2026-04-16 16:38.19: New job: test ocaml-multicore/lwt_eio https://github.com/ocaml-multicore/lwt_eio.git#refs/heads/master (1fb0815d20827bc3e336b5410fbb0d49b36f5334) (linux-x86_64:debian-13-5.4_opam-2.5) Base: ocaml/opam:debian-13-ocaml-5.4@sha256:a2351f39c384380c6780f31063128be8234e54192c0e563f1aa1045994c21553 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:debian-13-ocaml-5.4@sha256:a2351f39c384380c6780f31063128be8234e54192c0e563f1aa1045994c21553 # debian-13-5.4_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 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 || git fetch origin master) && git reset -q --hard 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 && 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.3.22.2 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.4.0.4 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 2026-04-16 16:38.20: Using cache hint "ocaml-multicore/lwt_eio-ocaml/opam:debian-13-ocaml-5.4@sha256:a2351f39c384380c6780f31063128be8234e54192c0e563f1aa1045994c21553-debian-13-5.4_opam-2.5-43c7cf53d6fa2e8b773af2deef825870" 2026-04-16 16:38.20: Using OBuilder spec: ((from ocaml/opam:debian-13-ocaml-5.4@sha256:a2351f39c384380c6780f31063128be8234e54192c0e563f1aa1045994c21553) (comment debian-13-5.4_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 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 || git fetch origin master) && git reset -q --hard 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 && 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.3.22.2 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.4.0.4 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")) ) 2026-04-16 16:38.20: Waiting for resource in pool OCluster 2026-04-16 18:30.20: Waiting for worker… 2026-04-16 18:35.38: Got resource from pool OCluster Building on asteria.caelum.ci.dev All commits already cached HEAD is now at 1fb0815 Merge pull request #32 from talex5/release (from ocaml/opam:debian-13-ocaml-5.4@sha256:a2351f39c384380c6780f31063128be8234e54192c0e563f1aa1045994c21553) Unable to find image 'ocaml/opam:debian-13-ocaml-5.4@sha256:a2351f39c384380c6780f31063128be8234e54192c0e563f1aa1045994c21553' locally docker.io/ocaml/opam@sha256:a2351f39c384380c6780f31063128be8234e54192c0e563f1aa1045994c21553: Pulling from ocaml/opam a7730063fcfe: Already exists 1a27fd2181de: Already exists c29591c91388: Already exists 356a64daa753: Already exists ac02f8f2062b: Already exists aaa2f390e4c8: Already exists b668811757f6: Already exists 32fd4e1a774f: Already exists b1d486fb8fdf: Already exists cf8a2024f299: Already exists 8c4a5dac67c3: Already exists 6adfe24d7b40: Already exists dccd6e3c0589: Already exists 2ee4bcb55cd4: Already exists 2dc3b58478d7: Already exists daf15e5c44c6: Already exists 564e978a8088: Already exists 564e978a8088: Already exists 25a652a8c456: Already exists b3bfea7bff3f: Already exists a00f2937f570: Already exists 78bd1737ebff: Already exists 4f4fb700ef54: Already exists 4291a055edd7: Already exists 3c2b2836d59a: Already exists 7b3e96544a52: Already exists c72503effb14: Already exists bca08df11a10: Already exists 2ab0829b2daf: Already exists 1d246d4da211: Already exists a09cb4870027: Already exists 2ce07b4fe7c0: Already exists 6b96f28d505e: Already exists b6ad36bba9bf: Already exists 56d62791a0f9: Already exists 4d60780055d1: Already exists 43f57a7c44cb: Already exists f21057dc4e85: Already exists e0d2ca1300ed: Already exists 9da2f7598f8e: Already exists cb569bb28593: Already exists 3eb150be10c9: Pulling fs layer 98891dca730e: Pulling fs layer 9bfef0352459: Pulling fs layer 53e1dd510781: Pulling fs layer f5f97334791c: Pulling fs layer fb34779fdd95: Pulling fs layer dab4f83dc775: Pulling fs layer 53e1dd510781: Waiting f5f97334791c: Waiting fb34779fdd95: Waiting dab4f83dc775: Waiting 98891dca730e: Verifying Checksum 98891dca730e: Download complete 3eb150be10c9: Verifying Checksum 3eb150be10c9: Download complete 3eb150be10c9: Pull complete 9bfef0352459: Verifying Checksum 9bfef0352459: Download complete 98891dca730e: Pull complete 9bfef0352459: Pull complete f5f97334791c: Verifying Checksum f5f97334791c: Download complete fb34779fdd95: Verifying Checksum fb34779fdd95: Download complete dab4f83dc775: Verifying Checksum dab4f83dc775: Download complete 53e1dd510781: Verifying Checksum 53e1dd510781: Download complete 53e1dd510781: Pull complete f5f97334791c: Pull complete fb34779fdd95: Pull complete dab4f83dc775: Pull complete Digest: sha256:a2351f39c384380c6780f31063128be8234e54192c0e563f1aa1045994c21553 Status: Downloaded newer image for ocaml/opam@sha256:a2351f39c384380c6780f31063128be8234e54192c0e563f1aa1045994c21553 2026-04-16 18:35.57 ---> using "1e88523a5b962a0274c47ded0e9a00831037c0e0a2873dbf27f3108da26aca5f" from cache /: (comment debian-13-5.4_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")) 2026-04-16 18:35.59 ---> using "db2b098dd6dd8a6c4e166adb4a21508ff7426847fc7f4e31c0e36fee2ea9d20f" 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 71 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=71 --global Format upgrade done. <><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><> [default] Initialised 2026-04-16 18:36.01 ---> using "47073b37c5907371e84463f79e22016f078de6c499d8383a287f3cdaa33ba11e" 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 2026-04-16 18:36.09 ---> using "83bf668a68f3f3d56155f4af231f745516bb0be7ec47ac46c00971fd7fd25f59" from cache /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-04-16 18:36.10 ---> using "3cbb93b3f79dd96ea5cbc3bdd8f4cba6f75a2d32fb6e0ab91760543fd1f31bf2" from cache /src: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "cd ~/opam-repository && (git cat-file -e 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 || git fetch origin master) && git reset -q --hard 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 && git log --no-decorate -n1 --oneline && opam update -u")) From https://github.com/ocaml/opam-repository * branch master -> FETCH_HEAD 42844088d7..0b0acbee05 master -> origin/master 5f7bb1a6e6 Merge pull request #29704 from shonfeder/release-dune-3.22.2 <><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><> [default] synchronised from git+file:///home/opam/opam-repository 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) 2026-04-16 18:36.12 ---> using "0586d967f531f12411923824865d96e7af5200d1a7948b862f2534db63958f90" from cache /src: (copy (src lwt_eio.opam) (dst ./)) 2026-04-16 18:36.32 ---> saved as "f2c22ec492c048c9e5c5cb88ee390904a78b60fcc3b4c4d100bae288f1c4879d" /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) 2026-04-16 18:37.06 ---> saved as "378be32ddb1043244af6f04c139597bf6c5f4dfd663785a4d7d6e602e673dc6b" /src: (run (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-04-16 18:37.34 ---> saved as "7648d7b949a17a1067c753aae7b344cb887902a20a3949595f76589a36edf140" /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.3.22.2 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.4.0.4 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://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 [123 kB] - Fetched 213 kB in 0s (1583 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) 2026-04-16 18:38.27 ---> saved as "f3fee91aad2d4b0bac31b3062199828925a821fa6e1ba7e7de5426b13d2e28cc" /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 2.1.0 - install cppo 1.8.0 - install csexp 1.5.2 - install cstruct 6.2.0 - install domain-local-await 1.0.1 - install dune 3.22.2 - 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 4.0.4 - 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 cmdliner.2.1.0 (cached) -> retrieved csexp.1.5.2 (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.2.5.2 (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 dune.3.22.2, dune-configurator.3.22.2 (cached) -> retrieved thread-table.1.0.0 (cached) -> retrieved topkg.1.1.1 (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.3.22.2 -> 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.3.22.2 -> 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.2.5.2 Done. # To update the current shell environment, run: eval $(opam env) 2026-04-16 18:39.30 ---> saved as "341aa3cc3e72f41fad684c75fc34cb39a1d0e8063e9fb243d26ccf39fb12f6fa" /src: (copy (src .) (dst /src)) 2026-04-16 18:39.53 ---> saved as "1a1f7e9cb20dca34a41fed09290fa4585e27c412f986c03ab1971e2cc80f4d8b" /src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build")) 2026-04-16 18:40.22 ---> saved as "5b995c871751603b10072f6b653767b8e7dffa92487572c0947523bcb77d614b" Job succeeded 2026-04-16 18:40.37: Job succeeded