2026-05-28 15:36.52: New job: test ocaml-multicore/eio https://github.com/ocaml-multicore/eio.git#refs/heads/main (e4e36f3cd1f4b92b63e55d64ffb20313307b63e2) (windows-x86_64:windows-server-mingw-ltsc2025-5.4_opam-2.5) Base: ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:f6fe41e0b6593eabd31661c8378c0ce84b2bd17c34972fa807181a5dd876ff44 Opam project build To reproduce locally: git clone --recursive "https://github.com/ocaml-multicore/eio.git" -b "main" && cd "eio" && git reset --hard e4e36f3c cat > Dockerfile <<'END-OF-DOCKERFILE' FROM ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:f6fe41e0b6593eabd31661c8378c0ce84b2bd17c34972fa807181a5dd876ff44 # windows-server-mingw-ltsc2025-5.4_opam-2.5 USER 1000:1000 ENV CLICOLOR_FORCE="1" ENV OPAMCOLOR="always" RUN ln -f /usr/local/bin/opam-2.5 /usr/local/bin/opam RUN cd ~/opam-repository && (git cat-file -e c180e1630960e0dbb8e30c22b3de89113eb5cc93 || git fetch origin master) && git reset -q --hard c180e1630960e0dbb8e30c22b3de89113eb5cc93 && git log --no-decorate -n1 --oneline RUN opam init --reinit -ni RUN uname -rs && opam exec -- ocaml -version && opam --version RUN opam update -u COPY --chown=1000:1000 eio_windows.opam eio_posix.opam eio_main.opam eio_linux.opam eio.opam /cygwin64/home/opam/src/./ RUN opam pin add -yn eio_windows.dev '/cygwin64/home/opam/src/./' && \ opam pin add -yn eio_posix.dev '/cygwin64/home/opam/src/./' && \ opam pin add -yn eio_main.dev '/cygwin64/home/opam/src/./' && \ opam pin add -yn eio_linux.dev '/cygwin64/home/opam/src/./' && \ opam pin add -yn eio.dev '/cygwin64/home/opam/src/./' RUN echo '(lang dune 3.0)' > '/home/opam/src/./dune-project' ENV DEPS="afl-persistent.1.4 alcotest.1.9.1 arch-x86_64.1 astring.0.8.5 backoff.0.1.1 base-bigarray.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 conf-bash.1 conf-mingw-w64-gcc-x86_64.1 containers.3.18 cppo.1.8.0 crowbar.0.2.2 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 domain-local-timeout.1.0.1 dscheck.0.5.0 dune.3.23.1 dune-configurator.3.23.1 either.1.0.0 flexdll.0.44 fmt.0.11.0 hmap.0.8.1 host-arch-x86_64.1 host-system-mingw.1 iomux.0.4 kcas.0.7.0 logs.0.10.0 lwt-dllist.1.1.0 mdx.2.5.2 mingw-w64-shims.0.2.0 mtime.2.1.0 multicore-magic.2.3.2 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-env-mingw64.1 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.1.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 optint.0.3.0 oseq.0.5.1 psq.0.2.1 re.1.14.0 result.1.5 seq.base stdlib-shims.0.3.0 system-mingw.1 thread-table.1.0.0 topkg.1.1.1 tsort.2.2.0 uutf.1.0.4 yojson.3.0.0" ENV CI="true" ENV OCAMLCI="true" RUN opam update --depexts && opam install --cli=2.5 --depext-only -y eio_windows.dev eio_posix.dev eio_main.dev eio.dev $DEPS RUN opam install $DEPS COPY --chown=1000:1000 . /cygwin64/home/opam/src RUN cd /home/opam/src && opam exec -- dune build --only-packages=eio_windows,eio_posix,eio_main,eio @install @check @runtest && rm -rf _build END-OF-DOCKERFILE docker build . END-REPRO-BLOCK 2026-05-28 15:36.52: Using cache hint "ocaml-multicore/eio-ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:f6fe41e0b6593eabd31661c8378c0ce84b2bd17c34972fa807181a5dd876ff44-windows-server-mingw-ltsc2025-5.4_opam-2.5-627e3ed692b4a7a8535ac71b418f7f52" 2026-05-28 15:36.52: Using OBuilder spec: ((from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:f6fe41e0b6593eabd31661c8378c0ce84b2bd17c34972fa807181a5dd876ff44) (comment windows-server-mingw-ltsc2025-5.4_opam-2.5) (user (uid 1000) (gid 1000)) (env CLICOLOR_FORCE 1) (env OPAMCOLOR always) (run (shell "ln -f /usr/local/bin/opam-2.5 /usr/local/bin/opam")) (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache"))) (network host) (shell "cd ~/opam-repository && (git cat-file -e c180e1630960e0dbb8e30c22b3de89113eb5cc93 || git fetch origin master) && git reset -q --hard c180e1630960e0dbb8e30c22b3de89113eb5cc93 && git log --no-decorate -n1 --oneline")) (run (shell "opam init --reinit -ni")) (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache"))) (network host) (shell "opam update -u")) (copy (src eio_windows.opam eio_posix.opam eio_main.opam eio_linux.opam eio.opam) (dst /cygwin64/home/opam/src/./)) (run (network host) (shell "opam pin add -yn eio_windows.dev '/cygwin64/home/opam/src/./' && \ \nopam pin add -yn eio_posix.dev '/cygwin64/home/opam/src/./' && \ \nopam pin add -yn eio_main.dev '/cygwin64/home/opam/src/./' && \ \nopam pin add -yn eio_linux.dev '/cygwin64/home/opam/src/./' && \ \nopam pin add -yn eio.dev '/cygwin64/home/opam/src/./'")) (run (shell "echo '(lang dune 3.0)' > '/home/opam/src/./dune-project'")) (env DEPS "afl-persistent.1.4 alcotest.1.9.1 arch-x86_64.1 astring.0.8.5 backoff.0.1.1 base-bigarray.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 conf-bash.1 conf-mingw-w64-gcc-x86_64.1 containers.3.18 cppo.1.8.0 crowbar.0.2.2 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 domain-local-timeout.1.0.1 dscheck.0.5.0 dune.3.23.1 dune-configurator.3.23.1 either.1.0.0 flexdll.0.44 fmt.0.11.0 hmap.0.8.1 host-arch-x86_64.1 host-system-mingw.1 iomux.0.4 kcas.0.7.0 logs.0.10.0 lwt-dllist.1.1.0 mdx.2.5.2 mingw-w64-shims.0.2.0 mtime.2.1.0 multicore-magic.2.3.2 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-env-mingw64.1 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.1.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 optint.0.3.0 oseq.0.5.1 psq.0.2.1 re.1.14.0 result.1.5 seq.base stdlib-shims.0.3.0 system-mingw.1 thread-table.1.0.0 topkg.1.1.1 tsort.2.2.0 uutf.1.0.4 yojson.3.0.0") (env CI true) (env OCAMLCI true) (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache"))) (network host) (shell "opam update --depexts && opam install --cli=2.5 --depext-only -y eio_windows.dev eio_posix.dev eio_main.dev eio.dev $DEPS")) (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache"))) (network host) (shell "opam install $DEPS")) (copy (src .) (dst /cygwin64/home/opam/src)) (run (shell "cd /home/opam/src && opam exec -- dune build --only-packages=eio_windows,eio_posix,eio_main,eio @install @check @runtest && rm -rf _build")) ) 2026-05-28 15:36.52: Waiting for resource in pool OCluster 2026-05-28 17:51.37: Waiting for worker… 2026-05-28 19:49.07: Got resource from pool OCluster Building on ltsc2025-1 All commits already cached HEAD is now at e4e36f3 Merge pull request #843 from talex5/cmsg-cloexec (from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:f6fe41e0b6593eabd31661c8378c0ce84b2bd17c34972fa807181a5dd876ff44) Failure("Failed to commit snapshot obuilder-base-8dedeb6fe8eb017964156cd7ddecbb111634568017c7ce6ccc20b0df59f05597: \"ctr\" \"snapshot\" \"commit\" \"obuilder-base-8dedeb6fe8eb017964156cd7ddecbb111634568017c7ce6ccc20b0df59f05597-committed\" \"obuilder-base-8dedeb6fe8eb017964156cd7ddecbb111634568017c7ce6ccc20b0df59f05597\" failed with exit status 1") 2026-05-28 19:49.47: Job failed: Failed: Build failed