2026-04-03 12:25.38: New job: test ocaml-multicore/lwt_eio https://github.com/ocaml-multicore/lwt_eio.git#refs/heads/master (aeced087ef3d7321938db12d27327eab69d972af) (linux-x86_64:debian-13-5.4+flambda_opam-2.5) Base: ocaml/opam:debian-13-ocaml-5.4-flambda@sha256:7c0891fd8beae10290a2658a0474b5895aff790d4909224a497eb8e69cd96c1d 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 aeced087 cat > Dockerfile <<'END-OF-DOCKERFILE' FROM ocaml/opam:debian-13-ocaml-5.4-flambda@sha256:7c0891fd8beae10290a2658a0474b5895aff790d4909224a497eb8e69cd96c1d # debian-13-5.4+flambda_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 d06cfb1853afceb1dc127f88edaac3f8110bf6cc || git fetch origin master) && git reset -q --hard d06cfb1853afceb1dc127f88edaac3f8110bf6cc && 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.3.22.1 dune-configurator.3.22.1 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.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-variants.5.4.0+options 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 2026-04-03 12:25.38: Using cache hint "ocaml-multicore/lwt_eio-ocaml/opam:debian-13-ocaml-5.4-flambda@sha256:7c0891fd8beae10290a2658a0474b5895aff790d4909224a497eb8e69cd96c1d-debian-13-5.4+flambda_opam-2.5-e95d32b71163528d64939dd0187e1c3b" 2026-04-03 12:25.38: Using OBuilder spec: ((from ocaml/opam:debian-13-ocaml-5.4-flambda@sha256:7c0891fd8beae10290a2658a0474b5895aff790d4909224a497eb8e69cd96c1d) (comment debian-13-5.4+flambda_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 d06cfb1853afceb1dc127f88edaac3f8110bf6cc || git fetch origin master) && git reset -q --hard d06cfb1853afceb1dc127f88edaac3f8110bf6cc && 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.3.22.1 dune-configurator.3.22.1 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.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-variants.5.4.0+options 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")) ) 2026-04-03 12:25.38: Waiting for resource in pool OCluster 2026-04-03 12:25.38: Waiting for worker… 2026-04-03 12:25.54: Got resource from pool OCluster Building on eumache.caelum.ci.dev All commits already cached HEAD is now at aeced08 Merge pull request #31 from raphael-proust/lwt6-compat (from ocaml/opam:debian-13-ocaml-5.4-flambda@sha256:7c0891fd8beae10290a2658a0474b5895aff790d4909224a497eb8e69cd96c1d) Unable to find image 'ocaml/opam:debian-13-ocaml-5.4-flambda@sha256:7c0891fd8beae10290a2658a0474b5895aff790d4909224a497eb8e69cd96c1d' locally docker.io/ocaml/opam@sha256:7c0891fd8beae10290a2658a0474b5895aff790d4909224a497eb8e69cd96c1d: Pulling from ocaml/opam 866771c43bf5: Already exists 818e60f19055: Already exists a9c0f9875679: Already exists 4d0bafe9c21a: Already exists 390882e3ca42: Already exists 7f1309deb748: Already exists f13f79cebbb2: Already exists 070b7978d10a: Already exists f19a9073eb91: Already exists 9ea5002679f1: Already exists 8de100742279: Already exists 3d2848b9e9b9: Already exists 1db328698e0d: Already exists 5d796fa05d62: Already exists 9fa356e32c0c: Already exists 1fdfcf40563a: Already exists 7dd154aa3301: Already exists 7dd154aa3301: Already exists eee873cd0e21: Already exists 0bcb9ce43efd: Already exists 2a5bee4c58bf: Already exists ee4d4af6aa39: Already exists 4f4fb700ef54: Already exists 92fcd944e0fc: Already exists ee316b311fc8: Already exists beccfc338b8c: Already exists fd1a0487aa63: Already exists cf80de5261c4: Already exists 26f67db28f96: Already exists bd0162c57841: Already exists 761d286b9f5b: Already exists f5fa4dd6859a: Already exists 342eddfc52b6: Already exists 9258164ba4dd: Already exists 7fe1d9cb7a52: Already exists efdfa63c5eeb: Already exists c3e218fac0fa: Already exists 30807e3466ba: Already exists dc1843a17021: Already exists 04f7fde3402b: Already exists f24f7e372a66: Already exists e58155485ae1: Already exists ecad3a150df4: Already exists 724301b9dc62: Already exists 70764287d038: Already exists 908c607c3d09: Already exists fc84b33f5066: Already exists f436c7c7837f: Already exists Digest: sha256:7c0891fd8beae10290a2658a0474b5895aff790d4909224a497eb8e69cd96c1d Status: Downloaded newer image for ocaml/opam@sha256:7c0891fd8beae10290a2658a0474b5895aff790d4909224a497eb8e69cd96c1d 2026-04-03 12:25.54 ---> using "b55e6c75cd3e8053866e4459977add5a75875074668e87228d5137df1d1d0c8a" from cache /: (comment debian-13-5.4+flambda_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")) 2026-04-03 12:25.54 ---> using "d4c2c0c8461e9c3383d6285052d701a8ab317fe832e447cd3dd38626dcc154c7" 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 2026-04-03 12:25.54 ---> using "113b7a0e8fbdf6ff2f463b8b2751bb4deb393bbe44ccb78164b217477640f8d9" from cache /src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) Linux 5.15.0-173-generic The OCaml toplevel, version 5.4.0 2.5.0 2026-04-03 12:25.54 ---> using "2af332d58f4ecb4fc68528d5f48a466b8d805917068b0e2ad5cfdaa7cad2dff5" from cache /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-04-03 12:25.54 ---> using "ca628454b2b87260f34828cc9b7f413c5d250a6fc95415f734a90060ce2d5bbe" from cache /src: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "cd ~/opam-repository && (git cat-file -e d06cfb1853afceb1dc127f88edaac3f8110bf6cc || git fetch origin master) && git reset -q --hard d06cfb1853afceb1dc127f88edaac3f8110bf6cc && git log --no-decorate -n1 --oneline && opam update -u")) From https://github.com/ocaml/opam-repository * branch master -> FETCH_HEAD 4f056bfedf..d06cfb1853 master -> origin/master d06cfb1853 Merge pull request #29632 from shonfeder/release-dune-3.22.1 <><> 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) 2026-04-03 12:25.54 ---> using "bfc5917f25d3cf949371d78f8002460d670c28a642c3e7b4f8532bf9c6aa3075" from cache /src: (copy (src lwt_eio.opam) (dst ./)) 2026-04-03 12:25.54 ---> saved as "99ec11072eec07a8acedf28b85075dbd5af4a492e0cd0c1868eed4d389746cde" /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) 2026-04-03 12:25.57 ---> saved as "4b97b34e9a9136b41d0cc5cb2da56faccaeb480bd10884b1ab4e09da5329636b" /src: (run (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-04-03 12:25.57 ---> saved as "978908b053a73bb037da5f85692a090d35cb2f0d6334c664f2cade8676ca5152" /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.3.22.1 dune-configurator.3.22.1 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.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-variants.5.4.0+options 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 [119 kB] - Fetched 210 kB in 0s (913 kB/s) - Reading package lists... - <><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><> [lwt_eio.dev] synchronised (file:///src) [NOTE] Package ocaml-variants is already installed (current version is 5.4.0+options). [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 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) 2026-04-03 12:26.19 ---> saved as "44e493c99751282397b790ba8c949664d0d8e9fe6812f308b718557499a0dd62" /src: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "opam install $DEPS")) [NOTE] Package ocaml-variants is already installed (current version is 5.4.0+options). [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 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 3.22.1 - install dune-configurator 3.22.1 - 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 lwt.6.1.1 (cached) -> retrieved eio.1.3, eio_linux.1.3, eio_main.1.3, eio_posix.1.3 (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 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.3.22.1, dune-configurator.3.22.1 (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.3.22.1 -> installed lwt-dllist.1.1.0 -> installed result.1.5 -> installed optint.0.3.0 -> installed csexp.1.5.2 -> installed camlp-streams.5.0.1 -> installed cstruct.6.2.0 -> installed ocaml-version.4.0.4 -> installed psq.0.2.1 -> installed thread-table.1.0.0 -> installed domain-local-await.1.0.1 -> installed re.1.14.0 -> installed cppo.1.8.0 -> installed ocplib-endian.1.2 -> installed dune-configurator.3.22.1 -> 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.2.5.2 Done. # To update the current shell environment, run: eval $(opam env) 2026-04-03 12:29.57 ---> saved as "175a9cc51f300048a83e7ebdbd6df837d02ecd0fd6fb6bcf17a83e019303b5e7" /src: (copy (src .) (dst /src)) 2026-04-03 12:29.57 ---> saved as "693753a9ffbb0d7d1700d51231cc937fa607f53e2560709223ef6faa4c53e56f" /src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build")) 2026-04-03 12:30.10 ---> saved as "cb7cc2b48d4c395510de9dd8ae57a8657b4292a669edee76d3155bc56e357ee3" Job succeeded 2026-04-03 12:30.10: Job succeeded