(lower-bound)

2026-04-25 17:23.23: New job: test ocsigen/lwt https://github.com/ocsigen/lwt.git#refs/heads/prepare-5-9-4 (e39d447ef7bf218e66f184a7b9f9960802d80d5e) (linux-x86_64:(lower-bound))
Base: ocaml/opam:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c
Opam project build


To reproduce locally:


git clone --recursive "https://github.com/ocsigen/lwt.git" -b "prepare-5-9-4" && cd "lwt" && git reset --hard e39d447e
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c
# debian-13-4.08_opam-2.5
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
RUN sudo ln -f /usr/bin/opam-2.5 /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 4ae3c774e4a07972d8dc71ead3a8294779f6dada || git fetch origin master) && git reset -q --hard 4ae3c774e4a07972d8dc71ead3a8294779f6dada && git log --no-decorate -n1 --oneline && opam update -u
COPY --chown=1000:1000 lwt_retry.opam lwt_react.opam lwt_ppx__ppx_let_tests.opam lwt_ppx.opam lwt.opam ./
RUN opam pin add -yn lwt_retry.dev './' && \
opam pin add -yn lwt_react.dev './' && \
opam pin add -yn lwt_ppx__ppx_let_tests.dev './' && \
opam pin add -yn lwt_ppx.dev './' && \
opam pin add -yn lwt.dev './'
RUN echo '(lang dune 3.0)' > './dune-project'
ENV DEPS="base-bigarray.base base-bytes.base base-threads.base base-unix.base conf-m4.1 cppo.1.6.1 dune.3.15.3 dune-configurator.2.5.1 dune-private-libs.2.5.1 jbuilder.1.0+beta20.1 ocaml.4.08.1 ocaml-base-compiler.4.08.1 ocaml-compiler-libs.v0.11.0 ocaml-config.1 ocamlbuild.0.14.0 ocamlfind.1.8.0 ocplib-endian.1.0 ppx_derivers.1.0 ppxlib.0.37.0 react.1.2.2 sexplib0.v0.12.0 stdlib-shims.0.1.0 topkg.1.0.8"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.5 --depext-only -y lwt_retry.dev lwt_react.dev lwt_ppx.dev lwt.dev $DEPS
RUN opam install $DEPS
COPY --chown=1000:1000 . /src
RUN opam exec -- dune build --only-packages=lwt_retry,lwt_react,lwt_ppx,lwt @install @check @runtest && rm -rf _build


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


2026-04-25 17:23.23: Using cache hint "ocsigen/lwt-ocaml/opam:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c-debian-13-4.08_opam-2.5-2fcfcfeea1ab58f44723026fa8997b86"
2026-04-25 17:23.23: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c)
(comment debian-13-4.08_opam-2.5)
(user (uid 1000) (gid 1000))
(env CLICOLOR_FORCE 1)
(env OPAMCOLOR always)
(workdir /src)
(run (shell "sudo ln -f /usr/bin/opam-2.5 /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 4ae3c774e4a07972d8dc71ead3a8294779f6dada || git fetch origin master) && git reset -q --hard 4ae3c774e4a07972d8dc71ead3a8294779f6dada && git log --no-decorate -n1 --oneline && opam update -u"))
(copy (src lwt_retry.opam lwt_react.opam lwt_ppx__ppx_let_tests.opam lwt_ppx.opam lwt.opam)
(dst ./))
(run (network host)
(shell  "opam pin add -yn lwt_retry.dev './' && \
\nopam pin add -yn lwt_react.dev './' && \
\nopam pin add -yn lwt_ppx__ppx_let_tests.dev './' && \
\nopam pin add -yn lwt_ppx.dev './' && \
\nopam pin add -yn lwt.dev './'"))
(run (shell "echo '(lang dune 3.0)' > './dune-project'"))
(env DEPS "base-bigarray.base base-bytes.base base-threads.base base-unix.base conf-m4.1 cppo.1.6.1 dune.3.15.3 dune-configurator.2.5.1 dune-private-libs.2.5.1 jbuilder.1.0+beta20.1 ocaml.4.08.1 ocaml-base-compiler.4.08.1 ocaml-compiler-libs.v0.11.0 ocaml-config.1 ocamlbuild.0.14.0 ocamlfind.1.8.0 ocplib-endian.1.0 ppx_derivers.1.0 ppxlib.0.37.0 react.1.2.2 sexplib0.v0.12.0 stdlib-shims.0.1.0 topkg.1.0.8")
(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=2.5 --depext-only -y lwt_retry.dev lwt_react.dev lwt_ppx.dev lwt.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 --only-packages=lwt_retry,lwt_react,lwt_ppx,lwt @install @check @runtest && rm -rf _build"))
)


2026-04-25 17:23.23: Waiting for resource in pool OCluster
2026-04-25 17:31.22: Waiting for worker…
2026-04-25 17:33.51: Got resource from pool OCluster
Building on bremusa.ocamllabs.io
All commits already cached
HEAD is now at e39d447ef more engine compat


(from ocaml/opam:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c)
2026-04-25 17:37.22 ---> using "228e5ba11f0bea08c69266bb98d12a75785691261b07b0808652a307a04e14b2" from cache


/: (comment debian-13-4.08_opam-2.5)


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


/: (env CLICOLOR_FORCE 1)


/: (env OPAMCOLOR always)


/: (workdir /src)


/src: (run (shell "sudo ln -f /usr/bin/opam-2.5 /usr/bin/opam"))
2026-04-25 17:37.22 ---> using "8f0c0f8b904420153cc7d08b1a8906e69995fa51995d7a62aa1c073c7191c917" 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
2026-04-25 17:37.22 ---> using "69a4145a27f132504ea642fc2251248a9d038744f1d63d739fb1292f7f0099ce" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-107-generic
The OCaml toplevel, version 4.08.1
2.5.0
2026-04-25 17:37.22 ---> using "5cac6514a27f9520520e43db3fcfdac4b7207f9a8134f988f146ecf9da38efcb" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2026-04-25 17:37.22 ---> using "b57b6278781af1681d1782728fb84867fcbbe8008d7c20a94689745acc908c11" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e 4ae3c774e4a07972d8dc71ead3a8294779f6dada || git fetch origin master) && git reset -q --hard 4ae3c774e4a07972d8dc71ead3a8294779f6dada && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
42844088d7..f83868273d  master     -> origin/master
4ae3c774e4 Merge pull request #29579 from ocaml/add-msys2-depexts


<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>
[default] synchronised from git+file:///home/opam/opam-repository
default (at git+file:///home/opam/opam-repository):
[WARNING] opam is out-of-date. Please consider updating it (https://opam.ocaml.org/doc/Install.html)


default (at git+file:///home/opam/opam-repository):
[INFO] opam 2.5.1 includes security fixes; please consider upgrading (https://opam.ocaml.org/doc/Install.html)


Everything as up-to-date as possible (run with --verbose to show unavailable upgrades).
However, you may "opam upgrade" these packages explicitly at these versions (e.g. "opam upgrade ocaml.5.5.0"), which will ask permission to downgrade or uninstall the conflicting packages.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2026-04-25 17:37.22 ---> using "1cae88279ccf97f956b2244effac9c91fe42f5a352b03a778482c0d22bb32879" from cache


/src: (copy (src lwt_retry.opam lwt_react.opam lwt_ppx__ppx_let_tests.opam lwt_ppx.opam lwt.opam)
(dst ./))
2026-04-25 17:37.22 ---> saved as "848ef3b85e79613061041edf3be0ffa8fbeb3108134faa4d0481b6fa03ff95be"


/src: (run (network host)
(shell  "opam pin add -yn lwt_retry.dev './' && \
\nopam pin add -yn lwt_react.dev './' && \
\nopam pin add -yn lwt_ppx__ppx_let_tests.dev './' && \
\nopam pin add -yn lwt_ppx.dev './' && \
\nopam pin add -yn lwt.dev './'"))
[lwt_retry.dev] synchronised (file:///src)
lwt_retry is now pinned to file:///src (version dev)
[lwt_react.dev] synchronised (file:///src)
lwt_react is now pinned to file:///src (version dev)
[NOTE] Package lwt_ppx__ppx_let_tests does not exist in opam repositories registered in the current switch.
[lwt_ppx__ppx_let_tests.dev] synchronised (file:///src)
[WARNING] Failed checks on lwt_ppx__ppx_let_tests package definition from source at file:///src:
warning 62: License doesn't adhere to the SPDX standard, see https://spdx.org/licenses/ : "NOTFORRELEASE"
lwt_ppx__ppx_let_tests is now pinned to file:///src (version dev)
[lwt_ppx.dev] synchronised (file:///src)
lwt_ppx is now pinned to file:///src (version dev)
[lwt.dev] synchronised (file:///src)
lwt is now pinned to file:///src (version dev)
2026-04-25 17:37.32 ---> saved as "b730660b5af37dd83a167a7e572d5b70af91d5cdabffa0f23452362df3b2d6cb"


/src: (run (shell "echo '(lang dune 3.0)' > './dune-project'"))
2026-04-25 17:37.32 ---> saved as "235472543509f6ab221d2a45a10a70c224dcb2485f769a548a8a9668b953108b"


/src: (env DEPS "base-bigarray.base base-bytes.base base-threads.base base-unix.base conf-m4.1 cppo.1.6.1 dune.3.15.3 dune-configurator.2.5.1 dune-private-libs.2.5.1 jbuilder.1.0+beta20.1 ocaml.4.08.1 ocaml-base-compiler.4.08.1 ocaml-compiler-libs.v0.11.0 ocaml-config.1 ocamlbuild.0.14.0 ocamlfind.1.8.0 ocplib-endian.1.0 ppx_derivers.1.0 ppxlib.0.37.0 react.1.2.2 sexplib0.v0.12.0 stdlib-shims.0.1.0 topkg.1.0.8")


/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=2.5 --depext-only -y lwt_retry.dev lwt_react.dev lwt_ppx.dev lwt.dev $DEPS"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian trixie InRelease
- Get:2 http://deb.debian.org/debian trixie-updates InRelease [47.3 kB]
- Get:3 http://deb.debian.org/debian-security trixie-security InRelease [43.4 kB]
- Get:4 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [127 kB]
- Fetched 218 kB in 0s (1346 kB/s)
- Reading package lists...
- 


<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[lwt.dev] synchronised (file:///src)
[lwt_ppx.dev] synchronised (file:///src)
[lwt_react.dev] synchronised (file:///src)
[lwt_retry.dev] synchronised (file:///src)


[NOTE] Package ocaml-config is already installed (current version is 1).
[NOTE] Package ocaml-base-compiler is already installed (current version is 4.08.1).
[NOTE] Package ocaml is already installed (current version is 4.08.1).
[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-bigarray is already installed (current version is base).


The following system packages will first need to be installed:
m4


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


+ /usr/bin/sudo "apt-get" "install" "-qq" "-yy" "m4"
- Selecting previously unselected package m4.
- (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 20623 files and directories currently installed.)
- Preparing to unpack .../archives/m4_1.4.19-8_amd64.deb ...
- Unpacking m4 (1.4.19-8) ...
- Setting up m4 (1.4.19-8) ...
# To update the current shell environment, run: eval $(opam env)
2026-04-25 17:37.50 ---> saved as "2b8bbe08993bf7ef28ed747c599fac29b3aa6da7ea168747cb54ab053ab155b2"


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install $DEPS"))
[NOTE] Package ocaml-config is already installed (current version is 1).
[NOTE] Package ocaml-base-compiler is already installed (current version is 4.08.1).
[NOTE] Package ocaml is already installed (current version is 4.08.1).
[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-bigarray is already installed (current version is base).
The following actions will be performed:
=== install 17 packages
- install base-bytes          base
- install conf-m4             1
- install cppo                1.6.1
- install dune                3.15.3
- install dune-configurator   2.5.1
- install dune-private-libs   2.5.1
- install jbuilder            1.0+beta20.1 (deprecated)
- install ocaml-compiler-libs v0.11.0
- install ocamlbuild          0.14.0
- install ocamlfind           1.8.0
- install ocplib-endian       1.0
- install ppx_derivers        1.0
- install ppxlib              0.37.0
- install react               1.2.2
- install sexplib0            v0.12.0
- install stdlib-shims        0.1.0
- install topkg               1.0.8


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved cppo.1.6.1  (cached)
-> retrieved dune-configurator.2.5.1, dune-private-libs.2.5.1  (cached)
-> retrieved dune.3.15.3  (cached)
-> installed conf-m4.1
-> retrieved jbuilder.1.0+beta20.1  (cached)
-> retrieved ocaml-compiler-libs.v0.11.0  (cached)
-> retrieved ocamlbuild.0.14.0  (cached)
-> retrieved ocamlfind.1.8.0  (cached)
-> retrieved ocplib-endian.1.0  (cached)
-> retrieved ppx_derivers.1.0  (cached)
-> retrieved sexplib0.v0.12.0  (cached)
-> retrieved react.1.2.2  (cached)
-> retrieved stdlib-shims.0.1.0  (cached)
-> retrieved topkg.1.0.8  (cached)
-> retrieved ppxlib.0.37.0  (cached)
-> installed ocamlfind.1.8.0
-> installed base-bytes.base
-> installed ocamlbuild.0.14.0
-> installed jbuilder.1.0+beta20.1
-> installed ppx_derivers.1.0
-> installed ocaml-compiler-libs.v0.11.0
-> installed cppo.1.6.1
-> installed topkg.1.0.8
-> installed react.1.2.2
-> installed ocplib-endian.1.0
-> installed dune.3.15.3
-> installed stdlib-shims.0.1.0
-> installed sexplib0.v0.12.0
-> installed dune-private-libs.2.5.1
-> installed dune-configurator.2.5.1
-> installed ppxlib.0.37.0
Done.


<><> jbuilder.1.0+beta20.1 installed successfully <><><><><><><><><><><><><><><>
=> Note: This package is deprecated.
# To update the current shell environment, run: eval $(opam env)
2026-04-25 17:39.28 ---> saved as "16c36a1205578dc6434f4a5c08ed5b2ccddc4952d1938ceaf9ae67fe10d737b4"


/src: (copy (src .) (dst /src))
2026-04-25 17:39.29 ---> saved as "26d81bb907cd12f6f87bb91d09da6ce72f8e26966e06a7dd59a294dd4c5c50d6"


/src: (run (shell "opam exec -- dune build --only-packages=lwt_retry,lwt_react,lwt_ppx,lwt @install @check @runtest && rm -rf _build"))
(cd _build/default/test/retry && ./main.exe)
Testing library 'retry'...
..............
Ok. 14 tests ran, 0 tests skipped in 0.01 seconds
(cd _build/default/test/ppx && ./main.exe)
Testing library 'ppx'...
...................
Ok. 19 tests ran, 0 tests skipped in 1.20 seconds
(cd _build/default/test/core && ./main.exe)
Testing library 'core'...
...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................SSSSSSSSSSSSSSSSSSSSSSS..................................................................................................................................................
Ok. 705 tests ran, 23 tests skipped in 0.39 seconds
(cd _build/default/test/react && ./main.exe)
Testing library 'react'...
...........
Ok. 11 tests ran, 0 tests skipped in 4.51 seconds
(cd _build/default/test/unix && ./main.exe)
Testing library 'unix'...
.....................................SSSSS..............................................................................................................SSSS...................................................................................
Ok. 230 tests ran, 9 tests skipped in 6.31 seconds
2026-04-25 17:39.41 ---> saved as "88f0db0a0d762a87080d5cc8dc2d51335eee744c984511903abfcddb388f83a4"
Job succeeded
2026-04-25 17:39.41: Job succeeded