2026-02-27 11:58.42: New job: test ocaml-multicore/kcas https://github.com/ocaml-multicore/kcas.git#refs/heads/main (7a83eb3d1900aeefde42a27c2af60e6d8b7b360e) (windows-x86_64:windows-server-mingw-ltsc2025-5.4_opam-2.5)Base: ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:fedecf8e7810af08d566e6e877bd4ed7ad4c107b8cc32164f71632fffceb8869Opam project buildTo reproduce locally:git clone --recursive "https://github.com/ocaml-multicore/kcas.git" -b "main" && cd "kcas" && git reset --hard 7a83eb3dcat > Dockerfile <<'END-OF-DOCKERFILE'FROM ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:fedecf8e7810af08d566e6e877bd4ed7ad4c107b8cc32164f71632fffceb8869# windows-server-mingw-ltsc2025-5.4_opam-2.5USER 1000:1000ENV CLICOLOR_FORCE="1"ENV OPAMCOLOR="always"RUN ln -f /usr/local/bin/opam-2.5 /usr/local/bin/opamRUN opam init --reinit -niRUN uname -rs && opam exec -- ocaml -version && opam --versionRUN cd ~/opam-repository && (git cat-file -e 302e116c4009da2f5a31c350a57c8b3c9b27289e || git fetch origin master) && git reset -q --hard 302e116c4009da2f5a31c350a57c8b3c9b27289e && git log --no-decorate -n1 --oneline && opam update -uCOPY --chown=1000:1000 kcas_data.opam kcas.opam /home/opam/src/./RUN opam pin add -yn kcas_data.dev '/home/opam/src/./' && \opam pin add -yn kcas.dev '/home/opam/src/./'RUN echo '(lang dune 3.0)' > '/home/opam/src/./dune-project'ENV DEPS="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 camlp-streams.5.0.1 cmdliner.2.1.0 conf-mingw-w64-gcc-x86_64.1 cppo.1.8.0 csexp.1.5.2 domain-local-await.1.0.1 domain-local-timeout.1.0.1 domain_shims.0.1.0 dune.3.21.1 flexdll.0.44 fmt.0.11.0 host-arch-x86_64.1 host-system-mingw.1 logs.0.10.0 mdx.2.5.1 mingw-w64-shims.0.2.0 mtime.2.1.0 multicore-bench.0.1.7 multicore-magic.2.3.2 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-env-mingw64.1 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.3 ocamlbuild.0.16.1 ocamlfind.1.9.8 psq.0.2.1 qcheck-core.0.91 qcheck-multicoretests-util.0.10 qcheck-stm.0.10 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 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 kcas_data.dev kcas.dev $DEPSRUN opam install $DEPSCOPY --chown=1000:1000 . /home/opam/srcRUN cd /home/opam/src && opam exec -- dune build @install @check @runtest && rm -rf _buildEND-OF-DOCKERFILEdocker build .END-REPRO-BLOCK2026-02-27 11:58.42: Using cache hint "ocaml-multicore/kcas-ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:fedecf8e7810af08d566e6e877bd4ed7ad4c107b8cc32164f71632fffceb8869-windows-server-mingw-ltsc2025-5.4_opam-2.5-e57a52b800188f4826872b5ac828790d"2026-02-27 11:58.42: Using OBuilder spec:((from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:fedecf8e7810af08d566e6e877bd4ed7ad4c107b8cc32164f71632fffceb8869)(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 (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 "cd ~/opam-repository && (git cat-file -e 302e116c4009da2f5a31c350a57c8b3c9b27289e || git fetch origin master) && git reset -q --hard 302e116c4009da2f5a31c350a57c8b3c9b27289e && git log --no-decorate -n1 --oneline && opam update -u"))(copy (src kcas_data.opam kcas.opam) (dst /home/opam/src/./))(run (network host)(shell "opam pin add -yn kcas_data.dev '/home/opam/src/./' && \\nopam pin add -yn kcas.dev '/home/opam/src/./'"))(run (network host)(shell "echo '(lang dune 3.0)' > '/home/opam/src/./dune-project'"))(env DEPS "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 camlp-streams.5.0.1 cmdliner.2.1.0 conf-mingw-w64-gcc-x86_64.1 cppo.1.8.0 csexp.1.5.2 domain-local-await.1.0.1 domain-local-timeout.1.0.1 domain_shims.0.1.0 dune.3.21.1 flexdll.0.44 fmt.0.11.0 host-arch-x86_64.1 host-system-mingw.1 logs.0.10.0 mdx.2.5.1 mingw-w64-shims.0.2.0 mtime.2.1.0 multicore-bench.0.1.7 multicore-magic.2.3.2 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-env-mingw64.1 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.3 ocamlbuild.0.16.1 ocamlfind.1.9.8 psq.0.2.1 qcheck-core.0.91 qcheck-multicoretests-util.0.10 qcheck-stm.0.10 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 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 kcas_data.dev kcas.dev $DEPS"))(run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache")))(network host)(shell "opam install $DEPS"))(copy (src .) (dst /home/opam/src))(run (shell "cd /home/opam/src && opam exec -- dune build @install @check @runtest && rm -rf _build")))2026-02-27 11:58.42: Waiting for resource in pool OCluster2026-02-27 11:58.42: Waiting for worker…2026-02-27 16:45.23: Got resource from pool OClusterBuilding on ltsc2025-1Initialized empty Git repository in C:/state/git/kcas.git-cbf061e658655f8b42c903a1e93e6fc6ed0528ae/.git/HEAD is now at 7a83eb3 Inline `Loc` ops and unroll(from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:fedecf8e7810af08d566e6e877bd4ed7ad4c107b8cc32164f71632fffceb8869)2026-02-27 16:45.39 ---> using "a21c3d6a5c8ade59b5718498d4946f2d30bc2f15b3081890bc8673cc20de69f7" from cacheC:/: (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"))2026-02-27 16:45.39 ---> using "ba707ce1f62b585e8ecb40306d921206316b14fded440e6c49f33aa7897cc9c7" from cacheC:/: (run (shell "opam init --reinit -ni"))No configuration file found, using built-in defaults.<><> Unix support infrastructure ><><><><><><><><><><><><><><><><><><><><><><><>opam and the OCaml ecosystem in general require various Unix tools in order to operate correctly. At present, this requires the installation of Cygwin to provide these tools.How should opam obtain Unix tools?> 1. Use tools found in PATH (Cygwin installation at C:\cygwin64)2. Automatically create an internal Cygwin installation that will be managed by opam (recommended)3. Use Cygwin installation found in C:\cygwin644. Use another existing Cygwin/MSYS2 installation5. Abort initialisation[1/2/3/4/5] 1Checking 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.<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>[default] Initialised2026-02-27 16:45.39 ---> using "dd67e9cc18682a923590cd564dd7cd6177b4afe1c25b1d53bacf8ae6b5b2364f" from cacheC:/: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))CYGWIN_NT-10.0-26100 3.6.6-1.x86_64The OCaml toplevel, version 5.4.02.5.02026-02-27 16:45.39 ---> using "c97059ecb6d76caa6ea35cf8e41cecaa775dc323c43ea7e5cc23418742ce7876" from cacheC:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache")))(network host)(shell "cd ~/opam-repository && (git cat-file -e 302e116c4009da2f5a31c350a57c8b3c9b27289e || git fetch origin master) && git reset -q --hard 302e116c4009da2f5a31c350a57c8b3c9b27289e && git log --no-decorate -n1 --oneline && opam update -u"))302e116c40 Merge pull request #29374 from shonfeder/release-dune-3.21.1<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>[default] synchronised from git+file://C:/cygwin64/home/opam/opam-repositoryAlready up-to-date.Nothing to do.# To update the current shell environment, run: eval $(opam env)2026-02-27 16:45.39 ---> using "a0d9e0d7c9d5b32fb7d724ee470675e47ec362564b5a242a8fabe787c66973e7" from cacheC:/: (copy (src kcas_data.opam kcas.opam) (dst /home/opam/src/./))2026-02-27 16:46.22 ---> saved as "798b3023bd9700d8c336a86e4777f5d4ed30deba22142e0ea198c9f6e9b12c8f"C:/: (run (network host)(shell "opam pin add -yn kcas_data.dev '/home/opam/src/./' && \\nopam pin add -yn kcas.dev '/home/opam/src/./'"))[kcas_data.dev] synchronised (file://C:/home/opam/src)kcas_data is now pinned to file://C:/home/opam/src (version dev)[kcas.dev] synchronised (file://C:/home/opam/src)kcas is now pinned to file://C:/home/opam/src (version dev)2026-02-27 16:48.28 ---> saved as "f316f2d9030de8af0776d4254a07d72914a2d03c67a9aca1dcc6c713e599e641"C:/: (run (network host)(shell "echo '(lang dune 3.0)' > '/home/opam/src/./dune-project'"))/usr/bin/bash: line 1: /home/opam/src/./dune-project: No such file or directory"C:\cygwin64\bin\bash.exe" "-lc" "echo '(lang dune 3.0)' > '/home/opam/src/./dune-project'" failed with exit status 12026-02-27 16:49.59: Job failed: Failed: Build failed