opensuse-15.6-5.4_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:opensuse-15.6-5.4_opam-2.5)
Base: ocaml/opam:opensuse-15.6-ocaml-5.4@sha256:d5eedf2db63cad35035cd4beb5f053f9a840735aee88252a355da1bd6a0c1591
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:opensuse-15.6-ocaml-5.4@sha256:d5eedf2db63cad35035cd4beb5f053f9a840735aee88252a355da1bd6a0c1591
# opensuse-15.6-5.4_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:opensuse-15.6-ocaml-5.4@sha256:d5eedf2db63cad35035cd4beb5f053f9a840735aee88252a355da1bd6a0c1591-opensuse-15.6-5.4_opam-2.5-e8c1b20f09074fcd962a3f10a4b561f6"
2026-03-23 09:27.07: Using OBuilder spec:
((from ocaml/opam:opensuse-15.6-ocaml-5.4@sha256:d5eedf2db63cad35035cd4beb5f053f9a840735aee88252a355da1bd6a0c1591)
(comment opensuse-15.6-5.4_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 11:09.40: Waiting for worker…
2026-03-23 11:14.31: Got resource from pool OCluster
Building on doris.caelum.ci.dev
All commits already cached
HEAD is now at e3679c5 Merge pull request #30 from talex5/examples


(from ocaml/opam:opensuse-15.6-ocaml-5.4@sha256:d5eedf2db63cad35035cd4beb5f053f9a840735aee88252a355da1bd6a0c1591)
Unable to find image 'ocaml/opam:opensuse-15.6-ocaml-5.4@sha256:d5eedf2db63cad35035cd4beb5f053f9a840735aee88252a355da1bd6a0c1591' locally
docker.io/ocaml/opam@sha256:d5eedf2db63cad35035cd4beb5f053f9a840735aee88252a355da1bd6a0c1591: Pulling from ocaml/opam
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Digest: sha256:d5eedf2db63cad35035cd4beb5f053f9a840735aee88252a355da1bd6a0c1591
Status: Downloaded newer image for ocaml/opam@sha256:d5eedf2db63cad35035cd4beb5f053f9a840735aee88252a355da1bd6a0c1591
2026-03-23 11:14.32 ---> using "c6a1131d87fe81b3c5dd0a1a137a8f5539f4e2f1fd1faba8a2efef22e8c4eba9" from cache


/: (comment opensuse-15.6-5.4_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 11:14.32 ---> using "aba125f442ebca1613bb2dc403fa17f047432f612fe1fe553be27d9e02cd9dd7" 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
2026-03-23 11:14.32 ---> using "9958be451c1edb34a483a57a08196fec3220f75513964403498fe28c613b8a9f" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-106-generic
The OCaml toplevel, version 5.4.0
2.5.0
2026-03-23 11:14.32 ---> using "fcd9c1d34ef35aa901203eee22440fe414d47a07fca0ba30d8c25a578321e6ea" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2026-03-23 11:14.32 ---> using "b971d9c91a5370a63037966e03acbc1f3330aa7e4ec33858cf986917a901851d" 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 11:14.32 ---> using "b70bd1068637bedba68a57b93f6d68da46237345d260b46cb3c3f0115675e1cc" from cache


/src: (copy (src lwt_eio.opam) (dst ./))
2026-03-23 11:14.32 ---> saved as "92bdbc63d57880a15bb956b4a8a9d27bcf51f85acc2910eb165f5fc72a09fdef"


/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 11:14.32 ---> saved as "d8c5ae30724ab1d444d117059686d370d9b3d09fe130bd09b33cf1617f2b95d9"


/src: (run (shell "echo '(lang dune 3.0)' > './dune-project'"))
2026-03-23 11:14.33 ---> saved as "1251ce7b8791ba0659bdd28c33160e51800ef5a191817c6b4e97aefee86002b3"


/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 "zypper" "--non-interactive" "refresh"
- Retrieving repository 'Update repository of openSUSE Backports' metadata [..
- Looking for gpg keys in repository Update repository of openSUSE Backports.
-   gpgkey=http://download.opensuse.org/update/leap/15.6/backports/repodata/repomd.xml.key
- ....
- .....
- ....
- ....
- ....
- ....
- ....
- ..............done]
- Building repository 'Update repository of openSUSE Backports' cache [..
- ..done]
- Retrieving repository 'Update repository with updates from SUSE Linux Enterprise 15' metadata [..
- Looking for gpg keys in repository Update repository with updates from SUSE Linux Enterprise 15.
-   gpgkey=http://download.opensuse.org/update/leap/15.6/sle/repodata/repomd.xml.key
- .
- ......
- ....
- ....
- ....
- ....
- ...........
- ..........
- ..........
- ..........
- ..........
- ..........
- ........
- ...........done]
- Building repository 'Update repository with updates from SUSE Linux Enterprise 15' cache [..
- ..done]
- Repository 'Main Update Repository' is up to date.
- Repository 'Update Repository (Non-Oss)' is up to date.
- Repository 'Non-OSS Repository' is up to date.
- Repository 'Main Repository' is up to date.
- All repositories have been refreshed.


<><> 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 11:15.21 ---> saved as "a6726262e38ef11ad33dcb37371df186b5b27e9885bf26de5cd0c1cf043a5019"


/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 csexp.1.5.2  (cached)
-> retrieved cppo.1.8.0  (cached)
-> retrieved cmdliner.2.1.0  (cached)
-> retrieved cstruct.6.2.0  (cached)
-> retrieved domain-local-await.1.0.1  (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 eio.1.3, eio_linux.1.3, eio_main.1.3, eio_posix.1.3  (cached)
-> retrieved lwt.6.1.1  (cached)
-> retrieved lwt-dllist.1.1.0  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved ocaml-version.4.0.4  (cached)
-> retrieved mdx.2.5.1  (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 result.1.5  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved re.1.14.0  (cached)
-> retrieved thread-table.1.0.0  (cached)
-> retrieved topkg.1.1.1  (cached)
-> retrieved dune.3.22.0, dune-configurator.3.22.0  (cached)
-> retrieved uring.2.7.0  (cached)
-> installed cmdliner.2.1.0
-> installed ocamlbuild.0.16.1
-> installed ocamlfind.1.9.8
-> installed base-bytes.base
-> installed topkg.1.1.1
-> installed hmap.0.8.1
-> installed fmt.0.11.0
-> installed mtime.2.1.0
-> installed astring.0.8.5
-> installed dune.3.22.0
-> installed csexp.1.5.2
-> installed camlp-streams.5.0.1
-> installed cppo.1.8.0
-> 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 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 uring.2.7.0
-> installed eio.1.3
-> 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 11:16.08 ---> saved as "74c08c871a423fa8cb8f26099e71825c64dce97f0e0a05b6bb11d447d540b8f7"


/src: (copy (src .) (dst /src))
2026-03-23 11:16.08 ---> saved as "9a94a7997e07736a5508a00dc102800c479c2e117e60979d13ffe690d8da2713"


/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@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
(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
"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1
2026-03-23 11:16.12: Job failed: Failed: Build failed