2026-04-22 14:12.56: New job: test ocaml-multicore/lwt_eio https://github.com/ocaml-multicore/lwt_eio.git#refs/heads/master (1fb0815d20827bc3e336b5410fbb0d49b36f5334) (linux-x86_64:ubuntu-24.04-5.4_opam-2.5) Base: ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b 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 1fb0815d cat > Dockerfile <<'END-OF-DOCKERFILE' FROM ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b # ubuntu-24.04-5.4_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 036883c5402b41e0d35f6b200245cc7c3a302395 || git fetch origin master) && git reset -q --hard 036883c5402b41e0d35f6b200245cc7c3a302395 && 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.2.1.1 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.2 dune-configurator.3.22.2 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.2.5.2 mtime.2.1.0 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.1.0 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 2026-04-22 14:12.56: Using cache hint "ocaml-multicore/lwt_eio-ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b-ubuntu-24.04-5.4_opam-2.5-28bb6d7135d552d8f2016311f7203006" 2026-04-22 14:12.56: Using OBuilder spec: ((from ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b) (comment ubuntu-24.04-5.4_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 036883c5402b41e0d35f6b200245cc7c3a302395 || git fetch origin master) && git reset -q --hard 036883c5402b41e0d35f6b200245cc7c3a302395 && 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.2.1.1 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.2 dune-configurator.3.22.2 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.2.5.2 mtime.2.1.0 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.1.0 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")) ) 2026-04-22 14:12.56: Waiting for resource in pool OCluster 2026-04-22 15:34.51: Waiting for worker… 2026-04-22 15:37.20: Got resource from pool OCluster Building on laodoke.caelum.ci.dev All commits already cached HEAD is now at 1fb0815 Merge pull request #32 from talex5/release (from ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b) Unable to find image 'ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b' locally docker.io/ocaml/opam@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b: Pulling from ocaml/opam 689b91d88a0f: Pulling fs layer 4e71de5e5d62: Pulling fs layer ebacb4dcb106: Pulling fs layer e54a581ed4fe: Pulling fs layer 689b91d88a0f: Waiting 4e71de5e5d62: Waiting ebacb4dcb106: Waiting 31c8da56d6c5: Pulling fs layer e54a581ed4fe: Waiting 78c5ccb5f898: 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b1bdbb688505: Pull complete a32fe70ebf8b: Pull complete c8a281298210: Pull complete c3aa8e81a32f: Pull complete e3c4f2c16d28: Pull complete 0691d9999d93: Pull complete e65256d8aa45: Pull complete cf0d291468bf: Pull complete Digest: sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b Status: Downloaded newer image for ocaml/opam@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b 2026-04-22 15:37.21 ---> using "a06438aa566b1a049d3c7f3592a97d1d542968d81a3b125c496e6979e82c3753" from cache /: (comment ubuntu-24.04-5.4_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")) 2026-04-22 15:37.21 ---> using "c2b2360ef99f72899407b49dd086bb8647a07219c731395851adaf9da76ebc22" 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 15:37.21 ---> using "b5f92c54ac9e0bb36cf513f47b75a50818a7b9cd0b304784316918bc86e321e8" from cache /src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) Linux 6.8.0-106-generic The OCaml toplevel, version 5.4.1 2.5.0 2026-04-22 15:37.21 ---> using "6dcd95a2cd00bae4736d988819170a2206558fe7fede2c0ce0afe161d3bc3ff5" from cache /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-04-22 15:37.21 ---> using "622547fce7a62120860246a1c49c10aaf61fb8918ad64525eab71906d89383a5" 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 15:37.21 ---> using "f9ef65207d0b0fcb51df87f09982ffcf11713444ce26007abe6db5ca9873b0c9" from cache /src: (copy (src lwt_eio.opam) (dst ./)) 2026-04-22 15:37.21 ---> saved as "7f5af6d68e063760767feb58ac8618cd77f5cb8c4c601d0aa4c9e3139c340d21" /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) 2026-04-22 15:37.25 ---> saved as "553bf43335dc45512586e79fba9ae315b7c976850559c6db97cc17907adf7a15" /src: (run (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-04-22 15:37.26 ---> saved as "1e15b45e5b60a261bd3004d3a4092ef0c8c090528c975f4f30fc6cfe0120571c" /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.2.1.1 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.2 dune-configurator.3.22.2 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.2.5.2 mtime.2.1.0 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.1.0 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 noble InRelease - Get:2 http://archive.ubuntu.com/ubuntu noble-updates InRelease [126 kB] - Get:3 http://archive.ubuntu.com/ubuntu noble-backports InRelease [126 kB] - Get:4 http://security.ubuntu.com/ubuntu noble-security InRelease [126 kB] - Get:5 http://archive.ubuntu.com/ubuntu noble-updates/multiverse amd64 Packages [38.0 kB] - Get:6 http://archive.ubuntu.com/ubuntu noble-updates/restricted amd64 Packages [3658 kB] - Get:7 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages [2354 kB] - Get:8 http://archive.ubuntu.com/ubuntu noble-updates/universe amd64 Packages [2141 kB] - Get:9 http://archive.ubuntu.com/ubuntu noble-backports/multiverse amd64 Packages [671 B] - Get:10 http://archive.ubuntu.com/ubuntu noble-backports/main amd64 Packages [49.0 kB] - Get:11 http://archive.ubuntu.com/ubuntu noble-backports/universe amd64 Packages [35.6 kB] - Get:12 http://security.ubuntu.com/ubuntu noble-security/universe amd64 Packages [1498 kB] - Get:13 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages [1981 kB] - Get:14 http://security.ubuntu.com/ubuntu noble-security/restricted amd64 Packages [3479 kB] - Get:15 http://security.ubuntu.com/ubuntu noble-security/multiverse amd64 Packages [34.2 kB] - Fetched 15.6 MB in 2s (7464 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 5.4.1). [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 15:37.53 ---> saved as "d1eeeff271eca7ff580e1f328f3b53564db5fc5d91a7917fd0927872fc44c4c0" /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 35 packages - install astring 0.8.5 - install base-bytes base - install bigstringaf 0.10.0 - install camlp-streams 5.0.1 - install cmdliner 2.1.1 - install cppo 1.8.0 - install csexp 1.5.2 - install cstruct 6.2.0 - install domain-local-await 1.0.1 - install dune 3.22.2 - install dune-configurator 3.22.2 - 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 2.5.2 - install mtime 2.1.0 - install ocaml-version 4.1.0 - 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 cmdliner.2.1.1 (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 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.2.5.2 (cached) -> retrieved mtime.2.1.0 (cached) -> retrieved ocaml-version.4.1.0 (cached) -> retrieved ocamlfind.1.9.8 (cached) -> retrieved ocamlbuild.0.16.1 (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 uring.2.7.0 (cached) -> retrieved dune.3.22.2, dune-configurator.3.22.2 (cached) -> installed cmdliner.2.1.1 -> 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 mtime.2.1.0 -> installed fmt.0.11.0 -> installed astring.0.8.5 -> installed dune.3.22.2 -> 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.4.1.0 -> installed optint.0.3.0 -> installed psq.0.2.1 -> installed result.1.5 -> installed thread-table.1.0.0 -> installed cppo.1.8.0 -> installed re.1.14.0 -> installed domain-local-await.1.0.1 -> installed ocplib-endian.1.2 -> installed dune-configurator.3.22.2 -> installed bigstringaf.0.10.0 -> installed iomux.0.4 -> installed uring.2.7.0 -> installed eio.1.3 -> installed eio_linux.1.3 -> installed lwt.6.1.1 -> installed eio_posix.1.3 -> installed eio_main.1.3 -> installed logs.0.10.0 -> installed mdx.2.5.2 Done. # To update the current shell environment, run: eval $(opam env) 2026-04-22 15:41.19 ---> saved as "6c2e344f92ea402b97d08962ec59e53e910a36a067943b425f6bb82d27f32cd5" /src: (copy (src .) (dst /src)) 2026-04-22 15:41.20 ---> saved as "d742408d7c76d714a0d95983d20cb8273f03878f6ccccd821649827e95cc9131" /src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build")) 2026-04-22 15:41.32 ---> saved as "f52aadc5cb4448654fbbe2592f1fdb50b85a16e73c28384dc4e91ab6bf634439" Job succeeded 2026-04-22 15:41.32: Job succeeded