ubuntu-25.10-5.4_opam-2.5

2026-03-23 09:27.07: New job: test ocaml-multicore/lwt_eio https://github.com/ocaml-multicore/lwt_eio.git#refs/heads/master (e3679c5296dd0aacac825735dab45ded26d55821) (linux-x86_64:ubuntu-25.10-5.4_opam-2.5)
Base: ocaml/opam:ubuntu-25.10-ocaml-5.4@sha256:fef8e549d57e6bc872bbfcde9f96e896c31281f4865349518cb000e3667d4a67
Opam project build


To reproduce locally:


git clone --recursive "https://github.com/ocaml-multicore/lwt_eio.git" -b "master" && cd "lwt_eio" && git reset --hard e3679c52
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:ubuntu-25.10-ocaml-5.4@sha256:fef8e549d57e6bc872bbfcde9f96e896c31281f4865349518cb000e3667d4a67
# ubuntu-25.10-5.4_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 b479391466e5245dda12ec6a6de5f4b13b6d603f || git fetch origin master) && git reset -q --hard b479391466e5245dda12ec6a6de5f4b13b6d603f && git log --no-decorate -n1 --oneline && opam update -u
COPY --chown=1000:1000 lwt_eio.opam ./
RUN opam pin add -yn lwt_eio.dev './'
RUN echo '(lang dune 3.0)' > './dune-project'
ENV DEPS="astring.0.8.5 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigstringaf.0.10.0 camlp-streams.5.0.1 cmdliner.2.1.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.0 dune-configurator.3.22.0 eio.1.3 eio_linux.1.3 eio_main.1.3 eio_posix.1.3 fmt.0.11.0 hmap.0.8.1 iomux.0.4 logs.0.10.0 lwt.6.1.1 lwt-dllist.1.1.0 mdx.2.5.1 mtime.2.1.0 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.0.4 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 psq.0.2.1 re.1.14.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.1.1 uring.2.7.0"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.5 --depext-only -y lwt_eio.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


2026-03-23 09:27.07: Using cache hint "ocaml-multicore/lwt_eio-ocaml/opam:ubuntu-25.10-ocaml-5.4@sha256:fef8e549d57e6bc872bbfcde9f96e896c31281f4865349518cb000e3667d4a67-ubuntu-25.10-5.4_opam-2.5-e8c1b20f09074fcd962a3f10a4b561f6"
2026-03-23 09:27.07: Using OBuilder spec:
((from ocaml/opam:ubuntu-25.10-ocaml-5.4@sha256:fef8e549d57e6bc872bbfcde9f96e896c31281f4865349518cb000e3667d4a67)
(comment ubuntu-25.10-5.4_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 b479391466e5245dda12ec6a6de5f4b13b6d603f || git fetch origin master) && git reset -q --hard b479391466e5245dda12ec6a6de5f4b13b6d603f && git log --no-decorate -n1 --oneline && opam update -u"))
(copy (src lwt_eio.opam) (dst ./))
(run (network host)
(shell "opam pin add -yn lwt_eio.dev './'"))
(run (shell "echo '(lang dune 3.0)' > './dune-project'"))
(env DEPS "astring.0.8.5 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigstringaf.0.10.0 camlp-streams.5.0.1 cmdliner.2.1.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.0 dune-configurator.3.22.0 eio.1.3 eio_linux.1.3 eio_main.1.3 eio_posix.1.3 fmt.0.11.0 hmap.0.8.1 iomux.0.4 logs.0.10.0 lwt.6.1.1 lwt-dllist.1.1.0 mdx.2.5.1 mtime.2.1.0 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.0.4 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 psq.0.2.1 re.1.14.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.1.1 uring.2.7.0")
(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 lwt_eio.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"))
)


2026-03-23 09:27.07: Waiting for resource in pool OCluster
2026-03-23 11:09.38: Waiting for worker…
2026-03-23 11:14.30: Got resource from pool OCluster
Building on laodoke.caelum.ci.dev
All commits already cached
HEAD is now at e3679c5 Merge pull request #30 from talex5/examples


(from ocaml/opam:ubuntu-25.10-ocaml-5.4@sha256:fef8e549d57e6bc872bbfcde9f96e896c31281f4865349518cb000e3667d4a67)
Unable to find image 'ocaml/opam:ubuntu-25.10-ocaml-5.4@sha256:fef8e549d57e6bc872bbfcde9f96e896c31281f4865349518cb000e3667d4a67' locally
docker.io/ocaml/opam@sha256:fef8e549d57e6bc872bbfcde9f96e896c31281f4865349518cb000e3667d4a67: Pulling from ocaml/opam
16c195d4c5e9: Already exists
eef1e591e8a9: Already exists
475b07e782b4: Already exists
18fb99e993e1: Already exists
ca37c6a45798: Already exists
c57691858953: Already exists
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43fe003df081: Already exists
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3417bab79df5: Already exists
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1a46a132d40e: Pulling fs layer
e461a5dda351: Pulling fs layer
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60fb67301e08: Pulling fs layer
bf681241fc68: Pulling fs layer
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401d82f13ac3: Pulling fs layer
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0f86b9a8699c: Pulling fs layer
23eaa9b4d484: Waiting
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e461a5dda351: Verifying Checksum
e461a5dda351: Download complete
60fb67301e08: Verifying Checksum
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bf681241fc68: Verifying Checksum
bf681241fc68: Download complete
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1c659a6a7694: Verifying Checksum
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1a46a132d40e: Verifying Checksum
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77e0ad4866d4: Verifying Checksum
77e0ad4866d4: Download complete
1a46a132d40e: Pull complete
e461a5dda351: Pull complete
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60fb67301e08: Pull complete
bf681241fc68: Pull complete
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1c659a6a7694: Pull complete
dba14649d85a: Pull complete
141dacab2962: Pull complete
77e0ad4866d4: Pull complete
401d82f13ac3: Pull complete
29458acfee8b: Pull complete
0f86b9a8699c: Pull complete
Digest: sha256:fef8e549d57e6bc872bbfcde9f96e896c31281f4865349518cb000e3667d4a67
Status: Downloaded newer image for ocaml/opam@sha256:fef8e549d57e6bc872bbfcde9f96e896c31281f4865349518cb000e3667d4a67
2026-03-23 11:14.30 ---> using "a781d67ad57eb4ac231790d4a694bd40cad33d7e4b31ef1def44795689b32c1f" from cache


/: (comment ubuntu-25.10-5.4_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"))
2026-03-23 11:14.30 ---> using "abe213cdc34cea893280fdf44cd1cad04b0a7e440d2650b191efdd05f6df5c7e" 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
[NOTE] The 'jobs' option was reset, its value was 255 and its new value will vary according to the current number of cores on your machine. You can restore the fixed value using:
opam option jobs=255 --global
Format upgrade done.


<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2026-03-23 11:14.30 ---> using "7659bfa6fdb9326b707eb9973ad8bcdf27440a4236f27ab86e5cd85886d159d5" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-90-generic
The OCaml toplevel, version 5.4.0
2.5.0
2026-03-23 11:14.30 ---> using "d964b47b2ae170f14fe1436dc3eb59c3e2c6b43393eaab8966e7fb9cece21c97" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2026-03-23 11:14.30 ---> using "ee14fa90ac6cc53c98770e42e923950defb8fc6d617d34e15b97a90e3fef1b0c" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e b479391466e5245dda12ec6a6de5f4b13b6d603f || git fetch origin master) && git reset -q --hard b479391466e5245dda12ec6a6de5f4b13b6d603f && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
4f056bfedf..63b7ba71be  master     -> origin/master
b479391466 Merge pull request #29567 from mtelvers/opam-publish-ocaml-version.4.0.4


<><> 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.5.5.0"), which will ask permission to downgrade or uninstall the conflicting packages.
Nothing to do.
# To update the current shell environment, run: eval $(opam env)
2026-03-23 11:14.30 ---> using "7f3a166d7e1db51521a4986863a9e1a50253358533b565671f12ff351de7de4a" from cache


/src: (copy (src lwt_eio.opam) (dst ./))
2026-03-23 11:14.31 ---> saved as "b5289c71a77f69e4e8435bfbf00b0e101e5c8bf4b48868d72b39f97ef1c11078"


/src: (run (network host)
(shell "opam pin add -yn lwt_eio.dev './'"))
[lwt_eio.dev] synchronised (file:///src)
lwt_eio is now pinned to file:///src (version dev)
2026-03-23 11:14.36 ---> saved as "417a7ac969db78273966ff5a49f928f3701fd7dd21800161ab679a2285536976"


/src: (run (shell "echo '(lang dune 3.0)' > './dune-project'"))
2026-03-23 11:14.36 ---> saved as "30ba601d5180f780cf07e77d703bfb49b41c432a5653677452a2468d58ccee10"


/src: (env DEPS "astring.0.8.5 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigstringaf.0.10.0 camlp-streams.5.0.1 cmdliner.2.1.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.0 dune-configurator.3.22.0 eio.1.3 eio_linux.1.3 eio_main.1.3 eio_posix.1.3 fmt.0.11.0 hmap.0.8.1 iomux.0.4 logs.0.10.0 lwt.6.1.1 lwt-dllist.1.1.0 mdx.2.5.1 mtime.2.1.0 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.0.4 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 psq.0.2.1 re.1.14.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.1.1 uring.2.7.0")


/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 lwt_eio.dev $DEPS"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://archive.ubuntu.com/ubuntu questing InRelease
- Get:2 http://archive.ubuntu.com/ubuntu questing-updates InRelease [136 kB]
- Get:3 http://archive.ubuntu.com/ubuntu questing-backports InRelease [133 kB]
- Get:4 http://security.ubuntu.com/ubuntu questing-security InRelease [136 kB]
- Get:5 http://archive.ubuntu.com/ubuntu questing-updates/main amd64 Packages [428 kB]
- Get:6 http://archive.ubuntu.com/ubuntu questing-updates/universe amd64 Packages [265 kB]
- Get:7 http://security.ubuntu.com/ubuntu questing-security/universe amd64 Packages [194 kB]
- Get:8 http://security.ubuntu.com/ubuntu questing-security/main amd64 Packages [302 kB]
- Fetched 1594 kB in 0s (4386 kB/s)
- Reading package lists...
- 


<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[lwt_eio.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 5.4.0).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.0).
[NOTE] Package ocaml is already installed (current version is 5.4.0).
[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).
# To update the current shell environment, run: eval $(opam env)
2026-03-23 11:15.06 ---> saved as "efc1a0b34c1ee1c71b81531b12166626d13d3b59bd0cc827c71f7274cd75580a"


/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 5.4.0).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.0).
[NOTE] Package ocaml is already installed (current version is 5.4.0).
[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 35 packages
- install astring            0.8.5
- install base-bytes         base
- install bigstringaf        0.10.0
- install camlp-streams      5.0.1
- install cmdliner           2.1.0
- install cppo               1.8.0
- install csexp              1.5.2
- install cstruct            6.2.0
- install domain-local-await 1.0.1
- install dune               3.22.0
- install dune-configurator  3.22.0
- install eio                1.3
- install eio_linux          1.3
- install eio_main           1.3
- install eio_posix          1.3
- install fmt                0.11.0
- install hmap               0.8.1
- install iomux              0.4
- install logs               0.10.0
- install lwt                6.1.1
- install lwt-dllist         1.1.0
- install mdx                2.5.1
- install mtime              2.1.0
- install ocaml-version      4.0.4
- install ocamlbuild         0.16.1
- install ocamlfind          1.9.8
- install ocplib-endian      1.2
- install optint             0.3.0
- install psq                0.2.1
- install re                 1.14.0
- install result             1.5
- install seq                base
- install thread-table       1.0.0
- install topkg              1.1.1
- install uring              2.7.0


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved astring.0.8.5  (cached)
-> retrieved bigstringaf.0.10.0  (cached)
-> retrieved camlp-streams.5.0.1  (cached)
-> retrieved cppo.1.8.0  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved domain-local-await.1.0.1  (cached)
-> retrieved cmdliner.2.1.0  (cached)
-> retrieved cstruct.6.2.0  (cached)
-> retrieved fmt.0.11.0  (cached)
-> retrieved hmap.0.8.1  (cached)
-> retrieved iomux.0.4  (cached)
-> retrieved logs.0.10.0  (cached)
-> retrieved lwt.6.1.1  (cached)
-> retrieved lwt-dllist.1.1.0  (cached)
-> retrieved eio.1.3, eio_linux.1.3, eio_main.1.3, eio_posix.1.3  (cached)
-> retrieved mdx.2.5.1  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved ocaml-version.4.0.4  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved ocplib-endian.1.2  (cached)
-> retrieved optint.0.3.0  (cached)
-> retrieved psq.0.2.1  (cached)
-> retrieved re.1.14.0  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved result.1.5  (cached)
-> retrieved thread-table.1.0.0  (cached)
-> retrieved topkg.1.1.1  (cached)
-> retrieved uring.2.7.0  (cached)
-> retrieved dune.3.22.0, dune-configurator.3.22.0  (cached)
-> installed cmdliner.2.1.0
-> installed ocamlfind.1.9.8
-> installed base-bytes.base
-> installed ocamlbuild.0.16.1
-> installed topkg.1.1.1
-> installed hmap.0.8.1
-> installed mtime.2.1.0
-> installed fmt.0.11.0
-> installed astring.0.8.5
-> installed dune.3.22.0
-> installed csexp.1.5.2
-> installed camlp-streams.5.0.1
-> installed cstruct.6.2.0
-> installed lwt-dllist.1.1.0
-> installed ocaml-version.4.0.4
-> installed optint.0.3.0
-> installed psq.0.2.1
-> installed cppo.1.8.0
-> installed re.1.14.0
-> installed result.1.5
-> installed thread-table.1.0.0
-> installed ocplib-endian.1.2
-> installed domain-local-await.1.0.1
-> installed dune-configurator.3.22.0
-> installed bigstringaf.0.10.0
-> installed iomux.0.4
-> installed eio.1.3
-> installed uring.2.7.0
-> installed lwt.6.1.1
-> installed eio_linux.1.3
-> installed eio_posix.1.3
-> installed eio_main.1.3
-> installed logs.0.10.0
-> installed mdx.2.5.1
Done.
# To update the current shell environment, run: eval $(opam env)
2026-03-23 11:18.33 ---> saved as "ff761e7c8d416ce3cc86ceaf3f252060ac4d21a0f8192fddceba79681ae1e787"


/src: (copy (src .) (dst /src))
2026-03-23 11:18.34 ---> saved as "8bbbb0266df5f387bbad93383cb997635f360bff3798b5ff98df68207f8352cf"


/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
(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@67@69-40 -strict-sequence -strict-formats -short-paths -keep-locs -g -I lib/.lwt_eio.objs/byte -I lib/.lwt_eio.objs/native -I /home/opam/.opam/5.4/lib/bigstringaf -I /home/opam/.opam/5.4/lib/bytes -I /home/opam/.opam/5.4/lib/cstruct -I /home/opam/.opam/5.4/lib/domain-local-await -I /home/opam/.opam/5.4/lib/eio -I /home/opam/.opam/5.4/lib/eio/core -I /home/opam/.opam/5.4/lib/eio/runtime_events -I /home/opam/.opam/5.4/lib/eio/unix -I /home/opam/.opam/5.4/lib/eio/utils -I /home/opam/.opam/5.4/lib/fmt -I /home/opam/.opam/5.4/lib/hmap -I /home/opam/.opam/5.4/lib/lwt -I /home/opam/.opam/5.4/lib/lwt-dllist -I /home/opam/.opam/5.4/lib/lwt/unix -I /home/opam/.opam/5.4/lib/mtime -I /home/opam/.opam/5.4/lib/mtime/clock -I /home/opam/.opam/5.4/lib/ocaml/runtime_events -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/ocplib-endian -I /home/opam/.opam/5.4/lib/ocplib-endian/bigstring -I /home/opam/.opam/5.4/lib/optint -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/.lwt_eio.objs/byte/lwt_eio.cmi -no-alias-deps -opaque -o lib/.lwt_eio.objs/native/lwt_eio.cmx -c -impl lib/lwt_eio.ml)
File "lib/lwt_eio.ml", lines 126-174, characters 29-3:
126 | .............................object
127 |   inherit Lwt_engine.abstract
128 |
129 |   method private cleanup =
130 |     try Switch.fail sw Exit
...
171 |
172 |   method! fork =
173 |     is_forked := true
174 | end
Error: This object has virtual methods.
The following methods are virtual : id
(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@67@69-40 -strict-sequence -strict-formats -short-paths -keep-locs -g -bin-annot -bin-annot-occurrences -I lib/.lwt_eio.objs/byte -I /home/opam/.opam/5.4/lib/bigstringaf -I /home/opam/.opam/5.4/lib/bytes -I /home/opam/.opam/5.4/lib/cstruct -I /home/opam/.opam/5.4/lib/domain-local-await -I /home/opam/.opam/5.4/lib/eio -I /home/opam/.opam/5.4/lib/eio/core -I /home/opam/.opam/5.4/lib/eio/runtime_events -I /home/opam/.opam/5.4/lib/eio/unix -I /home/opam/.opam/5.4/lib/eio/utils -I /home/opam/.opam/5.4/lib/fmt -I /home/opam/.opam/5.4/lib/hmap -I /home/opam/.opam/5.4/lib/lwt -I /home/opam/.opam/5.4/lib/lwt-dllist -I /home/opam/.opam/5.4/lib/lwt/unix -I /home/opam/.opam/5.4/lib/mtime -I /home/opam/.opam/5.4/lib/mtime/clock -I /home/opam/.opam/5.4/lib/ocaml/runtime_events -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/ocplib-endian -I /home/opam/.opam/5.4/lib/ocplib-endian/bigstring -I /home/opam/.opam/5.4/lib/optint -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/.lwt_eio.objs/byte/lwt_eio.cmi -no-alias-deps -opaque -o lib/.lwt_eio.objs/byte/lwt_eio.cmo -c -impl lib/lwt_eio.ml)
File "lib/lwt_eio.ml", lines 126-174, characters 29-3:
126 | .............................object
127 |   inherit Lwt_engine.abstract
128 |
129 |   method private cleanup =
130 |     try Switch.fail sw Exit
...
171 |
172 |   method! fork =
173 |     is_forked := true
174 | end
Error: This object has virtual methods.
The following methods are virtual : id
"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1
2026-03-23 11:18.45: Job failed: Failed: Build failed