fedora-42-5.4_opam-2.5

2026-04-22 14:12.48: New job: test ocaml-multicore/reagents https://github.com/ocaml-multicore/reagents.git#refs/heads/main (5a385fde1e8b22950ce0afc41a104811d6615a3a) (linux-x86_64:fedora-42-5.4_opam-2.5)
Base: ocaml/opam:fedora-42-ocaml-5.4@sha256:c9a78c1c1c51199def01f859dee97442731545f8963dbec1979d2c2db9c959bb
Opam project build


To reproduce locally:


git clone --recursive "https://github.com/ocaml-multicore/reagents.git" -b "main" && cd "reagents" && git reset --hard 5a385fde
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:fedora-42-ocaml-5.4@sha256:c9a78c1c1c51199def01f859dee97442731545f8963dbec1979d2c2db9c959bb
# fedora-42-5.4_opam-2.5
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
RUN sudo dnf install -y findutils
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 036883c5402b41e0d35f6b200245cc7c3a302395 || git fetch origin master) && git reset -q --hard 036883c5402b41e0d35f6b200245cc7c3a302395 && git log --no-decorate -n1 --oneline && opam update -u
COPY --chown=1000:1000 reagents.opam ./
RUN opam pin add -yn reagents.dev './'
RUN echo '(lang dune 3.0)' > './dune-project'
ENV DEPS="alcotest.1.9.1 astring.0.8.5 backoff.0.1.1 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base cmdliner.2.1.1 domain-local-await.1.0.1 domain-local-timeout.1.0.1 domain_shims.0.1.0 dune.3.22.2 fmt.0.11.0 kcas.0.7.0 kcas_data.0.7.0 lockfree.0.3.1 mtime.2.1.0 multicore-magic.2.3.2 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocamlbuild.0.16.1 ocamlfind.1.9.8 psq.0.2.1 re.1.14.0 seq.base stdlib-shims.0.3.0 thread-table.1.0.0 topkg.1.1.1 uutf.1.0.4 yojson.3.0.0"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.5 --depext-only -y reagents.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


2026-04-22 14:12.48: Using cache hint "ocaml-multicore/reagents-ocaml/opam:fedora-42-ocaml-5.4@sha256:c9a78c1c1c51199def01f859dee97442731545f8963dbec1979d2c2db9c959bb-fedora-42-5.4_opam-2.5-a968c2d244011aa8faef99779c4bc7aa"
2026-04-22 14:12.48: Using OBuilder spec:
((from ocaml/opam:fedora-42-ocaml-5.4@sha256:c9a78c1c1c51199def01f859dee97442731545f8963dbec1979d2c2db9c959bb)
(comment fedora-42-5.4_opam-2.5)
(user (uid 1000) (gid 1000))
(env CLICOLOR_FORCE 1)
(env OPAMCOLOR always)
(workdir /src)
(run (network host)
(shell "sudo dnf install -y findutils"))
(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 036883c5402b41e0d35f6b200245cc7c3a302395 || git fetch origin master) && git reset -q --hard 036883c5402b41e0d35f6b200245cc7c3a302395 && git log --no-decorate -n1 --oneline && opam update -u"))
(copy (src reagents.opam) (dst ./))
(run (network host)
(shell "opam pin add -yn reagents.dev './'"))
(run (shell "echo '(lang dune 3.0)' > './dune-project'"))
(env DEPS "alcotest.1.9.1 astring.0.8.5 backoff.0.1.1 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base cmdliner.2.1.1 domain-local-await.1.0.1 domain-local-timeout.1.0.1 domain_shims.0.1.0 dune.3.22.2 fmt.0.11.0 kcas.0.7.0 kcas_data.0.7.0 lockfree.0.3.1 mtime.2.1.0 multicore-magic.2.3.2 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocamlbuild.0.16.1 ocamlfind.1.9.8 psq.0.2.1 re.1.14.0 seq.base stdlib-shims.0.3.0 thread-table.1.0.0 topkg.1.1.1 uutf.1.0.4 yojson.3.0.0")
(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=2.5 --depext-only -y reagents.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"))
)


2026-04-22 14:12.48: Waiting for resource in pool OCluster
2026-04-22 15:25.42: Waiting for worker…
2026-04-22 15:28.37: Got resource from pool OCluster
Building on toxis.caelum.ci.dev
All commits already cached
HEAD is now at 5a385fd add warning to readme, describe situation with kcas


(from ocaml/opam:fedora-42-ocaml-5.4@sha256:c9a78c1c1c51199def01f859dee97442731545f8963dbec1979d2c2db9c959bb)
2026-04-22 15:28.40 ---> using "423398002419b3482a8b9665338c10f3f6c6b1984e842901c7828810d9f1719f" from cache


/: (comment fedora-42-5.4_opam-2.5)


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


/: (env CLICOLOR_FORCE 1)


/: (env OPAMCOLOR always)


/: (workdir /src)


/src: (run (network host)
(shell "sudo dnf install -y findutils"))
Updating and loading repositories:
Fedora 42 - x86_64 - Updates           100% |   8.6 KiB/s |  10.7 KiB |  00m01s
Fedora 42 - x86_64                     100% |  37.2 KiB/s |  21.4 KiB |  00m01s
Fedora 42 openh264 (From Cisco) - x86_ 100% |   3.4 KiB/s | 986.0   B |  00m00s
Repositories loaded.
Package "findutils-1:4.10.0-5.fc42.x86_64" is already installed.


Nothing to do.
2026-04-22 15:28.40 ---> using "1427494dc45be5d05dbedbb8c6284d5e83d9273a70f2daf74a61f90a98d0153e" from cache


/src: (run (shell "sudo ln -f /usr/bin/opam-2.5 /usr/bin/opam"))
2026-04-22 15:28.40 ---> using "19628ecee2b7021c05d076acb8b575d724060ee9d27e8253ec58be2a65f4ddd0" 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
2026-04-22 15:28.40 ---> using "00f7701599ad8380429df556869d2f9cb63297eff82a94fac2e05a284e8da899" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-107-generic
The OCaml toplevel, version 5.4.1
2.5.0
2026-04-22 15:28.40 ---> using "e55eb9acff13ea939a36766f3c838462b852eaadd915ca3606d1a3083dc268bf" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2026-04-22 15:28.40 ---> using "6c2e1647892afca68a954ba31371313f5c7a85b2327e123f87d1fdd112f8c4bd" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e 036883c5402b41e0d35f6b200245cc7c3a302395 || git fetch origin master) && git reset -q --hard 036883c5402b41e0d35f6b200245cc7c3a302395 && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
42844088d7..80ba534fc6  master     -> origin/master
036883c540 Merge pull request #29788 from dbuenzli/b0-publish-cmdliner.2.1.1


<><> 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
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)
2026-04-22 15:28.40 ---> using "36036cdbd63f65f9eca29a3b51cd2e26346aca2e24094b6d59fb63fb74267869" from cache


/src: (copy (src reagents.opam) (dst ./))
2026-04-22 15:28.41 ---> saved as "769f2baeff927a4f145dd716c27850af65de4b4333a01d3d354eb51388d3c4f7"


/src: (run (network host)
(shell "opam pin add -yn reagents.dev './'"))
[NOTE] Package reagents does not exist in opam repositories registered in the current switch.
[reagents.dev] synchronised (file:///src)
reagents is now pinned to file:///src (version dev)
2026-04-22 15:28.44 ---> saved as "3dfe1c6cf621e82a29f4dd1560b2872477d35946942ee686cd424a4bdcf38174"


/src: (run (shell "echo '(lang dune 3.0)' > './dune-project'"))
2026-04-22 15:28.45 ---> saved as "785820964445351c79ab44f6a4df577db2acc2aa598283ba502c46ace2383c40"


/src: (env DEPS "alcotest.1.9.1 astring.0.8.5 backoff.0.1.1 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base cmdliner.2.1.1 domain-local-await.1.0.1 domain-local-timeout.1.0.1 domain_shims.0.1.0 dune.3.22.2 fmt.0.11.0 kcas.0.7.0 kcas_data.0.7.0 lockfree.0.3.1 mtime.2.1.0 multicore-magic.2.3.2 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocamlbuild.0.16.1 ocamlfind.1.9.8 psq.0.2.1 re.1.14.0 seq.base stdlib-shims.0.3.0 thread-table.1.0.0 topkg.1.1.1 uutf.1.0.4 yojson.3.0.0")


/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=2.5 --depext-only -y reagents.dev $DEPS"))
+ /usr/sbin/sudo "yum" "makecache"
- Updating and loading repositories:
- Repositories loaded.
- Metadata cache created.


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


[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).
[NOTE] Package ocaml-config is already installed (current version is 3).
[NOTE] Package ocaml-compiler is already installed (current version is 5.4.1).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.1).
[NOTE] Package ocaml is already installed (current version is 5.4.1).
[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-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).
# To update the current shell environment, run: eval $(opam env)
2026-04-22 15:29.06 ---> saved as "f68360cd71adbdae0acf6c88699b77ecd63cab778d312ed6257104c40c2cd87a"


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install $DEPS"))
[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).
[NOTE] Package ocaml-config is already installed (current version is 3).
[NOTE] Package ocaml-compiler is already installed (current version is 5.4.1).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.1).
[NOTE] Package ocaml is already installed (current version is 5.4.1).
[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-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 25 packages
- install alcotest             1.9.1
- install astring              0.8.5
- install backoff              0.1.1
- install cmdliner             2.1.1
- install domain-local-await   1.0.1
- install domain-local-timeout 1.0.1
- install domain_shims         0.1.0
- install dune                 3.22.2
- install fmt                  0.11.0
- install kcas                 0.7.0
- install kcas_data            0.7.0
- install lockfree             0.3.1
- install mtime                2.1.0
- install multicore-magic      2.3.2
- install ocaml-syntax-shims   1.0.0
- install ocamlbuild           0.16.1
- install ocamlfind            1.9.8
- install psq                  0.2.1
- install re                   1.14.0
- install seq                  base
- install stdlib-shims         0.3.0
- install thread-table         1.0.0
- install topkg                1.1.1
- install uutf                 1.0.4
- install yojson               3.0.0


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved alcotest.1.9.1  (cached)
-> retrieved astring.0.8.5  (cached)
-> retrieved backoff.0.1.1  (cached)
-> retrieved cmdliner.2.1.1  (cached)
-> retrieved domain-local-await.1.0.1  (cached)
-> retrieved domain-local-timeout.1.0.1  (cached)
-> retrieved domain_shims.0.1.0  (cached)
-> retrieved fmt.0.11.0  (cached)
-> retrieved kcas.0.7.0, kcas_data.0.7.0  (cached)
-> retrieved lockfree.0.3.1  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved multicore-magic.2.3.2  (cached)
-> retrieved ocaml-syntax-shims.1.0.0  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved psq.0.2.1  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved re.1.14.0  (cached)
-> retrieved stdlib-shims.0.3.0  (cached)
-> retrieved thread-table.1.0.0  (cached)
-> retrieved uutf.1.0.4  (cached)
-> retrieved topkg.1.1.1  (cached)
-> retrieved yojson.3.0.0  (cached)
-> retrieved dune.3.22.2  (cached)
-> installed ocamlfind.1.9.8
-> installed cmdliner.2.1.1
-> installed ocamlbuild.0.16.1
-> installed topkg.1.1.1
-> installed mtime.2.1.0
-> installed uutf.1.0.4
-> installed fmt.0.11.0
-> installed astring.0.8.5
-> installed dune.3.22.2
-> installed domain_shims.0.1.0
-> installed backoff.0.1.1
-> installed multicore-magic.2.3.2
-> installed psq.0.2.1
-> installed thread-table.1.0.0
-> installed stdlib-shims.0.3.0
-> installed domain-local-timeout.1.0.1
-> installed domain-local-await.1.0.1
-> installed yojson.3.0.0
-> installed re.1.14.0
-> installed ocaml-syntax-shims.1.0.0
-> installed kcas.0.7.0
-> installed kcas_data.0.7.0
-> installed alcotest.1.9.1
-> installed lockfree.0.3.1
Done.
# To update the current shell environment, run: eval $(opam env)
2026-04-22 15:31.52 ---> saved as "a036de4d2d3d63b030df1cd648761e311c0b1d290645f4a7f6f08cca320449d6"


/src: (copy (src .) (dst /src))
2026-04-22 15:31.53 ---> saved as "6a400edb6d2891e66f2f382199395699ef9bc3adff09be9d20eae37027d28941"


/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
(cd _build/default && /home/opam/.opam/5.4/bin/ocamlc.opt -w @1..3@5..28@30..39@43@46..47@49..57@61..62-40 -strict-sequence -strict-formats -short-paths -keep-locs -g -bin-annot -bin-annot-occurrences -I lib/.reagents.objs/byte -I /home/opam/.opam/5.4/lib/backoff -I /home/opam/.opam/5.4/lib/domain-local-await -I /home/opam/.opam/5.4/lib/domain-local-timeout -I /home/opam/.opam/5.4/lib/domain_shims -I /home/opam/.opam/5.4/lib/kcas -I /home/opam/.opam/5.4/lib/lockfree -I /home/opam/.opam/5.4/lib/mtime -I /home/opam/.opam/5.4/lib/mtime/clock -I /home/opam/.opam/5.4/lib/multicore-magic -H /home/opam/.opam/5.4/lib/multicore-magic/__private__/multicore_magic_atomic_array_unboxed5_4 -H /home/opam/.opam/5.4/lib/multicore-magic/__private__/multicore_magic_atomic_array_unboxed5_4/.public_cmi -I /home/opam/.opam/5.4/lib/ocaml/threads -I /home/opam/.opam/5.4/lib/ocaml/unix -I /home/opam/.opam/5.4/lib/psq -I /home/opam/.opam/5.4/lib/seq -I /home/opam/.opam/5.4/lib/thread-table -cmi-file lib/.reagents.objs/byte/reagents__PostCommitCas.cmi -no-alias-deps -opaque -open Reagents__ -o lib/.reagents.objs/byte/reagents__PostCommitCas.cmo -c -impl lib/postCommitCas.ml)
File "lib/postCommitCas.ml", line 18, characters 12-19:
18 | module Op = Kcas.Op
^^^^^^^
Error: Unbound module Kcas.Op
(cd _build/default && /home/opam/.opam/5.4/bin/ocamlc.opt -w @1..3@5..28@30..39@43@46..47@49..57@61..62-40 -strict-sequence -strict-formats -short-paths -keep-locs -g -bin-annot -bin-annot-occurrences -I lib/.reagents.objs/byte -I /home/opam/.opam/5.4/lib/backoff -I /home/opam/.opam/5.4/lib/domain-local-await -I /home/opam/.opam/5.4/lib/domain-local-timeout -I /home/opam/.opam/5.4/lib/domain_shims -I /home/opam/.opam/5.4/lib/kcas -I /home/opam/.opam/5.4/lib/lockfree -I /home/opam/.opam/5.4/lib/mtime -I /home/opam/.opam/5.4/lib/mtime/clock -I /home/opam/.opam/5.4/lib/multicore-magic -H /home/opam/.opam/5.4/lib/multicore-magic/__private__/multicore_magic_atomic_array_unboxed5_4 -H /home/opam/.opam/5.4/lib/multicore-magic/__private__/multicore_magic_atomic_array_unboxed5_4/.public_cmi -I /home/opam/.opam/5.4/lib/ocaml/threads -I /home/opam/.opam/5.4/lib/ocaml/unix -I /home/opam/.opam/5.4/lib/psq -I /home/opam/.opam/5.4/lib/seq -I /home/opam/.opam/5.4/lib/thread-table -cmi-file lib/.reagents.objs/byte/reagents__Ref.cmi -no-alias-deps -opaque -open Reagents__ -o lib/.reagents.objs/byte/reagents__Ref.cmo -c -impl lib/ref.ml)
File "lib/ref.ml", line 23, characters 14-21:
23 |   module Op = Kcas.Op
^^^^^^^
Error: Unbound module Kcas.Op
(cd _build/default && /home/opam/.opam/5.4/bin/ocamlopt.opt -w @1..3@5..28@30..39@43@46..47@49..57@61..62-40 -strict-sequence -strict-formats -short-paths -keep-locs -g -I lib/.reagents.objs/byte -I lib/.reagents.objs/native -I /home/opam/.opam/5.4/lib/backoff -I /home/opam/.opam/5.4/lib/domain-local-await -I /home/opam/.opam/5.4/lib/domain-local-timeout -I /home/opam/.opam/5.4/lib/domain_shims -I /home/opam/.opam/5.4/lib/kcas -I /home/opam/.opam/5.4/lib/lockfree -I /home/opam/.opam/5.4/lib/mtime -I /home/opam/.opam/5.4/lib/mtime/clock -I /home/opam/.opam/5.4/lib/multicore-magic -I /home/opam/.opam/5.4/lib/multicore-magic/__private__/multicore_magic_atomic_array_unboxed5_4 -H /home/opam/.opam/5.4/lib/multicore-magic/__private__/multicore_magic_atomic_array_unboxed5_4/.public_cmi -I /home/opam/.opam/5.4/lib/ocaml/threads -I /home/opam/.opam/5.4/lib/ocaml/unix -I /home/opam/.opam/5.4/lib/psq -I /home/opam/.opam/5.4/lib/seq -I /home/opam/.opam/5.4/lib/thread-table -cmi-file lib/.reagents.objs/byte/reagents__PostCommitCas.cmi -no-alias-deps -opaque -open Reagents__ -o lib/.reagents.objs/native/reagents__PostCommitCas.cmx -c -impl lib/postCommitCas.ml)
File "lib/postCommitCas.ml", line 18, characters 12-19:
18 | module Op = Kcas.Op
^^^^^^^
Error: Unbound module Kcas.Op
(cd _build/default && /home/opam/.opam/5.4/bin/ocamlopt.opt -w @1..3@5..28@30..39@43@46..47@49..57@61..62-40 -strict-sequence -strict-formats -short-paths -keep-locs -g -I lib/.reagents.objs/byte -I lib/.reagents.objs/native -I /home/opam/.opam/5.4/lib/backoff -I /home/opam/.opam/5.4/lib/domain-local-await -I /home/opam/.opam/5.4/lib/domain-local-timeout -I /home/opam/.opam/5.4/lib/domain_shims -I /home/opam/.opam/5.4/lib/kcas -I /home/opam/.opam/5.4/lib/lockfree -I /home/opam/.opam/5.4/lib/mtime -I /home/opam/.opam/5.4/lib/mtime/clock -I /home/opam/.opam/5.4/lib/multicore-magic -I /home/opam/.opam/5.4/lib/multicore-magic/__private__/multicore_magic_atomic_array_unboxed5_4 -H /home/opam/.opam/5.4/lib/multicore-magic/__private__/multicore_magic_atomic_array_unboxed5_4/.public_cmi -I /home/opam/.opam/5.4/lib/ocaml/threads -I /home/opam/.opam/5.4/lib/ocaml/unix -I /home/opam/.opam/5.4/lib/psq -I /home/opam/.opam/5.4/lib/seq -I /home/opam/.opam/5.4/lib/thread-table -cmi-file lib/.reagents.objs/byte/reagents__Ref.cmi -no-alias-deps -opaque -open Reagents__ -o lib/.reagents.objs/native/reagents__Ref.cmx -c -impl lib/ref.ml)
File "lib/ref.ml", line 23, characters 14-21:
23 |   module Op = Kcas.Op
^^^^^^^
Error: Unbound module Kcas.Op
"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1
2026-04-22 15:31.56: Job failed: Failed: Build failed