wrote value of 'backend' to ocannl_backend.txt
(cd _build/default/test/operations && ./threefry4x32_demo.exe --ocannl_output_prec_in_ll_files=true --ocannl_output_debug_files_in_build_directory=true --ocannl_clean_up_artifacts_on_startup=true)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Generated 48 uniform random numbers:
  [0]: 0.831543
  [1]: 0.237549
  [2]: 0.951172
  [3]: 0.120911
  [4]: 0.862793
  [5]: 0.485352
  [6]: 0.674316
  [7]: 0.235840
  [8]: 0.940918
  [9]: 0.007248
  [10]: 0.228271
  [11]: 0.902832
  [12]: 0.403564
  [13]: 0.635254
  [14]: 0.440674
  [15]: 0.443604
  [16]: 0.985352
  [17]: 0.635254
  [18]: 0.252686
  [19]: 0.655762
  [20]: 0.506836
  [21]: 0.048828
  [22]: 0.914551
  [23]: 0.854004
  [24]: 0.942871
  [25]: 0.836426
  [26]: 0.276855
  [27]: 0.749023
  [28]: 0.879883
  [29]: 0.045044
  [30]: 0.203247
  [31]: 0.380127
  [32]: 0.145630
  [33]: 0.250000
  [34]: 0.541016
  [35]: 0.626953
  [36]: 0.852051
  [37]: 0.109009
  [38]: 0.480713
  [39]: 0.904785
  [40]: 0.415039
  [41]: 0.346924
  [42]: 0.269287
  [43]: 0.016891
  [44]: 0.469238
  [45]: 0.454346
  [46]: 0.672852
  [47]: 0.538086
(cd _build/.sandbox/dd1b47d5b5fa95ee4f9ff4885e4632e7/default/test/einsum && .einsum_tutorials.inline-tests/inline-test-runner.exe inline-test-runner einsum_tutorials -partition 'Found 0, in the config file' -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/dd1b47d5b5fa95ee4f9ff4885e4632e7/default/test/einsum && .einsum_tutorials.inline-tests/inline-test-runner.exe inline-test-runner einsum_tutorials -partition 'Retrieving commandline, environment, or config file variable ocannl_log_level' -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/default/test/operations && ./test_threefry_precision.exe)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Threefry4x32 result precision: uint4x32
Uniform result precision: single
Retrieving commandline, environment, or config file variable ocannl_backend
Found multicore_cc, in the config file
Retrieving commandline, environment, or config file variable ocannl_cd_ident_style
Not found, using default heuristic
Retrieving commandline, environment, or config file variable ocannl_ll_ident_style
Not found, using default heuristic
Retrieving commandline, environment, or config file variable ocannl_output_prec_in_ll_files
Not found, using default false
Retrieving commandline, environment, or config file variable ocannl_prefer_backend_uniformity
Found true, in the config file
Retrieving commandline, environment, or config file variable ocannl_debug_log_to_stream_files
Not found, using default false
Retrieving commandline, environment, or config file variable ocannl_cc_backend_optimization_level
Not found, using default 3
Retrieving commandline, environment, or config file variable ocannl_cc_backend_compiler_command
Not found, using default gcc
Retrieving commandline, environment, or config file variable ocannl_cc_backend_verify_codesign
Not found, using default false
Compilation successful!
Actual tensor precision in context: uint4x32
(cd _build/default/test/operations && ./top_down_prec.exe --ocannl_output_prec_in_ll_files=true --ocannl_output_debug_files_in_build_directory=true --ocannl_clean_up_artifacts_on_startup=false)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
                      #8 *._d
                       8.00
                      #9 grad_*._d Virt/30
                      <void>
             #6 + Virt/152                 │#4 c non-emb
             <void>                        │ 2.00
             #7 grad_+ Virt/30             │#5 grad_c Local/26030
             <void>                        │<void>
#0 a non-emb         │#2 b non-emb         │
 2.00                │ 2.00                │
#1 grad_a Local/26030│#3 grad_b Local/26030│
<void>               │<void>               │
File "test/operations/dune", lines 76-91, characters 0-458:
76 | (rule
77 |  (alias runtest)
78 |  (target
....
89 |     "--ocannl_output_prec_in_ll_files=true"
90 |     "--ocannl_output_debug_files_in_build_directory=true"
91 |     "--ocannl_clean_up_artifacts_on_startup=false"))))
Error: This rule defines a directory target "test/operations/build_files"
that matches the requested path
"test/operations/build_files/n3_fwd-unoptimized.ll" but the rule's action
didn't produce it
-> required by
   _build/default/test/operations/n3_fwd_with_prec-unoptimized.ll.actual
-> required by alias test/operations/runtest in test/operations/dune:101
(cd _build/default/test/ppx && ./test_ppx_op.exe)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/default/test/ppx && ./test_ppx_op_expected.exe)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/5ae0676ef9036d66136d3c4e9559bb40/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition 'Retrieving commandline, environment, or config file variable ocannl_log_level' -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/5ae0676ef9036d66136d3c4e9559bb40/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition 'Found 0, in the config file' -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/5ae0676ef9036d66136d3c4e9559bb40/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition test_threefry4x32.ml -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/default/test/operations && ./micrograd_demo_logging.exe --ocannl_debug_backend=text --ocannl_log_file_stem=micrograd_demo_logging --ocannl_log_main_domain_to_stdout=false --ocannl_debug_log_to_stream_files=true)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
Retrieving commandline, environment, or config file variable ocannl_backend
Found multicore_cc, in the config file
Retrieving commandline, environment, or config file variable ocannl_never_capture_stdout
Not found, using default false
Retrieving commandline, environment, or config file variable ocannl_cd_ident_style
Not found, using default heuristic
Retrieving commandline, environment, or config file variable ocannl_ll_ident_style
Not found, using default heuristic
Retrieving commandline, environment, or config file variable ocannl_output_prec_in_ll_files
Not found, using default false
Retrieving commandline, environment, or config file variable ocannl_prefer_backend_uniformity
Found true, in the config file
Retrieving commandline, environment, or config file variable ocannl_debug_log_to_stream_files
Found true, commandline --ocannl_debug_log_to_stream_files=true
Retrieving commandline, environment, or config file variable ocannl_cc_backend_optimization_level
Not found, using default 3
Retrieving commandline, environment, or config file variable ocannl_cc_backend_compiler_command
Not found, using default gcc
Retrieving commandline, environment, or config file variable ocannl_cc_backend_verify_codesign
Not found, using default false
HERE: test/operations/micrograd_demo_logging.ml:31:21
┌────────────────────┐
│[75]: +_g shape 0:1 │
│┌┬─────────┐        │
│││axis 0   │        │
│├┼─────────┤        │
│││ 2.47e+1 │        │
│└┴─────────┘        │
└────────────────────┘
HERE: test/operations/micrograd_demo_logging.ml:32:21
┌─────────────────┐
│[0]: a shape 0:1 │
│┌┬───────┐       │
│││axis 0 │       │
│├┼───────┤       │
│││ -4.00 │       │
│└┴───────┘       │
└─────────────────┘
┌────────────────────────┐
│[0]: a shape 0:1  grad_a│
│┌┬─────────┐            │
│││axis 0   │            │
│├┼─────────┤            │
│││ 1.38e+2 │            │
│└┴─────────┘            │
└────────────────────────┘
HERE: test/operations/micrograd_demo_logging.ml:33:21
┌─────────────────┐
│[2]: b shape 0:1 │
│┌┬──────┐        │
│││axis 0│        │
│├┼──────┤        │
│││ 2.00 │        │
│└┴──────┘        │
└─────────────────┘
┌────────────────────────┐
│[2]: b shape 0:1  grad_b│
│┌┬─────────┐            │
│││axis 0   │            │
│├┼─────────┤            │
│││ 6.45e+2 │            │
│└┴─────────┘            │
└────────────────────────┘
File "test/einsum/moons_demo_variant.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/einsum/moons_demo_variant.expected _build/default/test/einsum/moons_demo_variant.exe.output
diff --git a/_build/default/test/einsum/moons_demo_variant.expected b/_build/default/test/einsum/moons_demo_variant.exe.output
index 5d75587..b653968 100644
--- a/_build/default/test/einsum/moons_demo_variant.expected
+++ b/_build/default/test/einsum/moons_demo_variant.exe.output
@@ -42,11 +42,13 @@ n41 grad_relu_margin_loss as relu_margin_loss.grad: Local/1046; single prec 10x1
 n42 10 as _10: Virt/40; single prec 1; mem in bytes: <not-in-yet>
 n43 => as n43: Local/1046; single prec 1; mem in bytes: <not-in-yet>
 n44 grad_=> as n43.grad: Virt/40; single prec 1; mem in bytes: <not-in-yet>
+n45 /._scalar_loss as scalar_loss: Host&stream/412410; single prec 1; mem in bytes: <not-in-yet>
 n46 grad_/._scalar_loss as scalar_loss.grad: Virt/40; single prec 1; mem in bytes: <not-in-yet>
 n47 2 as _2: Virt/40; single prec 1; mem in bytes: <not-in-yet>
 n48 **. as n48: Virt/40; single prec 1; mem in bytes: <not-in-yet>
 n49 -1 as n49: Virt/40; single prec 1; mem in bytes: <not-in-yet>
 n50 *. as n50: Virt/152; single prec 1; mem in bytes: <not-in-yet>
+n51 /. as n51: Host&stream/412410; single prec 1; mem in bytes: <not-in-yet>
 n52 1 as _1: Virt/40; single prec 1; mem in bytes: <not-in-yet>
 n53 200 as _200: Virt/40; single prec 1; mem in bytes: <not-in-yet>
 n54 !@ as n54: Virt/152; single prec 1; mem in bytes: <not-in-yet>
@@ -56,6 +58,7 @@ n57 *. as n57: Virt/40; single prec 1; mem in bytes: <not-in-yet>
 n58 - as n58: Virt/152; single prec 1; mem in bytes: <not-in-yet>
 n59 0.1 as n59: Virt/40; single prec 1; mem in bytes: <not-in-yet>
 n60 *. as n60: Virt/152; single prec 1; mem in bytes: <not-in-yet>
+n61 /._learning_rate as learning_rate: Host&stream/412410; single prec 1; mem in bytes: <not-in-yet>
 n62 sgd_delta_b1 as sgd_delta_b1: Virt/15; single prec 16; mem in bytes: <not-in-yet>
 n63 sgd_momentum_b1 as sgd_momentum_b1: unknown; single prec <not-in-yet>; mem in bytes: <not-in-yet>
 n64 0.0001 as n64: Virt/40; single prec 1; mem in bytes: <not-in-yet>
(cd _build/.sandbox/5ae0676ef9036d66136d3c4e9559bb40/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition zero2hero_1of7.ml -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/einsum/einsum_trivia_exec.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/einsum/einsum_trivia_exec.expected _build/default/test/einsum/einsum_trivia_exec.exe.output
diff --git a/_build/default/test/einsum/einsum_trivia_exec.expected b/_build/default/test/einsum/einsum_trivia_exec.exe.output
index 7b623db..eff0d7b 100644
--- a/_build/default/test/einsum/einsum_trivia_exec.expected
+++ b/_build/default/test/einsum/einsum_trivia_exec.exe.output
@@ -657,159 +657,159 @@ HERE: test/einsum/einsum_trivia_exec.ml:229:21
 │└──────┴────────────────────────────────────┘│
 └─────────────────────────────────────────────┘
 HERE: test/einsum/einsum_trivia_exec.ml:254:21
-┌────────────────────────────────┐
-│[9]: ;=>+ shape 0:4,1:5,2:6,3:3 │
-│┌──────┬──────────────────┐     │
-││0 @ 0 │axis 3            │     │
-│├──────┼──────────────────┤     │
-││0 @ 1 │ 0.00  0.00  0.00 │     │
-││axis 2│ 0.00  0.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 0.00  0.00  4.00 │     │
-││      │ 0.00  0.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││1 @ 1 │ 0.00  1.00  0.00 │     │
-││axis 2│ 0.00  1.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 0.00  1.00  4.00 │     │
-││      │ 0.00  1.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││2 @ 1 │ 0.00  2.00  0.00 │     │
-││axis 2│ 0.00  2.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 0.00  2.00  4.00 │     │
-││      │ 0.00  2.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││3 @ 1 │ 0.00  3.00  0.00 │     │
-││axis 2│ 0.00  3.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 0.00  3.00  4.00 │     │
-││      │ 0.00  3.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││4 @ 1 │ 0.00  4.00  0.00 │     │
-││axis 2│ 0.00  4.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 0.00  4.00  4.00 │     │
-││      │ 0.00  4.00  5.00 │     │
-│└──────┴──────────────────┘     │
-├────────────────────────────────┤
-│┌──────┬──────────────────┐     │
-││1 @ 0 │axis 3            │     │
-│├──────┼──────────────────┤     │
-││0 @ 1 │ 1.00  0.00  0.00 │     │
-││axis 2│ 1.00  0.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 1.00  0.00  4.00 │     │
-││      │ 1.00  0.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││1 @ 1 │ 1.00  1.00  0.00 │     │
-││axis 2│ 1.00  1.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 1.00  1.00  4.00 │     │
-││      │ 1.00  1.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││2 @ 1 │ 1.00  2.00  0.00 │     │
-││axis 2│ 1.00  2.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 1.00  2.00  4.00 │     │
-││      │ 1.00  2.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││3 @ 1 │ 1.00  3.00  0.00 │     │
-││axis 2│ 1.00  3.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 1.00  3.00  4.00 │     │
-││      │ 1.00  3.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││4 @ 1 │ 1.00  4.00  0.00 │     │
-││axis 2│ 1.00  4.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 1.00  4.00  4.00 │     │
-││      │ 1.00  4.00  5.00 │     │
-│└──────┴──────────────────┘     │
-├────────────────────────────────┤
-│┌──────┬──────────────────┐     │
-││2 @ 0 │axis 3            │     │
-│├──────┼──────────────────┤     │
-││0 @ 1 │ 2.00  0.00  0.00 │     │
-││axis 2│ 2.00  0.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 2.00  0.00  4.00 │     │
-││      │ 2.00  0.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││1 @ 1 │ 2.00  1.00  0.00 │     │
-││axis 2│ 2.00  1.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 2.00  1.00  4.00 │     │
-││      │ 2.00  1.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││2 @ 1 │ 2.00  2.00  0.00 │     │
-││axis 2│ 2.00  2.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 2.00  2.00  4.00 │     │
-││      │ 2.00  2.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││3 @ 1 │ 2.00  3.00  0.00 │     │
-││axis 2│ 2.00  3.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 2.00  3.00  4.00 │     │
-││      │ 2.00  3.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││4 @ 1 │ 2.00  4.00  0.00 │     │
-││axis 2│ 2.00  4.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 2.00  4.00  4.00 │     │
-││      │ 2.00  4.00  5.00 │     │
-│└──────┴──────────────────┘     │
-├────────────────────────────────┤
-│┌──────┬──────────────────┐     │
-││3 @ 0 │axis 3            │     │
-│├──────┼──────────────────┤     │
-││0 @ 1 │ 3.00  0.00  0.00 │     │
-││axis 2│ 3.00  0.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 3.00  0.00  4.00 │     │
-││      │ 3.00  0.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││1 @ 1 │ 3.00  1.00  0.00 │     │
-││axis 2│ 3.00  1.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 3.00  1.00  4.00 │     │
-││      │ 3.00  1.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││2 @ 1 │ 3.00  2.00  0.00 │     │
-││axis 2│ 3.00  2.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 3.00  2.00  4.00 │     │
-││      │ 3.00  2.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││3 @ 1 │ 3.00  3.00  0.00 │     │
-││axis 2│ 3.00  3.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 3.00  3.00  4.00 │     │
-││      │ 3.00  3.00  5.00 │     │
-│├──────┼──────────────────┤     │
-││4 @ 1 │ 3.00  4.00  0.00 │     │
-││axis 2│ 3.00  4.00  1.00 │     │
-││      │ ...   ...   ...  │     │
-││      │ 3.00  4.00  4.00 │     │
-││      │ 3.00  4.00  5.00 │     │
-│└──────┴──────────────────┘     │
-└────────────────────────────────┘
+┌────────────────────────────────────┐
+│[9]: ;=>+ shape 0:4,1:5,2:6,3:3     │
+│┌──────┬───────────────────────────┐│
+││0 @ 0 │axis 3                     ││
+│├──────┼───────────────────────────┤│
+││0 @ 1 │ -5.25e+28  3.11e-41  0.00 ││
+││axis 2│ 0.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 9.49e-39   4.16e-11  4.00 ││
+││      │ 0.00       1.12e-43  5.00 ││
+│├──────┼───────────────────────────┤│
+││1 @ 1 │ -5.25e+28  1.00      0.00 ││
+││axis 2│ 0.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 9.49e-39   1.00      4.00 ││
+││      │ 0.00       1.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││2 @ 1 │ -5.25e+28  2.00      0.00 ││
+││axis 2│ 0.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 9.49e-39   2.00      4.00 ││
+││      │ 0.00       2.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││3 @ 1 │ -5.25e+28  3.00      0.00 ││
+││axis 2│ 0.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 9.49e-39   3.00      4.00 ││
+││      │ 0.00       3.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││4 @ 1 │ -5.25e+28  4.00      0.00 ││
+││axis 2│ 0.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 9.49e-39   4.00      4.00 ││
+││      │ 0.00       4.00      5.00 ││
+│└──────┴───────────────────────────┘│
+├────────────────────────────────────┤
+│┌──────┬───────────────────────────┐│
+││1 @ 0 │axis 3                     ││
+│├──────┼───────────────────────────┤│
+││0 @ 1 │ -5.25e+28  3.11e-41  0.00 ││
+││axis 2│ 1.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 1.00       4.16e-11  4.00 ││
+││      │ 1.00       1.12e-43  5.00 ││
+│├──────┼───────────────────────────┤│
+││1 @ 1 │ -5.25e+28  1.00      0.00 ││
+││axis 2│ 1.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 1.00       1.00      4.00 ││
+││      │ 1.00       1.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││2 @ 1 │ -5.25e+28  2.00      0.00 ││
+││axis 2│ 1.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 1.00       2.00      4.00 ││
+││      │ 1.00       2.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││3 @ 1 │ -5.25e+28  3.00      0.00 ││
+││axis 2│ 1.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 1.00       3.00      4.00 ││
+││      │ 1.00       3.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││4 @ 1 │ -5.25e+28  4.00      0.00 ││
+││axis 2│ 1.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 1.00       4.00      4.00 ││
+││      │ 1.00       4.00      5.00 ││
+│└──────┴───────────────────────────┘│
+├────────────────────────────────────┤
+│┌──────┬───────────────────────────┐│
+││2 @ 0 │axis 3                     ││
+│├──────┼───────────────────────────┤│
+││0 @ 1 │ -5.25e+28  3.11e-41  0.00 ││
+││axis 2│ 2.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 2.00       4.16e-11  4.00 ││
+││      │ 2.00       1.12e-43  5.00 ││
+│├──────┼───────────────────────────┤│
+││1 @ 1 │ -5.25e+28  1.00      0.00 ││
+││axis 2│ 2.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 2.00       1.00      4.00 ││
+││      │ 2.00       1.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││2 @ 1 │ -5.25e+28  2.00      0.00 ││
+││axis 2│ 2.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 2.00       2.00      4.00 ││
+││      │ 2.00       2.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││3 @ 1 │ -5.25e+28  3.00      0.00 ││
+││axis 2│ 2.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 2.00       3.00      4.00 ││
+││      │ 2.00       3.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││4 @ 1 │ -5.25e+28  4.00      0.00 ││
+││axis 2│ 2.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 2.00       4.00      4.00 ││
+││      │ 2.00       4.00      5.00 ││
+│└──────┴───────────────────────────┘│
+├────────────────────────────────────┤
+│┌──────┬───────────────────────────┐│
+││3 @ 0 │axis 3                     ││
+│├──────┼───────────────────────────┤│
+││0 @ 1 │ -5.25e+28  3.11e-41  0.00 ││
+││axis 2│ 3.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 3.00       4.16e-11  4.00 ││
+││      │ 3.00       1.12e-43  5.00 ││
+│├──────┼───────────────────────────┤│
+││1 @ 1 │ -5.25e+28  1.00      0.00 ││
+││axis 2│ 3.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 3.00       1.00      4.00 ││
+││      │ 3.00       1.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││2 @ 1 │ -5.25e+28  2.00      0.00 ││
+││axis 2│ 3.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 3.00       2.00      4.00 ││
+││      │ 3.00       2.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││3 @ 1 │ -5.25e+28  3.00      0.00 ││
+││axis 2│ 3.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 3.00       3.00      4.00 ││
+││      │ 3.00       3.00      5.00 ││
+│├──────┼───────────────────────────┤│
+││4 @ 1 │ -5.25e+28  4.00      0.00 ││
+││axis 2│ 3.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 3.00       4.00      4.00 ││
+││      │ 3.00       4.00      5.00 ││
+│└──────┴───────────────────────────┘│
+└────────────────────────────────────┘
 HERE: test/einsum/einsum_trivia_exec.ml:255:21
 [1]: =>_ti shape 0:4,1:3  <not-hosted>
 HERE: test/einsum/einsum_trivia_exec.ml:256:21
-┌───────────────────────────┐
-│[7]: =>_tk shape 0:6,1:3   │
-│┌──────┬──────────────────┐│
-││      │axis 1            ││
-│├──────┼──────────────────┤│
-││axis 0│ 0.00  0.00  0.00 ││
-││      │ 0.00  0.00  1.00 ││
-││      │ ...   ...   ...  ││
-││      │ 0.00  0.00  4.00 ││
-││      │ 0.00  0.00  5.00 ││
-│└──────┴──────────────────┘│
-└───────────────────────────┘
+┌────────────────────────────────────┐
+│[7]: =>_tk shape 0:6,1:3            │
+│┌──────┬───────────────────────────┐│
+││      │axis 1                     ││
+│├──────┼───────────────────────────┤│
+││axis 0│ -5.25e+28  3.11e-41  0.00 ││
+││      │ 0.00       2.89e+32  1.00 ││
+││      │ ...        ...       ...  ││
+││      │ 9.49e-39   4.16e-11  4.00 ││
+││      │ 0.00       1.12e-43  5.00 ││
+│└──────┴───────────────────────────┘│
+└────────────────────────────────────┘
 HERE: test/einsum/einsum_trivia_exec.ml:278:21
 ┌─────────────────────────────────────────────────────────────────┐
 │[2]: ;=>_c shape 0:3|1:4,2:2                                     │
(cd _build/.sandbox/5ae0676ef9036d66136d3c4e9559bb40/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition primitive_ops.ml -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
(cd _build/.sandbox/dd1b47d5b5fa95ee4f9ff4885e4632e7/default/test/einsum && .einsum_tutorials.inline-tests/inline-test-runner.exe inline-test-runner einsum_tutorials -partition einsum_trivia.ml -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/einsum/einsum_trivia.ml", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/einsum/einsum_trivia.ml _build/.sandbox/dd1b47d5b5fa95ee4f9ff4885e4632e7/default/test/einsum/einsum_trivia.ml.corrected
diff --git a/_build/default/test/einsum/einsum_trivia.ml b/_build/.sandbox/dd1b47d5b5fa95ee4f9ff4885e4632e7/default/test/einsum/einsum_trivia.ml.corrected
index 2bcae70..e3eef3d 100644
--- a/_build/default/test/einsum/einsum_trivia.ml
+++ b/_build/.sandbox/dd1b47d5b5fa95ee4f9ff4885e4632e7/default/test/einsum/einsum_trivia.ml.corrected
@@ -976,144 +976,144 @@ let%expect_test "outer_sum simulating axis concatenation" =
   [%expect
     {|
     HERE: test/einsum/einsum_trivia.ml:975:21
-    ┌────────────────────────────────┐
-    │[9]: ;=>+ shape 0:4,1:5,2:6,3:3 │
-    │┌──────┬──────────────────┐     │
-    ││0 @ 0 │axis 3            │     │
-    │├──────┼──────────────────┤     │
-    ││0 @ 1 │ 0.00  0.00  0.00 │     │
-    ││axis 2│ 0.00  0.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 0.00  0.00  4.00 │     │
-    ││      │ 0.00  0.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││1 @ 1 │ 0.00  1.00  0.00 │     │
-    ││axis 2│ 0.00  1.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 0.00  1.00  4.00 │     │
-    ││      │ 0.00  1.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││2 @ 1 │ 0.00  2.00  0.00 │     │
-    ││axis 2│ 0.00  2.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 0.00  2.00  4.00 │     │
-    ││      │ 0.00  2.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││3 @ 1 │ 0.00  3.00  0.00 │     │
-    ││axis 2│ 0.00  3.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 0.00  3.00  4.00 │     │
-    ││      │ 0.00  3.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││4 @ 1 │ 0.00  4.00  0.00 │     │
-    ││axis 2│ 0.00  4.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 0.00  4.00  4.00 │     │
-    ││      │ 0.00  4.00  5.00 │     │
-    │└──────┴──────────────────┘     │
-    ├────────────────────────────────┤
-    │┌──────┬──────────────────┐     │
-    ││1 @ 0 │axis 3            │     │
-    │├──────┼──────────────────┤     │
-    ││0 @ 1 │ 1.00  0.00  0.00 │     │
-    ││axis 2│ 1.00  0.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 1.00  0.00  4.00 │     │
-    ││      │ 1.00  0.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││1 @ 1 │ 1.00  1.00  0.00 │     │
-    ││axis 2│ 1.00  1.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 1.00  1.00  4.00 │     │
-    ││      │ 1.00  1.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││2 @ 1 │ 1.00  2.00  0.00 │     │
-    ││axis 2│ 1.00  2.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 1.00  2.00  4.00 │     │
-    ││      │ 1.00  2.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││3 @ 1 │ 1.00  3.00  0.00 │     │
-    ││axis 2│ 1.00  3.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 1.00  3.00  4.00 │     │
-    ││      │ 1.00  3.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││4 @ 1 │ 1.00  4.00  0.00 │     │
-    ││axis 2│ 1.00  4.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 1.00  4.00  4.00 │     │
-    ││      │ 1.00  4.00  5.00 │     │
-    │└──────┴──────────────────┘     │
-    ├────────────────────────────────┤
-    │┌──────┬──────────────────┐     │
-    ││2 @ 0 │axis 3            │     │
-    │├──────┼──────────────────┤     │
-    ││0 @ 1 │ 2.00  0.00  0.00 │     │
-    ││axis 2│ 2.00  0.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 2.00  0.00  4.00 │     │
-    ││      │ 2.00  0.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││1 @ 1 │ 2.00  1.00  0.00 │     │
-    ││axis 2│ 2.00  1.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 2.00  1.00  4.00 │     │
-    ││      │ 2.00  1.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││2 @ 1 │ 2.00  2.00  0.00 │     │
-    ││axis 2│ 2.00  2.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 2.00  2.00  4.00 │     │
-    ││      │ 2.00  2.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││3 @ 1 │ 2.00  3.00  0.00 │     │
-    ││axis 2│ 2.00  3.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 2.00  3.00  4.00 │     │
-    ││      │ 2.00  3.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││4 @ 1 │ 2.00  4.00  0.00 │     │
-    ││axis 2│ 2.00  4.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 2.00  4.00  4.00 │     │
-    ││      │ 2.00  4.00  5.00 │     │
-    │└──────┴──────────────────┘     │
-    ├────────────────────────────────┤
-    │┌──────┬──────────────────┐     │
-    ││3 @ 0 │axis 3            │     │
-    │├──────┼──────────────────┤     │
-    ││0 @ 1 │ 3.00  0.00  0.00 │     │
-    ││axis 2│ 3.00  0.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 3.00  0.00  4.00 │     │
-    ││      │ 3.00  0.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││1 @ 1 │ 3.00  1.00  0.00 │     │
-    ││axis 2│ 3.00  1.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 3.00  1.00  4.00 │     │
-    ││      │ 3.00  1.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││2 @ 1 │ 3.00  2.00  0.00 │     │
-    ││axis 2│ 3.00  2.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 3.00  2.00  4.00 │     │
-    ││      │ 3.00  2.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││3 @ 1 │ 3.00  3.00  0.00 │     │
-    ││axis 2│ 3.00  3.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 3.00  3.00  4.00 │     │
-    ││      │ 3.00  3.00  5.00 │     │
-    │├──────┼──────────────────┤     │
-    ││4 @ 1 │ 3.00  4.00  0.00 │     │
-    ││axis 2│ 3.00  4.00  1.00 │     │
-    ││      │ ...   ...   ...  │     │
-    ││      │ 3.00  4.00  4.00 │     │
-    ││      │ 3.00  4.00  5.00 │     │
-    │└──────┴──────────────────┘     │
-    └────────────────────────────────┘
+    ┌────────────────────────────────────┐
+    │[9]: ;=>+ shape 0:4,1:5,2:6,3:3     │
+    │┌──────┬───────────────────────────┐│
+    ││0 @ 0 │axis 3                     ││
+    │├──────┼───────────────────────────┤│
+    ││0 @ 1 │ 6.36e-13  3.38e-41   0.00 ││
+    ││axis 2│ 0.00      -1.90e-6   1.00 ││
+    ││      │ ...       ...        ...  ││
+    ││      │ 4.68e+3   5.12e+3    4.00 ││
+    ││      │ 4.17e-41  -1.17e+33  5.00 ││
+    │├──────┼───────────────────────────┤│
+    ││1 @ 1 │ 6.36e-13  1.00       0.00 ││
+    ││axis 2│ 0.00      9.99e-1    1.00 ││
+    ││      │ ...       ...        ...  ││
+    ││      │ 4.68e+3   5.12e+3    4.00 ││
+    ││      │ 4.17e-41  -1.17e+33  5.00 ││
+    │├──────┼───────────────────────────┤│
+    ││2 @ 1 │ 6.36e-13  2.00       0.00 ││
+    ││axis 2│ 0.00      2.00       1.00 ││
+    ││      │ ...       ...        ...  ││
+    ││      │ 4.68e+3   5.12e+3    4.00 ││
+    ││      │ 4.17e-41  -1.17e+33  5.00 ││
+    │├──────┼───────────────────────────┤│
+    ││3 @ 1 │ 6.36e-13  3.00       0.00 ││
+    ││axis 2│ 0.00      3.00       1.00 ││
+    ││      │ ...       ...        ...  ││
+    ││      │ 4.68e+3   5.12e+3    4.00 ││
+    ││      │ 4.17e-41  -1.17e+33  5.00 ││
+    │├──────┼───────────────────────────┤│
+    ││4 @ 1 │ 6.36e-13  4.00       0.00 ││
+    ││axis 2│ 0.00      4.00       1.00 ││
+    ││      │ ...       ...        ...  ││
+    ││      │ 4.68e+3   5.12e+3    4.00 ││
+    ││      │ 4.17e-41  -1.17e+33  5.00 ││
+    │└──────┴───────────────────────────┘│
+    ├────────────────────────────────────┤
+    │┌──────┬──────────────────────────┐ │
+    ││1 @ 0 │axis 3                    │ │
+    │├──────┼──────────────────────────┤ │
+    ││0 @ 1 │ 1.00     3.38e-41   0.00 │ │
+    ││axis 2│ 1.00     -1.90e-6   1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 1.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││1 @ 1 │ 1.00     1.00       0.00 │ │
+    ││axis 2│ 1.00     9.99e-1    1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 1.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││2 @ 1 │ 1.00     2.00       0.00 │ │
+    ││axis 2│ 1.00     2.00       1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 1.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││3 @ 1 │ 1.00     3.00       0.00 │ │
+    ││axis 2│ 1.00     3.00       1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 1.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││4 @ 1 │ 1.00     4.00       0.00 │ │
+    ││axis 2│ 1.00     4.00       1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 1.00     -1.17e+33  5.00 │ │
+    │└──────┴──────────────────────────┘ │
+    ├────────────────────────────────────┤
+    │┌──────┬──────────────────────────┐ │
+    ││2 @ 0 │axis 3                    │ │
+    │├──────┼──────────────────────────┤ │
+    ││0 @ 1 │ 2.00     3.38e-41   0.00 │ │
+    ││axis 2│ 2.00     -1.90e-6   1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 2.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││1 @ 1 │ 2.00     1.00       0.00 │ │
+    ││axis 2│ 2.00     9.99e-1    1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 2.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││2 @ 1 │ 2.00     2.00       0.00 │ │
+    ││axis 2│ 2.00     2.00       1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 2.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││3 @ 1 │ 2.00     3.00       0.00 │ │
+    ││axis 2│ 2.00     3.00       1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 2.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││4 @ 1 │ 2.00     4.00       0.00 │ │
+    ││axis 2│ 2.00     4.00       1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 2.00     -1.17e+33  5.00 │ │
+    │└──────┴──────────────────────────┘ │
+    ├────────────────────────────────────┤
+    │┌──────┬──────────────────────────┐ │
+    ││3 @ 0 │axis 3                    │ │
+    │├──────┼──────────────────────────┤ │
+    ││0 @ 1 │ 3.00     3.38e-41   0.00 │ │
+    ││axis 2│ 3.00     -1.90e-6   1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 3.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││1 @ 1 │ 3.00     1.00       0.00 │ │
+    ││axis 2│ 3.00     9.99e-1    1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 3.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││2 @ 1 │ 3.00     2.00       0.00 │ │
+    ││axis 2│ 3.00     2.00       1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 3.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││3 @ 1 │ 3.00     3.00       0.00 │ │
+    ││axis 2│ 3.00     3.00       1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 3.00     -1.17e+33  5.00 │ │
+    │├──────┼──────────────────────────┤ │
+    ││4 @ 1 │ 3.00     4.00       0.00 │ │
+    ││axis 2│ 3.00     4.00       1.00 │ │
+    ││      │ ...      ...        ...  │ │
+    ││      │ 4.68e+3  5.12e+3    4.00 │ │
+    ││      │ 3.00     -1.17e+33  5.00 │ │
+    │└──────┴──────────────────────────┘ │
+    └────────────────────────────────────┘
     |}];
   Train.printf ~here:[%here] ~with_code:false ~with_grad:false ti;
   [%expect
@@ -1125,18 +1125,18 @@ let%expect_test "outer_sum simulating axis concatenation" =
   [%expect
     {|
     HERE: test/einsum/einsum_trivia.ml:1124:21
-    ┌───────────────────────────┐
-    │[7]: =>_tk shape 0:6,1:3   │
-    │┌──────┬──────────────────┐│
-    ││      │axis 1            ││
-    │├──────┼──────────────────┤│
-    ││axis 0│ 0.00  0.00  0.00 ││
-    ││      │ 0.00  0.00  1.00 ││
-    ││      │ ...   ...   ...  ││
-    ││      │ 0.00  0.00  4.00 ││
-    ││      │ 0.00  0.00  5.00 ││
-    │└──────┴──────────────────┘│
-    └───────────────────────────┘
+    ┌────────────────────────────────────┐
+    │[7]: =>_tk shape 0:6,1:3            │
+    │┌──────┬───────────────────────────┐│
+    ││      │axis 1                     ││
+    │├──────┼───────────────────────────┤│
+    ││axis 0│ 6.36e-13  3.38e-41   0.00 ││
+    ││      │ 0.00      -1.90e-6   1.00 ││
+    ││      │ ...       ...        ...  ││
+    ││      │ 4.68e+3   5.12e+3    4.00 ││
+    ││      │ 4.17e-41  -1.17e+33  5.00 ││
+    │└──────┴───────────────────────────┘│
+    └────────────────────────────────────┘
     |}]
 
 let%expect_test "einsum with a leftmost input axis preserved as output axis" =
(cd _build/.sandbox/5ae0676ef9036d66136d3c4e9559bb40/default/test/operations && .operations_tutorials.inline-tests/inline-test-runner.exe inline-test-runner operations_tutorials -partition hello_world_op.ml -source-tree-root ../.. -diff-cmd -)
Retrieving commandline, environment, or config file variable ocannl_log_level
Found 0, in the config file
File "test/operations/zero2hero_1of7.ml", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/operations/zero2hero_1of7.ml _build/.sandbox/5ae0676ef9036d66136d3c4e9559bb40/default/test/operations/zero2hero_1of7.ml.corrected
diff --git a/_build/default/test/operations/zero2hero_1of7.ml b/_build/.sandbox/5ae0676ef9036d66136d3c4e9559bb40/default/test/operations/zero2hero_1of7.ml.corrected
index 5caa1d9..c96815d 100644
--- a/_build/default/test/operations/zero2hero_1of7.ml
+++ b/_build/.sandbox/5ae0676ef9036d66136d3c4e9559bb40/default/test/operations/zero2hero_1of7.ml.corrected
@@ -273,21 +273,21 @@ let%expect_test "Simple gradients hosted" =
   [%expect
     {|
                        #12 *._l
-                        0.00
+                        -3.11e-37
                        #13 grad_*._l
-                        0.00
+                        -3.11e-37
                  #8 +_d                   │#10 f non-emb
-                  0.00                    │ -2.00
+                  -3.11e-37               │ -2.00
                  #9 grad_+_d              │#11 grad_f
-                  0.00                    │ 0.00
+                  -3.11e-37               │ -3.11e-37
           #4 *._e            │#6 c non-emb│
-           0.00              │ 1.00e+1    │
+           -3.11e-37         │ 1.00e+1    │
           #5 grad_*._e       │#7 grad_c   │
-           0.00              │ 0.00       │
+           -3.11e-37         │ 7.40e+24   │
     #0 a non-emb│#2 b non-emb│            │
      2.00       │ -3.00      │            │
     #1 grad_a   │#3 grad_b   │            │
-     0.00       │ 0.00       │            │
+     1.31e-14   │ 7.40e+24   │            │
     |}];
   (* Do not update the params: all values and gradients will be at initial points, which are
      specified in the tensor in the brackets. *)
@@ -403,21 +403,21 @@ let%expect_test "Simple gradients virtual" =
   [%expect
     {|
                    #12 *._l
-                    0.00
+                    -3.11e-37
                    #13 grad_*._l Virt/40
                    <void>
              #8 +_d Local/1046            │#10 f non-emb
              <void>                       │ -2.00
              #9 grad_+_d Virt/40          │#11 grad_f
-             <void>                       │ 0.00
+             <void>                       │ -3.11e-37
       #4 *._e Virt/152       │#6 c non-emb│
       <void>                 │ 1.00e+1    │
       #5 grad_*._e Virt/40   │#7 grad_c   │
-      <void>                 │ 0.00       │
+      <void>                 │ -3.11e-37  │
     #0 a non-emb│#2 b non-emb│            │
      2.00       │ -3.00      │            │
     #1 grad_a   │#3 grad_b   │            │
-     0.00       │ 0.00       │            │
+     1.29e-14   │ 7.40e+24   │            │
     |}];
   (* Do not update the params: all values and gradients will be at initial points, which are
      specified in the tensor in the brackets. *)
File "test/training/moons_demo_mini.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/training/moons_demo_mini.expected _build/default/test/training/moons_demo_mini.exe.output
diff --git a/_build/default/test/training/moons_demo_mini.expected b/_build/default/test/training/moons_demo_mini.exe.output
index 8e540ca..3a256fe 100644
--- a/_build/default/test/training/moons_demo_mini.expected
+++ b/_build/default/test/training/moons_demo_mini.exe.output
@@ -4,17 +4,17 @@ Half-moons scatterplot and decision boundary:
 ┌─────────────────────────┐
 │********#****************│
 │***##########************│
-│**#############********..│
-│*###****%***####**.....%.│
-│###****%%****.##......%%%│
+│**#############******....│
+│*###****%***####.......%.│
+│###****%%.....##......%%%│
 │##*****%%%....###.....%%.│
 │##***...%%%....##....%%%.│
-│#***....%%%%...##...%%%..│
+│#**.....%%%%...##...%%%..│
 │*........%%%%%%%%%%%%%...│
 │...........%%%%%%%%%%....│
 └─────────────────────────┘Loss:
 ┌─────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ 2.68│-                                                                                                   │
+│ 3.25│-                                                                                                   │
 │     │                                                                                                    │
 │     │                                                                                                    │
 │     │                                                                                                    │
@@ -33,72 +33,72 @@ Half-moons scatterplot and decision boundary:
 │     │                                                                                                    │
 │     │                                                                                                    │
 │l    │                                                                                                    │
-│o    │                                                                                                    │
+│o    │  -                                                 
+│s    │                                                                                                    │
 │s    │                                                                                                    │
-│s    │  -                                                                                                 │
 │     │                                                                                                    │
 │     │                                                                                                    │
 │     │                                                                                                    │
 │     │                                                                                                    │
+│     │   -                                                                                                │
 │     │                                                                                                    │
 │     │                                                                                                    │
-│     │   -                                                                                                │
-│     │     -                                                                                              │
 │     │                                                                                                    │
-│     │       -    -                                                                                       │
 │     │                                                                                                    │
-│     │      -         -                                                                                   │
-│     │               -    -                                                                               │
-│     │        -  -           -                                                                            │
-│     │          -       -   -            --                                                               │
-│     │             -                                                                                      │
-│     │                                 -             -     -                            -    -            │
-│ 0.00│                 -   -   ---- ---    -- ---- -- - ---  ---- ---- ---- ---- ---- -- - -- - ---- ---- │
+│     │     -                                                                                              │
+│     │        -                                                                                           │
+│     │            -                                                                                       │
+│     │                -                                                                                   │
+│     │       -       -  - -  -                                                                            │
+│     │      -    -          -          -  -                                                               │
+│     │                           -       -                                                                │
+│     │          -  -   -   -          -       --   -           -                                          │
+│ 0.00│                         -- - --     --   --  --- ---- -- - ---- ---- ---- ---- ---- ---- ---- ---- │
 ├─────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
 │     │0.00                                                                                         7.90e+1│
 │     │                                                step                                                │
 └─────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘Log-loss, for better visibility:
 ┌─────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ 9.87e-1 │-                                                                                                   │
+│ 1.17    │-                                                                                                   │
 │         │                                                                                                    │
 │         │ -                                                                                                  │
 │         │  -                                                                                                 │
+│         │   -                                                                                                │
 │         │                                                                                                    │
-│         │   - -                                                                                              │
-│         │       -    -                                                                                       │
-│         │      -        --   -                                                                               │
-│         │        -  -                                                                                        │
-│         │          -       -   --           --                                                               │
-│         │             -                                                                                      │
-│         │                                 -                                                                  │
-│         │                                               -     -                                 -            │
-│         │                                                                                  -                 │
-│         │                     -                                 -          -    -              -          -  │
-│         │                 -                       -      -                -         -                        │
-│l        │                                                                                            -       │
-│o        │                              -           -         -   -          -               -       -        │
-│g        │                                -                                                                   │
-│         │                                              -   -                                     -      -    │
-│l        │                                                                        -     -  -                  │
-│o        │                                                                                                    │
-│s        │                          -             -                     -                 -                   │
-│s        │                                             -                               -                      │
-│         │                                                                                                    │
-│         │                                                                                                    │
-│         │                                                                                                -   │
+│         │     -  -                                                                                           │
+│         │            -   -                                                                                   │
+│         │       -       -  - -  -                                                                            │
+│         │      -    -          -          -  -                                                               │
+│         │                           -       -                                                                │
+│         │          -  -                           -                                                          │
+│         │                 -                           -           -                                          │
+│         │                     -          -       -               -                                           │
+│         │                                                     -           -                -   -             │
+│         │                                          -   -        -               -   -                        │
+│l        │                          -   -                              -    --                            -   │
+│o        │                         -                                                       -             -    │
+│g        │                                                  -                                    -            │
+│         │                                                                    -                      --    -  │
+│l        │                                               -    -          -        -          -    -           │
+│o        │                                                -                                                   │
+│s        │                                                                             -                      │
+│s        │                                                                                                    │
+│         │                            -                                                                       │
+│         │                                                   -                  -                             │
 │         │                                                                                                    │
 │         │                                                                                                    │
+│         │                                                                            -                       │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
-│         │                                                                    -                               │
+│         │                                                                              -                     │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
-│ -1.00e+1│                         - --  -     --    -       -     -- -- -      -  -  -        -    -  -    - │
+│ -1.00e+1│                               -     --    -              - - -          -      -    -    -  -    - │
 ├─────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
 │         │0.00                                                                                         7.90e+1│
 │         │                                                step                                                │
File "test/training/bigram.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/training/bigram.expected _build/default/test/training/bigram.exe.output
diff --git a/_build/default/test/training/bigram.expected b/_build/default/test/training/bigram.exe.output
index 47b6993..fff4762 100644
--- a/_build/default/test/training/bigram.expected
+++ b/_build/default/test/training/bigram.exe.output
@@ -14,20 +14,20 @@ input_size: 229000
 ││      │ 8.92e-1  6.95e-1  ...  2.32e-1  4.84e-2 ││
 │└──────┴─────────────────────────────────────────┘│
 └──────────────────────────────────────────────────┘
-Epoch 0, loss=2.370636
+Epoch 0, loss=2.360536
                                                                                                                                       #38 /._batch_loss
-                                                                                                                                       2.37
+                                                                                                                                       2.36
                                                                                                                                       #39 grad_/._batch_loss
                                                                                                                                        1.00
                                                                                                                                    #36 =>                                                                                                                                         │#35 1000 Virt/40
-                                                                                                                                    2.37e+3                                                                                                                                       │<void>
+                                                                                                                                    2.36e+3                                                                                                                                       │<void>
                                                                                                                                    #37 grad_=>                                                                                                                                    │
                                                                                                                                     1.00e-3                                                                                                                                       │
                                                                                                                                 #33 neg_loss                                                                                                                                      │
-                                                                                                                                 2.46                                                                                                                                             │
+                                                                                                                                 2.43                                                                                                                                             │
                                                                                                                                  2.63                                                                                                                                             │
                                                                                                                                  ...                                                                                                                                              │
-                                                                                                                                 4.05                                                                                                                                             │
+                                                                                                                                 4.08                                                                                                                                             │
                                                                                                                                  3.60                                                                                                                                             │
                                                                                                                                 #34 grad_neg_loss                                                                                                                                 │
                                                                                                                                  1.00e-3                                                                                                                                          │
@@ -36,10 +36,10 @@ Epoch 0, loss=2.370636
                                                                                                                                  1.00e-3                                                                                                                                          │
                                                                                                                                  1.00e-3                                                                                                                                          │
                                                                                                                                    #31 log                                                                                                                                        │
-                                                                                                                                    -2.46                                                                                                                                         │
+                                                                                                                                    -2.43                                                                                                                                         │
                                                                                                                                     -2.63                                                                                                                                         │
                                                                                                                                     ...                                                                                                                                           │
-                                                                                                                                    -4.05                                                                                                                                         │
+                                                                                                                                    -4.08                                                                                                                                         │
                                                                                                                                     -3.60                                                                                                                                         │
                                                                                                                                    #32 grad_log                                                                                                                                   │
                                                                                                                                     -1.00e-3                                                                                                                                      │
@@ -48,16 +48,16 @@ Epoch 0, loss=2.370636
                                                                                                                                     -1.00e-3                                                                                                                                      │
                                                                                                                                     -1.00e-3                                                                                                                                      │
                                                                                                                              #29 =>_output_probs                                                                                                                                  │
-                                                                                                                              8.49e-2                                                                                                                                             │
-                                                                                                                              7.14e-2                                                                                                                                             │
+                                                                                                                              8.79e-2                                                                                                                                             │
+                                                                                                                              7.18e-2                                                                                                                                             │
                                                                                                                               ...                                                                                                                                                 │
-                                                                                                                              1.72e-2                                                                                                                                             │
+                                                                                                                              1.68e-2                                                                                                                                             │
                                                                                                                               2.72e-2                                                                                                                                             │
                                                                                                                              #30 grad_=>_output_probs                                                                                                                             │
-                                                                                                                              -1.17e-2                                                                                                                                            │
-                                                                                                                              -1.40e-2                                                                                                                                            │
+                                                                                                                              -1.13e-2                                                                                                                                            │
+                                                                                                                              -1.39e-2                                                                                                                                            │
                                                                                                                               ...                                                                                                                                                 │
-                                                                                                                              -5.78e-2                                                                                                                                            │
+                                                                                                                              -5.93e-2                                                                                                                                            │
                                                                                                                               -3.66e-2                                                                                                                                            │
                                                                                                                   #27 *.                                                                                                                                                          │
                                                                                                                    0.00     0.00  ...  0.00  0.00                                                                                                                                 │
@@ -66,17 +66,17 @@ Epoch 0, loss=2.370636
                                                                                                                    0.00     0.00  ...  0.00  0.00                                                                                                                                 │
                                                                                                                    2.72e-2  0.00  ...  0.00  0.00                                                                                                                                 │
                                                                                                                   #28 grad_*.                                                                                                                                                     │
-                                                                                                                   -1.17e-2  -1.17e-2  ...  -1.17e-2  -1.17e-2                                                                                                                    │
-                                                                                                                   -1.40e-2  -1.40e-2  ...  -1.40e-2  -1.40e-2                                                                                                                    │
+                                                                                                                   -1.13e-2  -1.13e-2  ...  -1.13e-2  -1.13e-2                                                                                                                    │
+                                                                                                                   -1.39e-2  -1.39e-2  ...  -1.39e-2  -1.39e-2                                                                                                                    │
                                                                                                                    ...       ...       ...  ...       ...                                                                                                                         │
-                                                                                                                   -5.78e-2  -5.78e-2  ...  -5.78e-2  -5.78e-2                                                                                                                    │
+                                                                                                                   -5.93e-2  -5.93e-2  ...  -5.93e-2  -5.93e-2                                                                                                                    │
                                                                                                                    -3.66e-2  -3.66e-2  ...  -3.66e-2  -3.66e-2                                                                                                                    │
                                                      #20 /._mlp_@|_input                                                                            │                                                #3 @|_output                                                                 │
-                                                      4.48e-2  2.51e-2  ...  2.61e-2  7.03e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
-                                                      1.08e-1  2.04e-2  ...  2.14e-2  2.25e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
+                                                      4.44e-2  2.52e-2  ...  2.58e-2  7.27e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
+                                                      1.11e-1  2.02e-2  ...  2.10e-2  2.23e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
                                                       ...      ...      ...  ...      ...                                                           │                                                 ...   ...   ...  ...   ...                                                  │
-                                                      2.15e-2  1.07e-2  ...  6.43e-2  1.27e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
-                                                      2.72e-2  3.04e-2  ...  3.33e-2  4.89e-2                                                       │                                                 1.00  0.00  ...  0.00  0.00                                                 │
+                                                      2.10e-2  1.03e-2  ...  6.61e-2  1.24e-2                                                       │                                                 0.00  0.00  ...  0.00  0.00                                                 │
+                                                      2.72e-2  3.02e-2  ...  3.37e-2  4.85e-2                                                       │                                                 1.00  0.00  ...  0.00  0.00                                                 │
                                                      #21 grad_/._mlp_@|_input                                                                       │#1 tensor                                                                                                                    │
                                                       0.00      0.00  ...  0.00  0.00                                                               │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │ ... │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │
                                                       0.00      0.00  ...  0.00  0.00                                                               │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │
@@ -84,53 +84,53 @@ Epoch 0, loss=2.370636
                                                       0.00      0.00  ...  0.00  0.00                                                               │ 0.00  0.00  ...  0.00  0.00 │ 1.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │
                                                       -3.66e-2  0.00  ...  0.00  0.00                                                               │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 1.00  0.00  ...  0.00  0.00 │
 [#16 exp_counts]│                                                            #18 =>                                                                 │                                                                                                                             │
-                │                                                             1.28e+2                                                               │                                                                                                                             │
+                │                                                             1.29e+2                                                               │                                                                                                                             │
                 │                                                             1.55e+2                                                               │                                                                                                                             │
                 │                                                             ...                                                                   │                                                                                                                             │
-                │                                                             2.13e+2                                                               │                                                                                                                             │
-                │                                                             1.26e+2                                                               │                                                                                                                             │
+                │                                                             2.19e+2                                                               │                                                                                                                             │
+                │                                                             1.27e+2                                                               │                                                                                                                             │
                 │                                                            #19 grad_=>                                                            │                                                                                                                             │
-                │                                                             7.76e-6                                                               │                                                                                                                             │
-                │                                                             6.44e-6                                                               │                                                                                                                             │
+                │                                                             7.74e-6                                                               │                                                                                                                             │
+                │                                                             6.42e-6                                                               │                                                                                                                             │
                 │                                                             ...                                                                   │                                                                                                                             │
-                │                                                             4.67e-6                                                               │                                                                                                                             │
-                │                                                             7.87e-6                                                               │                                                                                                                             │
+                │                                                             4.56e-6                                                               │                                                                                                                             │
+                │                                                             7.86e-6                                                               │                                                                                                                             │
                 │                                            #16 exp_counts                                                                         │                                                                                                                             │
-                │                                             5.77     3.24  ...  3.36     9.05                                                     │                                                                                                                             │
-                │                                             1.68e+1  3.16  ...  3.32     3.50                                                     │                                                                                                                             │
+                │                                             5.73     3.26  ...  3.34     9.38                                                     │                                                                                                                             │
+                │                                             1.73e+1  3.15  ...  3.28     3.47                                                     │                                                                                                                             │
                 │                                             ...      ...   ...  ...      ...                                                      │                                                                                                                             │
-                │                                             4.59     2.28  ...  1.37e+1  2.72                                                     │                                                                                                                             │
-                │                                             3.46     3.86  ...  4.23     6.20                                                     │                                                                                                                             │
+                │                                             4.61     2.26  ...  1.44e+1  2.73                                                     │                                                                                                                             │
+                │                                             3.46     3.85  ...  4.28     6.17                                                     │                                                                                                                             │
                 │                                            #17 grad_exp_counts                                                                    │                                                                                                                             │
-                │                                             7.76e-6   7.76e-6  ...  7.76e-6  7.76e-6                                              │                                                                                                                             │
-                │                                             6.44e-6   6.44e-6  ...  6.44e-6  6.44e-6                                              │                                                                                                                             │
+                │                                             7.74e-6   7.74e-6  ...  7.74e-6  7.74e-6                                              │                                                                                                                             │
+                │                                             6.42e-6   6.42e-6  ...  6.42e-6  6.42e-6                                              │                                                                                                                             │
                 │                                             ...       ...      ...  ...      ...                                                  │                                                                                                                             │
-                │                                             4.67e-6   4.67e-6  ...  4.67e-6  4.67e-6                                              │                                                                                                                             │
-                │                                             -2.81e-4  7.87e-6  ...  7.87e-6  7.87e-6                                              │                                                                                                                             │
+                │                                             4.56e-6   4.56e-6  ...  4.56e-6  4.56e-6                                              │                                                                                                                             │
+                │                                             -2.80e-4  7.86e-6  ...  7.86e-6  7.86e-6                                              │                                                                                                                             │
                 │#14 *                                                                                                                              │                                                                                                                             │
-                │ 1.75  1.17     ...  1.21  2.20                                                                                                    │                                                                                                                             │
-                │ 2.82  1.15     ...  1.20  1.25                                                                                                    │                                                                                                                             │
+                │ 1.74  1.18     ...  1.20  2.23                                                                                                    │                                                                                                                             │
+                │ 2.85  1.14     ...  1.18  1.24                                                                                                    │                                                                                                                             │
                 │ ...   ...      ...  ...   ...                                                                                                     │                                                                                                                             │
-                │ 1.52  8.27e-1  ...  2.62  1.00                                                                                                    │                                                                                                                             │
-                │ 1.24  1.35     ...  1.44  1.82                                                                                                    │                                                                                                                             │
+                │ 1.52  8.16e-1  ...  2.67  1.00                                                                                                    │                                                                                                                             │
+                │ 1.24  1.34     ...  1.45  1.81                                                                                                    │                                                                                                                             │
                 │#15 grad_*                                                                                                                         │                                                                                                                             │
-                │ 4.48e-5   2.51e-5  ...  2.61e-5  7.03e-5                                                                                          │                                                                                                                             │
-                │ 1.08e-4   2.04e-5  ...  2.14e-5  2.25e-5                                                                                          │                                                                                                                             │
+                │ 4.44e-5   2.52e-5  ...  2.58e-5  7.27e-5                                                                                          │                                                                                                                             │
+                │ 1.11e-4   2.02e-5  ...  2.10e-5  2.23e-5                                                                                          │                                                                                                                             │
                 │ ...       ...      ...  ...      ...                                                                                              │                                                                                                                             │
-                │ 2.15e-5   1.07e-5  ...  6.43e-5  1.27e-5                                                                                          │                                                                                                                             │
-                │ -9.72e-4  3.04e-5  ...  3.33e-5  4.89e-5                                                                                          │                                                                                                                             │
+                │ 2.10e-5   1.03e-5  ...  6.61e-5  1.24e-5                                                                                          │                                                                                                                             │
+                │ -9.72e-4  3.02e-5  ...  3.37e-5  4.85e-5                                                                                          │                                                                                                                             │
                 │├─#12 +                                                                                                                            │                                                                                                                             │
-                ││  1.15     1.46  ...  2.56     1.52                                                                                               │                                                                                                                             │
-                ││  9.91e-1  1.42  ...  1.15     8.27e-1                                                                                            │                                                                                                                             │
-                ││  ...      ...   ...  ...      ...                                                                                                │                                                                                                                             │
-                ││  4.79     1.54  ...  9.00e-1  2.62                                                                                               │                                                                                                                             │
-                ││  5.19     1.69  ...  1.05     1.00                                                                                               │                                                                                                                             │
+                ││  1.20  1.46  ...  2.58     1.52                                                                                                  │                                                                                                                             │
+                ││  1.02  1.42  ...  1.13     8.16e-1                                                                                               │                                                                                                                             │
+                ││  ...   ...   ...  ...      ...                                                                                                   │                                                                                                                             │
+                ││  4.87  1.54  ...  8.87e-1  2.67                                                                                                  │                                                                                                                             │
+                ││  5.26  1.69  ...  1.05     1.00                                                                                                  │                                                                                                                             │
                 ││ #13 grad_+                                                                                                                       │                                                                                                                             │
-                ││  1.09e-3   0.00  ...  -2.68e-3  -4.50e-4                                                                                         │                                                                                                                             │
-                ││  9.22e-4   0.00  ...  1.53e-3   7.70e-4                                                                                          │                                                                                                                             │
+                ││  1.06e-3   0.00  ...  -2.72e-3  -4.83e-4                                                                                         │                                                                                                                             │
+                ││  8.95e-4   0.00  ...  1.48e-3   7.43e-4                                                                                          │                                                                                                                             │
                 ││  ...       ...   ...  ...       ...                                                                                              │                                                                                                                             │
-                ││  -3.60e-3  0.00  ...  1.19e-3   -3.36e-3                                                                                         │                                                                                                                             │
-                ││  -3.33e-3  0.00  ...  3.95e-4   -8.07e-5                                                                                         │                                                                                                                             │
+                ││  -3.26e-3  0.00  ...  1.15e-3   -3.23e-3                                                                                         │                                                                                                                             │
+                ││  -3.08e-3  0.00  ...  3.67e-4   -1.00e-4                                                                                         │                                                                                                                             │
                 ││ ├─[#9 w]                                                                                                                         │                                                                                                                             │
                 ││ └─#11 1 Virt/40                                                                                                                  │                                                                                                                             │
                 ││   <void>                                                                                                                         │                                                                                                                             │
@@ -145,11 +145,11 @@ Epoch 0, loss=2.370636
                 │     0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00   │                                                                                                                             │
                 │     ...   ...   ...  ...   ...  │ ...   ...   ...  ...   ...  │     │ ...   ...   ...  ...   ...  │ ...   ...   ...  ...   ...    │                                                                                                                             │
                 │     0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  1.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  1.00   │                                                                                                                             │
-                │     0.00  0.00  ...  0.00  0.00 │ 1.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00   │                                                                                                                             │yiyabuaryrwsrioshlrbvi
+                │     0.00  0.00  ...  0.00  0.00 │ 1.00  0.00  ...  0.00  0.00 │     │ 0.00  0.00  ...  0.00  0.00 │ 0.00  0.00  ...  0.00  0.00   │                                                                                                                             │yiyabuaryrwsrioshlraui
 y
-zaqyfdhawgzhfenorih
-zauzvuchanqviceycctushaimnaeibbbuza
-zrcshxsxdcyr
+zaqyfdhawgzhehispoj
+zauzvubjimvreefzaerrreeimnaeibbbuzaann
+zaxsxdcyr
 zaaxxn
 ydqy
 viroh
@@ -160,8 +160,8 @@ yunm
 zxcx
 v
 zashaouucniri
-fel
-vuosmuqyuzqkoar
+gdjgcvismuqyuzqkoar
 zispufkphxooin
 zan
-vcripzakyojchafikvi
+vcripzakyojchaghere
+wyaxygqlelhihakpouqsgjkkhanan
File "test/training/moons_demo.expected", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/training/moons_demo.expected _build/default/test/training/moons_demo.exe.output
diff --git a/_build/default/test/training/moons_demo.expected b/_build/default/test/training/moons_demo.exe.output
index 3d5e347..859fdd7 100644
--- a/_build/default/test/training/moons_demo.expected
+++ b/_build/default/test/training/moons_demo.exe.output
@@ -2,49 +2,49 @@ Retrieving commandline, environment, or config file variable ocannl_log_level
 Found 0, in the config file
 Half-moons scatterplot and decision boundary:
 ┌────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│************************************#*********************************************..................│
-│*****************************##*#*#***###**#*************************************...................│
-│*********************##**#*#*###***#*##*#**#*##*********************************....................│
-│*******************####*##########***#####**####*******************************.....................│
-│**************#**###**#**#*#*#*###*#*#**#*#####*****##************************......................│
-│***************#####*#*##****##**####*####**#**#*#*#*************************.......................│
-│*************#*###*#*#*#*******************#*#*#########*********************.......................│
-│*********#**##*#*#*#**************************####*###*#********************........................│
-│********#****###*#*******************************#**#*#*##*#****************........................│
-│******#*#*#*#####************************************#####******************........................│
-│************###**************************************#*#********************........................│
-│********###**#**************........*******************###*##**************.........................│
-│******####*###***********.............********************###**#***********.........................│
-│*****###*##*#**********...........%%....****************#*##*#*************....................%....│
-│****#*#####***********.........%....%.....****************####**#**********....................%....│
-│****##*#*#**********...........%%%%........****************##*************...................%%.%%..│
-│***####*#**********..............%..%........***************####**********...................%..%.%.│
-│**##*#**#*********..............%.%%...........************###**##********...................%..%..%│
-│*##*#*##*********..............%.%%.%...........**********#**##**#********...................%.%..%.│
-│***####*********...............%%.%%.%............***********#####*#*****....................%....%.│
-│*##*##*#******..................%...%...............********##*#*#*******..................%.%%%.%..│
-│#**#**#******..................%%%.%%................*********#*###******...................%....%..│
-│####********.......................%.%.%...............******##*##*******..................%%%%%....│
-│#***##*****......................%%.%%..%................****#####*#****...................%%%%.%...│
-│##*#******........................%%%.%.%.................********##****.................%..%%%.....│
-│#*#******..........................%%.%.....................***#**##****..................%.%.%%%...│
-│#**#***.............................%%%%%..%..................***#******.................%%%........│
-│##****............................%...%.%%%...................##***#***................%%%.%..%.....│
-│*****...............................%.%%%%........................*****..............%..%.%%.%......│
-│****.................................%%.%%%%.............................................%%.%%......│
-│***....................................%..%..%.....................................%%%%.%%%%%.......│
-│*........................................%.%%.%%..%...............................%%%%%%.%.%........│
-│........................................%%.%%.%%%................................%%.%.%...%.........│
-│.............................................%%%.............................%.%.%..%%..%...........│
-│.............................................%.%%.%%%%%..................%%%.%%.%.%..%..............│
-│............................................%%%.%%%%%%..%.%%..%%.%%%%%%.%%.%%%....%.................│
-│.............................................%..%...%%%%...%.%%%.%%.%%.....%%..%%%..%...............│
+│************************************#**********************************************************.....│
+│*****************************##*#*#***###**#************************************************........│
+│*********************##**#*#*###***#*##*#**#*##*******************************************..........│
+│*******************####*##########***#####**####*****************************************...........│
+│**************#**###**#**#*#*#*###*#*#**#*#####*****##*********************************.............│
+│***************#####*#*##****##**####*####**#**#*#*#**********************************..............│
+│*************#*###*#*#*#*******************#*#*#########*****************************...............│
+│*********#**##*#*#*#**************************####*###*#****************************................│
+│********#****###*#*******************************#**#*#*##*#************************................│
+│******#*#*#*#####************************************#####*************************.................│
+│************###******************.*******************#*#**************************..................│
+│********###**#*****************.....*******************###*##********************...................│
+│******####*###****************.........*******************###**#*****************...................│
+│*****###*##*#***************......%%.....***************#*##*#******************...............%....│
+│****#*#####***************.....%....%.....****************####**#**************................%....│
+│****##*#*#***************......%%%%.........***************##*****************...............%%.%%..│
+│***####*#***************.........%..%........***************####**************...............%..%.%.│
+│**##*#**#**************.........%.%%...........************###**##***********................%..%..%│
+│*##*#*##**************.........%.%%.%...........**********#**##**#**********.................%.%..%.│
+│***####**************..........%%.%%.%............***********#####*#*******..................%....%.│
+│*##*##*#************............%...%...............********##*#*#*********................%.%%%.%..│
+│#**#**#***********.............%%%.%%................*********#*###*******..................%....%..│
+│####*************..................%.%.%...............******##*##*******..................%%%%%....│
+│#***##**********.................%%.%%..%...............*****#####*#****...................%%%%.%...│
+│##*#***********...................%%%.%.%.................********##****.................%..%%%.....│
+│#*#***********.....................%%.%....................****#**##***...................%.%.%%%...│
+│#**#*********.......................%%%%%..%.................****#****...................%%%........│
+│##**********......................%...%.%%%...................##***#**.................%%%.%..%.....│
+│**********..........................%.%%%%...........................................%..%.%%.%......│
+│*********............................%%.%%%%.............................................%%.%%......│
+│********...............................%..%..%.....................................%%%%.%%%%%.......│
+│*******..................................%.%%.%%..%...............................%%%%%%.%.%........│
+│******..................................%%.%%.%%%................................%%.%.%...%.........│
+│*****........................................%%%.............................%.%.%..%%..%...........│
+│****.........................................%.%%.%%%%%..................%%%.%%.%.%..%..............│
+│**..........................................%%%.%%%%%%..%.%%..%%.%%%%%%.%%.%%%....%.................│
+│*............................................%..%...%%%%...%.%%%.%%.%%.....%%..%%%..%...............│
 │....................................................%..%%%%%.%.%.%.%.%..%%%%..%%....................│
 │...................................................%%%...%%.%.%...%...%%..%..%%.....................│
 │.....................................................%....%..%.%%%%%................................│
 └────────────────────────────────────────────────────────────────────────────────────────────────────┘Loss:
 ┌────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ 2.38e+1│-                                                                                                   │
+│ 2.54e+1│-                                                                                                   │
 │        │                                                                                                    │
 │        │                                                                                                    │
 │        │                                                                                                    │
@@ -76,57 +76,57 @@ Half-moons scatterplot and decision boundary:
 │        │                                                                                                    │
 │        │                                                                                                    │
 │        │                                                                                                    │
-│        │                                                                                                    │
 │        │-                                                                                                   │
-│        │   -                                                                                                │
-│        │ -    - -  - - -- -                 -        -                                                      │
-│        │     -    -         -  - -         -- - -- -  -    -                                                │
-│        │-- - -- - -    -- - -- -  - - -- - -- -         - -  - -- - -- - -- -  -   -                        │
-│        │---- -- - -- - ---- -- - ---- -- - -- - -- - --    -                  -  -  - - -- - --   -         │
+│        │ -                                                                                                  │
+│        │   - -                                                                                              │
+│        │      -                                                                                             │
+│        │        - --   -         -  - -- - -- -                                                             │
+│        │-- - -- - -  -  - - -- - -- -           -- - -- - -          -                                      │
+│        │---- ---- -- - -- - -- - -- - -- - --              - - -- - -  - -- -    - -    -  -                │
 │ 0.00   │----------------------------------------------------------------------------------------------------│
 ├────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
 │        │0.00                                                                                         4.79e+3│
 │        │                                                step                                                │
 └────────┴────────────────────────────────────────────────────────────────────────────────────────────────────┘Log-loss, for better visibility:
 ┌─────────┬────────────────────────────────────────────────────────────────────────────────────────────────────┐
-│ 3.17    │-                                                                                                   │
+│ 3.23    │-                                                                                                   │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │                                                                                                    │
 │         │-                                                                                                   │
+│         │-                                                                                                   │
+│         │ - - -                                                                                              │
+│         │      -                        -    -                                                               │
+│         │        - -- - --        -- - -  - -  - -- - -    -                                                 │
+│         │-- - -- - -- - -- - -- - -- - -               - -    -    -  -                                      │
+│         │---- ---- -- - -- - -- - --   -  - -               -   --   -  - -  -      -                        │
+│         │  -  - -- -  - -- - -- - -- - -- - --    - -                      -   -  -    - -  -                │
+│         │-  -   -    -        - -  - -      -- - -    -- - -                    -    -    -             -    │
+│         │-              -  - -  - --   -- - -  - --                                           -              │
+│         │-  -   -     - - -   -              -      -    - -                                                 │
+│         │-    -- - - -     - -  - -  -  -    -                                             -       -  -      │
+│l        │- -  --          -   - -  - -    - -         -                          -             -       -     │
+│o        │-- --   - - - --        -   -- -       -           -                                       -        │
+│g        │--  -             -    -   - -  ---     -           -  -         -         -    -       -       -   │
+│         │ ---   - -  --           -   - -    -     -   --     -        -  - --                             - │
+│l        │-  -        ---  -- -  -  -- -    - --    - ---- -     -    -     --   -  -    -         -          │
+│o        │--   ---   - -- -  -   -  -  -    -- -  ---- --   -  -- -- - -  -   --    --                        │
+│s        │-  --    -    -     - --- --  - - - -   -- -   -    -       -   -    -  -     --                    │
+│s        │ -      -           -- ------ ---    -   -  -    - - - - - --         -          - - -         -    │
+│         │-               --   ------   -----    --          - -- -      -   -    -  - -  -    -         -   -│
+│         │ -           --    - --      -  -    -                    -  -     -        -    -  -  -  -         │
+│         │-          -       - -- - --  -      -           -      -    -                              -  -    │
+│         │      -    -      --  -    -  -            --                         --     -       -       -      │
+│         │    - -                --  -----                            -         - -    -      -               │
+│         │                   -   -      -     -  -               -                            -               │
+│         │                                             -  -                                              -    │
+│         │-                     -                                                        -                    │
+│         │-                      -         -                      -             -       -                     │
+│         │                       - -                                                                          │
+│         │                     -                                       -                                      │
+│         │                                                                                                    │
 │         │                                                                                                    │
-│         │-  -                                                                                                │
-│         │ -   -- - -- - -- - -               -        --                                                     │
-│         │      -           -  - - -- -  -   -- - -- -    - -- -  -    -                                      │
-│         │-- - -- - -- - ---  -  - -- - -- - -- -                -  - -  - -- -  -   -                        │
-│         │---- -- - -- - ---- -- - ---- -- - -- - --   --                       -  -       -    -             │
-│         │-  - -- - -- - -    -    -  - -  - --      -       - -                      - - -  - -  - -         │
-│         │- -  -- -    -   --  ---   --  - - -  - --   -  - -                                          -      │
-│         │- --  -      -   -                  - -  -   -         -- -  -                             -      - │
-│         │-  - -    --        --           - -- - --      -    - -    -    -  -                          --   │
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-│g        │ -  - -- -    -          -         --    -  -   -  -              -    -         --    -    -       │
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-│l        │--    -- - -          -     -  -- -- --- -- -     - - -    -  - -  -  -   --                  -    -│
-│o        │--  - --  ----        -     - --    -- -- -  --   ---- - - -         -              -               │
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-│s        │ -- - --   -         ---    --    ------ --     --    -- -    -             --               -      │
-│         │        -  -     -   --   -  -   - - - --    --   -   ---  --           -        - - -    -         │
-│         │-  - ---      -      -       -   ---    -    - - - -   --  -    -       -    -  -             -  -  │
-│         │       - - -          -     -    --  ---   - -  -  -   -  -       - -   -       -   -               │
-│         │-  -                           - -   - -    -     -         -  -                          -         │
-│         │-                         -     --    - - - -  -    -        -       -   -        -                 │
-│         │                               - -   -  -      -    -         -- -              -     -             │
-│         │-   -                --          -      - --   -               -                                    │
-│         │       -                  -   -    - --     -            -               -                          │
-│         │                                  -     -        -               -         -                        │
-│         │                                -         -           -      -                 -              -     │
-│         │                                                 -                                                  │
-│         │      -                                                                                             │
-│         │                                                      -                                             │
-│         │                                                                -                                   │
+│         │                           -                                                                        │
 │         │                                                                                                    │
 │ -1.00e+1│----------------------------------------------------------------------------------------------------│
 ├─────────┼────────────────────────────────────────────────────────────────────────────────────────────────────┤
"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1
2025-08-09 21:09.53: Job failed: Failed: Build failed