Getting StartedDocumentation
Organisationsocaml-multicoreeio0a6937 ()windows-server-mingw-ltsc2025-5.4_opam-2.5

windows-server-mingw-ltsc2025-5.4_opam-2.5

Link Copied
Code Copied

Logs

Show raw logs
2026-05-13 18:38.13: New job: test ocaml-multicore/eio https://github.com/ocaml-multicore/eio.git#refs/pull/839/head (0a69373e9b351350f7c993eae1d47a33d802278d) (windows-x86_64:windows-server-mingw-ltsc2025-5.4_opam-2.5)
Base: ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:c4fc1f5b2bc9daafb540c1a38944299d245c950befaa382a751ccc4c6306000d
Opam project build


To reproduce locally:


git clone --recursive "https://github.com/ocaml-multicore/eio.git" && cd "eio" && git fetch origin "refs/pull/839/head" && git reset --hard 0a69373e
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:c4fc1f5b2bc9daafb540c1a38944299d245c950befaa382a751ccc4c6306000d
# 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 a4f153d7481c469b20f3b1064338d6a21abcb832 || git fetch origin master) && git reset -q --hard a4f153d7481c469b20f3b1064338d6a21abcb832 && 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.3.23.0 dune-configurator.3.23.0 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


2026-05-13 18:38.13: Using cache hint "ocaml-multicore/eio-ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:c4fc1f5b2bc9daafb540c1a38944299d245c950befaa382a751ccc4c6306000d-windows-server-mingw-ltsc2025-5.4_opam-2.5-746ea7934404b240bcb1253ac03b9011"
2026-05-13 18:38.13: Using OBuilder spec:
((from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:c4fc1f5b2bc9daafb540c1a38944299d245c950befaa382a751ccc4c6306000d)
(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 a4f153d7481c469b20f3b1064338d6a21abcb832 || git fetch origin master) && git reset -q --hard a4f153d7481c469b20f3b1064338d6a21abcb832 && 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.3.23.0 dune-configurator.3.23.0 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"))
)


2026-05-13 18:38.13: Waiting for resource in pool OCluster
2026-05-13 18:38.13: Waiting for worker…
2026-05-13 18:38.13: Got resource from pool OCluster
Building on ltsc2025-1
HEAD is now at d79c08a Add missing_ok to Eio.Path.unlink (#828)
HEAD is now at 0a69373 Update for new Uring.Res API


(from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:c4fc1f5b2bc9daafb540c1a38944299d245c950befaa382a751ccc4c6306000d)
2026-05-13 18:38.34 ---> using "ec981fc5aa88c4d81ed6944b947998a3582ceda5dccad31763847b59253ba21d" from cache


C:/: (comment windows-server-mingw-ltsc2025-5.4_opam-2.5)


C:/: (user (uid 1000) (gid 1000))


C:/: (env CLICOLOR_FORCE 1)


C:/: (env OPAMCOLOR always)


C:/: (run (shell "ln -f /usr/local/bin/opam-2.5 /usr/local/bin/opam"))
2026-05-13 18:38.34 ---> using "c53a822b6ae964c9af78f3a9c0a56550e5cef6c7d7355f71342bf74ae4d64c86" from cache


C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache")))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e a4f153d7481c469b20f3b1064338d6a21abcb832 || git fetch origin master) && git reset -q --hard a4f153d7481c469b20f3b1064338d6a21abcb832 && git log --no-decorate -n1 --oneline"))
ctr: failed to load CNI config file C:\Program Files\containerd\cni\conf\0-containerd-nat.conf: error parsing configuration: unexpected end of JSON input: invalid cni config
"C:\cygwin64\bin\bash.exe" "-lc" "cd ~/opam-repository && (git cat-file -e a4f153d7481c469b20f3b1064338d6a21abcb832 || git fetch origin master) && git reset -q --hard a4f153d7481c469b20f3b1064338d6a21abcb832 && git log --no-decorate -n1 --oneline" failed with exit status 1
2026-05-13 18:38.47: Job failed: Failed: Build failed