debian-13-5.2_opam-2.4

2025-10-15 10:18.03: New job: test ocaml-multicore/effects-examples https://github.com/ocaml-multicore/effects-examples.git#refs/heads/master (8a7e80dd29e68e2d05fe4b0399c8535a51f36395) (linux-x86_64:debian-13-5.2_opam-2.4)
Base: ocaml/opam:debian-13-ocaml-5.2@sha256:8254647027c145c5f001ad68be8cb1463fa6c4faa58194592be349515c871b3d
Opam project build


To reproduce locally:


git clone --recursive "https://github.com/ocaml-multicore/effects-examples.git" -b "master" && cd "effects-examples" && git reset --hard 8a7e80dd
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.2@sha256:8254647027c145c5f001ad68be8cb1463fa6c4faa58194592be349515c871b3d
# debian-13-5.2_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 6ef6813522b6ea29933f6451236a1639bdbaec61 || git fetch origin master) && git reset -q --hard 6ef6813522b6ea29933f6451236a1639bdbaec61 && git log --no-decorate -n1 --oneline && opam update -u
COPY --chown=1000:1000 effects-examples.opam ./
RUN opam pin add -yn effects-examples.dev './'
RUN echo '(lang dune 3.0)' > './dune-project'
ENV DEPS="base-bigarray.base base-bytes.base base-domains.base base-nnp.base base-threads.base base-unix.base cppo.1.8.0 csexp.1.5.2 dune.3.20.2 dune-configurator.3.20.2 lwt.5.9.2 multicont.1.0.3 ocaml.5.2.1 ocaml-base-compiler.5.2.1 ocaml-config.3 ocaml-options-vanilla.1 ocamlfind.1.9.8 ocplib-endian.1.2"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.4 --depext-only -y effects-examples.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


2025-10-15 10:18.03: Using cache hint "ocaml-multicore/effects-examples-ocaml/opam:debian-13-ocaml-5.2@sha256:8254647027c145c5f001ad68be8cb1463fa6c4faa58194592be349515c871b3d-debian-13-5.2_opam-2.4-4f8385030f2de051cf772611cf604a42"
2025-10-15 10:18.03: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.2@sha256:8254647027c145c5f001ad68be8cb1463fa6c4faa58194592be349515c871b3d)
(comment debian-13-5.2_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 6ef6813522b6ea29933f6451236a1639bdbaec61 || git fetch origin master) && git reset -q --hard 6ef6813522b6ea29933f6451236a1639bdbaec61 && git log --no-decorate -n1 --oneline && opam update -u"))
(copy (src effects-examples.opam) (dst ./))
(run (network host)
(shell "opam pin add -yn effects-examples.dev './'"))
(run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
(env DEPS "base-bigarray.base base-bytes.base base-domains.base base-nnp.base base-threads.base base-unix.base cppo.1.8.0 csexp.1.5.2 dune.3.20.2 dune-configurator.3.20.2 lwt.5.9.2 multicont.1.0.3 ocaml.5.2.1 ocaml-base-compiler.5.2.1 ocaml-config.3 ocaml-options-vanilla.1 ocamlfind.1.9.8 ocplib-endian.1.2")
(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 effects-examples.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"))
)


2025-10-15 10:18.03: Waiting for resource in pool OCluster
2025-10-15 11:10.47: Waiting for worker…
2025-10-15 11:14.11: Got resource from pool OCluster
Building on phoebe
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
Initialized empty Git repository in /var/cache/obuilder/ocluster/git/effects-examples.git-a1bacf9d4bce447b5edfecd0b50085fe4d7672d3/.git/
HEAD is now at 8a7e80d Merge pull request #44 from ocaml-multicore/multicont-1.0.3


(from ocaml/opam:debian-13-ocaml-5.2@sha256:8254647027c145c5f001ad68be8cb1463fa6c4faa58194592be349515c871b3d)
Unable to find image 'ocaml/opam:debian-13-ocaml-5.2@sha256:8254647027c145c5f001ad68be8cb1463fa6c4faa58194592be349515c871b3d' locally
docker.io/ocaml/opam@sha256:8254647027c145c5f001ad68be8cb1463fa6c4faa58194592be349515c871b3d: Pulling from ocaml/opam
cae3b572364a: Already exists
820d433882fc: Already exists
8f6112f72fa5: Already exists
f06108004adb: Already exists
f34ea90e6bf7: Already exists
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cbbfb6fb652b: Pulling fs layer
3a1db35610e2: Pulling fs layer
3937b1176c8b: Pulling fs layer
241d2b3dd1b6: Pulling fs layer
5bb186d106ca: Pulling fs layer
1c06ca2d5760: Pulling fs layer
af03d24ec752: Pulling fs layer
5bb186d106ca: Waiting
1c06ca2d5760: Waiting
241d2b3dd1b6: Waiting
af03d24ec752: Waiting
3a1db35610e2: Verifying Checksum
3a1db35610e2: Download complete
cbbfb6fb652b: Download complete
cbbfb6fb652b: Pull complete
3a1db35610e2: Pull complete
3937b1176c8b: Verifying Checksum
3937b1176c8b: Download complete
3937b1176c8b: Pull complete
5bb186d106ca: Download complete
1c06ca2d5760: Verifying Checksum
1c06ca2d5760: Download complete
af03d24ec752: Download complete
241d2b3dd1b6: Verifying Checksum
241d2b3dd1b6: Download complete
241d2b3dd1b6: Pull complete
5bb186d106ca: Pull complete
1c06ca2d5760: Pull complete
af03d24ec752: Pull complete
Digest: sha256:8254647027c145c5f001ad68be8cb1463fa6c4faa58194592be349515c871b3d
Status: Downloaded newer image for ocaml/opam@sha256:8254647027c145c5f001ad68be8cb1463fa6c4faa58194592be349515c871b3d
2025-10-15 11:14.21 ---> using "bf76267d990a76b55e032e393494781192467af72d54082c2262dbcd757da75c" from cache


/: (comment debian-13-5.2_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"))
2025-10-15 11:14.21 ---> using "47faf2b644d408d429505fc3dec961bd98ba126c64c353b0d147a4b55be8d190" 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
2025-10-15 11:14.21 ---> using "718c9657b9e67ec4265c85052dc3b662b859c5f18ec6a51bc25d4e2233f1820d" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-84-generic
The OCaml toplevel, version 5.2.1
2.4.1
2025-10-15 11:14.21 ---> using "144a97081da465b9c5dbac8a7a52a751b0e0f38c3be6f9fd57dba2113d7ecf8e" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2025-10-15 11:14.21 ---> using "3a836c924a946171a147eea65e493ec36ba8a131c23988a46badb614c42eb3c4" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e 6ef6813522b6ea29933f6451236a1639bdbaec61 || git fetch origin master) && git reset -q --hard 6ef6813522b6ea29933f6451236a1639bdbaec61 && git log --no-decorate -n1 --oneline && opam update -u"))
6ef6813522 Merge pull request #28449 from dra27/ocaml-compiler-msvc


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


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.5.3.0"), which will ask permission to downgrade or uninstall the conflicting packages.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2025-10-15 11:14.21 ---> using "0d0c78bf33f55735d1b0f178b18e9973b7e695a9bb31769d01b7759a413c0cd0" from cache


/src: (copy (src effects-examples.opam) (dst ./))
2025-10-15 11:14.21 ---> saved as "494d878f27fa390c6d04464d8b8bab36934e450f58dd862b924fec7fc11c1103"


/src: (run (network host)
(shell "opam pin add -yn effects-examples.dev './'"))
[NOTE] Package effects-examples does not exist in opam repositories registered in the current switch.
[effects-examples.dev] synchronised (file:///src)
effects-examples is now pinned to file:///src (version dev)
[WARNING] Failed checks on effects-examples package definition from source at file:///src:
warning 68: Missing field 'license'
2025-10-15 11:14.24 ---> saved as "c2cf8cc9e32da68919e569ab4b0a6ea8fa40eff3ceacf2e468d556b0b1a53753"


/src: (run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
2025-10-15 11:14.25 ---> saved as "3f05dc1de1ca291af112611aaf717ffdddcb38d43626481884d0906d8ac06487"


/src: (env DEPS "base-bigarray.base base-bytes.base base-domains.base base-nnp.base base-threads.base base-unix.base cppo.1.8.0 csexp.1.5.2 dune.3.20.2 dune-configurator.3.20.2 lwt.5.9.2 multicont.1.0.3 ocaml.5.2.1 ocaml-base-compiler.5.2.1 ocaml-config.3 ocaml-options-vanilla.1 ocamlfind.1.9.8 ocplib-endian.1.2")


/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 effects-examples.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 [53.8 kB]
- Fetched 145 kB in 0s (715 kB/s)
- Reading package lists...
- 


<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[effects-examples.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-base-compiler is already installed (current version is 5.2.1).
[NOTE] Package ocaml is already installed (current version is 5.2.1).
[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-domains is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).
2025-10-15 11:14.47 ---> saved as "039086bd3275ccdc5130ebea285edf218711215a6e15cc1c8fb5dbf9a36d6a12"


/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-base-compiler is already installed (current version is 5.2.1).
[NOTE] Package ocaml is already installed (current version is 5.2.1).
[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-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 9 packages
- install base-bytes        base
- install cppo              1.8.0
- install csexp             1.5.2
- install dune              3.20.2
- install dune-configurator 3.20.2
- install lwt               5.9.2
- install multicont         1.0.3
- install ocamlfind         1.9.8
- install ocplib-endian     1.2


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved cppo.1.8.0  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved lwt.5.9.2  (cached)
-> retrieved multicont.1.0.3  (https://opam.ocaml.org/cache)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved ocplib-endian.1.2  (cached)
-> retrieved dune.3.20.2, dune-configurator.3.20.2  (cached)
-> installed ocamlfind.1.9.8
-> installed base-bytes.base
-> installed dune.3.20.2
-> installed csexp.1.5.2
-> installed cppo.1.8.0
-> installed ocplib-endian.1.2
-> installed dune-configurator.3.20.2
-> installed multicont.1.0.3
-> installed lwt.5.9.2
Done.
# To update the current shell environment, run: eval $(opam env)
2025-10-15 11:16.23 ---> saved as "63176cbb8d8331ff7e681dc4d7e6baf0fc918b7bdb92c3733545e5679a1cf085"


/src: (copy (src .) (dst /src))
2025-10-15 11:16.24 ---> saved as "10f2407d52d4885b32d89fcb448f2cf69c145578b3b606383b61c9e060fac224"


/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
(cd _build/default && /home/opam/.opam/5.2/bin/ocamldep.opt -modules -impl ref.ml) > _build/default/.ref.eobjs/dune__exe__Ref.impl.d
File "ref.ml", line 78, characters 12-13:
78 |      effect (Ref init), k ->
^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .algorithmic_differentiation.eobjs/byte -no-alias-deps -opaque -o .algorithmic_differentiation.eobjs/byte/dune__exe__Algorithmic_differentiation.cmo -c -impl algorithmic_differentiation.ml)
File "algorithmic_differentiation.ml", line 26, characters 15-16:
26 |       | effect (Add(a,b)), k ->
^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .fringe.eobjs/byte -no-alias-deps -opaque -o .fringe.eobjs/byte/dune__exe__Fringe.cmo -c -impl fringe.ml)
File "fringe.ml", line 45, characters 13-18:
45 |     | effect Yield e, k -> Yielded (e, k)
^^^^^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .generator.eobjs/byte -no-alias-deps -opaque -o .generator.eobjs/byte/dune__exe__Generator.cmo -c -impl generator.ml)
File "generator.ml", line 63, characters 18-19:
63 |       with effect (Next v), k ->
^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .transaction.eobjs/byte -no-alias-deps -opaque -o .transaction.eobjs/byte/dune__exe__Transaction.cmo -c -impl transaction.ml)
File "transaction.ml", line 26, characters 15-16:
26 |       | effect (Update (r,v)), k -> (fun rb ->
^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .dynamic_state.eobjs/byte -no-alias-deps -opaque -o .dynamic_state.eobjs/byte/dune__exe__Dynamic_state.cmo -c -impl dynamic_state.ml)
File "dynamic_state.ml", line 37, characters 15-16:
37 |       | effect (S.New i), k ->
^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .dyn_wind.eobjs/byte -no-alias-deps -opaque -o .dyn_wind.eobjs/byte/dune__exe__Dyn_wind.cmo -c -impl dyn_wind.ml)
File "dyn_wind.ml", line 12, characters 13-14:
12 |     | effect e, k ->
^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .promises.eobjs/byte -no-alias-deps -opaque -o .promises.eobjs/byte/dune__exe__Promises.cmo -c -impl promises.ml)
File "promises.ml", line 112, characters 17-18:
112 |         | effect (Wait sr), k -> wait sr k; dequeue run_q
^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .reify_reflect.eobjs/byte -no-alias-deps -opaque -o .reify_reflect.eobjs/byte/dune__exe__Reify_reflect.cmo -c -impl reify_reflect.ml)
File "reify_reflect.ml", line 23, characters 13-14:
23 |     | effect (E m), k -> M.bind m (continue k)
^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .pipes.eobjs/byte -no-alias-deps -opaque -o .pipes.eobjs/byte/dune__exe__Pipes.cmo -c -impl pipes.ml)
File "pipes.ml", line 22, characters 11-12:
22 |   | effect (Yield s), k ->
^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .eratosthenes.eobjs/byte -no-alias-deps -opaque -o .eratosthenes.eobjs/byte/dune__exe__Eratosthenes.cmo -c -impl eratosthenes.ml)
File "eratosthenes.ml", line 80, characters 11-12:
80 |   | effect (Send (pid, msg)), k ->
^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I .loop.eobjs/byte -no-alias-deps -opaque -o .loop.eobjs/byte/dune__exe__Loop.cmo -c -impl loop.ml)
File "loop.ml", line 11, characters 11-14:
11 |   | effect Foo, k ->
^^^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/bin/ocamldep.opt -modules -impl sched.ml) > _build/default/.concurrent.eobjs/dune__exe__Sched.impl.d
File "sched.ml", line 21, characters 13-18:
21 |     | effect Yield, k ->
^^^^^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/bin/ocamldep.opt -modules -impl state.ml) > _build/default/.ref.eobjs/dune__exe__State.impl.d
File "state.ml", line 150, characters 13-16:
150 |     | effect Get, k -> continue k (!var : t)
^^^
Error: Syntax error
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I mvar/.chameneos.eobjs/byte -I /home/opam/.opam/5.2/lib/bytes -I /home/opam/.opam/5.2/lib/lwt -I /home/opam/.opam/5.2/lib/lwt/unix -I /home/opam/.opam/5.2/lib/ocaml/threads -I /home/opam/.opam/5.2/lib/ocaml/unix -I /home/opam/.opam/5.2/lib/ocplib-endian -I /home/opam/.opam/5.2/lib/ocplib-endian/bigstring -no-alias-deps -opaque -open Dune__exe -o mvar/.chameneos.eobjs/byte/dune__exe__MVar.cmi -c -intf mvar/MVar.mli)
File "mvar/MVar.mli", line 25, characters 9-12:
25 |   type _ eff +=
^^^
Error: Unbound type constructor eff
(cd _build/default && /home/opam/.opam/5.2/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 -w -50 -w -32 -w -27 -g -bin-annot -bin-annot-occurrences -I mvar/.chameneos.eobjs/byte -I /home/opam/.opam/5.2/lib/bytes -I /home/opam/.opam/5.2/lib/lwt -I /home/opam/.opam/5.2/lib/lwt/unix -I /home/opam/.opam/5.2/lib/ocaml/threads -I /home/opam/.opam/5.2/lib/ocaml/unix -I /home/opam/.opam/5.2/lib/ocplib-endian -I /home/opam/.opam/5.2/lib/ocplib-endian/bigstring -no-alias-deps -opaque -open Dune__exe -o mvar/.chameneos.eobjs/byte/dune__exe__Sched.cmi -c -intf mvar/sched.mli)
File "mvar/sched.mli", line 4, characters 7-10:
4 | type _ eff +=
^^^
Error: Unbound type constructor eff
"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1
2025-10-15 11:16.25: Job failed: Failed: Build failed