2026-03-19 08:05.00: New job: test MisterDA/windows-version https://github.com/MisterDA/windows-version.git#refs/heads/main (1994f53476c9203ee587ea28e421dc8d1cde74bf) (windows-x86_64:windows-server-mingw-ltsc2025-5.4_opam-2.5) Base: ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:fedecf8e7810af08d566e6e877bd4ed7ad4c107b8cc32164f71632fffceb8869 Opam project build To reproduce locally: git clone --recursive "https://github.com/MisterDA/windows-version.git" -b "main" && cd "windows-version" && git reset --hard 1994f534 cat > Dockerfile <<'END-OF-DOCKERFILE' FROM ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:fedecf8e7810af08d566e6e877bd4ed7ad4c107b8cc32164f71632fffceb8869 # 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 opam init --reinit -ni RUN uname -rs && opam exec -- ocaml -version && opam --version RUN cd ~/opam-repository && (git cat-file -e 9f189ca4f94fbb5f0045820bf3c4ffafb21145ef || git fetch origin master) && git reset -q --hard 9f189ca4f94fbb5f0045820bf3c4ffafb21145ef && git log --no-decorate -n1 --oneline && opam update -u COPY --chown=1000:1000 windows-version.opam /cygwin64/home/opam/src/./ RUN opam pin add -yn windows-version.dev '/cygwin64/home/opam/src/./' RUN echo '(lang dune 3.0)' > '/home/opam/src/./dune-project' ENV DEPS="arch-x86_64.1 astring.0.8.5 base.v0.17.3 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base conf-mingw-w64-gcc-x86_64.1 cppo.1.8.0 csexp.1.5.2 dune.3.22.0 dune-configurator.3.22.0 flexdll.0.44 fmt.0.11.0 host-arch-x86_64.1 host-system-mingw.1 mingw-w64-shims.0.2.0 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-env-mingw64.1 ocaml-options-vanilla.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ppx_derivers.1.2.1 ppx_deriving.6.1.1 ppx_sexp_conv.v0.17.1 ppxlib.0.37.0 ppxlib_jane.v0.17.4 sexplib0.v0.17.0 stdlib-shims.0.3.0 system-mingw.1 topkg.1.1.1" ENV CI="true" ENV OCAMLCI="true" RUN opam update --depexts && opam install --cli=2.5 --depext-only -y windows-version.dev $DEPS RUN opam install $DEPS COPY --chown=1000:1000 . /cygwin64/home/opam/src RUN cd /home/opam/src && opam exec -- dune build @install @check @runtest && rm -rf _build END-OF-DOCKERFILE docker build . END-REPRO-BLOCK 2026-03-19 08:05.00: Using cache hint "MisterDA/windows-version-ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:fedecf8e7810af08d566e6e877bd4ed7ad4c107b8cc32164f71632fffceb8869-windows-server-mingw-ltsc2025-5.4_opam-2.5-29e35b35ed5f23a1efeab442445b949d" 2026-03-19 08:05.00: 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 9f189ca4f94fbb5f0045820bf3c4ffafb21145ef || git fetch origin master) && git reset -q --hard 9f189ca4f94fbb5f0045820bf3c4ffafb21145ef && git log --no-decorate -n1 --oneline && opam update -u")) (copy (src windows-version.opam) (dst /cygwin64/home/opam/src/./)) (run (network host) (shell "opam pin add -yn windows-version.dev '/cygwin64/home/opam/src/./'")) (run (shell "echo '(lang dune 3.0)' > '/home/opam/src/./dune-project'")) (env DEPS "arch-x86_64.1 astring.0.8.5 base.v0.17.3 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base conf-mingw-w64-gcc-x86_64.1 cppo.1.8.0 csexp.1.5.2 dune.3.22.0 dune-configurator.3.22.0 flexdll.0.44 fmt.0.11.0 host-arch-x86_64.1 host-system-mingw.1 mingw-w64-shims.0.2.0 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-env-mingw64.1 ocaml-options-vanilla.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ppx_derivers.1.2.1 ppx_deriving.6.1.1 ppx_sexp_conv.v0.17.1 ppxlib.0.37.0 ppxlib_jane.v0.17.4 sexplib0.v0.17.0 stdlib-shims.0.3.0 system-mingw.1 topkg.1.1.1") (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 windows-version.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 @install @check @runtest && rm -rf _build")) ) 2026-03-19 08:05.00: Waiting for resource in pool OCluster 2026-03-19 10:00.00: Waiting for worker… 2026-03-19 21:12.15: Got resource from pool OCluster Building on ltsc2025-2 Initialized empty Git repository in C:/state/git/windows-version.git-8248092dec45a4591ed4d07421ecbcfbcf9b679d/.git/ HEAD is now at 1994f53 Initial import from ocaml-dockerfile (from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:fedecf8e7810af08d566e6e877bd4ed7ad4c107b8cc32164f71632fffceb8869) 2026-03-19 21:13.11 ---> using "a21c3d6a5c8ade59b5718498d4946f2d30bc2f15b3081890bc8673cc20de69f7" 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")) 2026-03-19 21:13.11 ---> using "ba707ce1f62b585e8ecb40306d921206316b14fded440e6c49f33aa7897cc9c7" from cache C:/: (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:\cygwin64 4. Use another existing Cygwin/MSYS2 installation 5. Abort initialisation [1/2/3/4/5] 1 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. <><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><> [default] Initialised 2026-03-19 21:13.11 ---> using "dd67e9cc18682a923590cd564dd7cd6177b4afe1c25b1d53bacf8ae6b5b2364f" from cache C:/: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) CYGWIN_NT-10.0-26100 3.6.6-1.x86_64 The OCaml toplevel, version 5.4.0 2.5.0 2026-03-19 21:13.11 ---> using "c97059ecb6d76caa6ea35cf8e41cecaa775dc323c43ea7e5cc23418742ce7876" from cache C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache"))) (network host) (shell "cd ~/opam-repository && (git cat-file -e 9f189ca4f94fbb5f0045820bf3c4ffafb21145ef || git fetch origin master) && git reset -q --hard 9f189ca4f94fbb5f0045820bf3c4ffafb21145ef && git log --no-decorate -n1 --oneline && opam update -u")) From https://github.com/ocaml/opam-repository * branch master -> FETCH_HEAD b820e8c25e..9f189ca4f9 master -> origin/master 9f189ca4f9 Merge pull request #29562 from shonfeder/release-dune-3.22.0 <><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><> [default] synchronised from git+file://C:/cygwin64/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) 2026-03-19 21:13.11 ---> using "ced7f83c95757ead588801f972f0887e8eaeeba3e8859b2fa40215950a6457f6" from cache C:/: (copy (src windows-version.opam) (dst /cygwin64/home/opam/src/./)) 2026-03-19 21:14.52 ---> saved as "82a493945f629358b5f7075a9d5b069cc155ca2ac13a2dd7646fa0ed76afd8a6" C:/: (run (network host) (shell "opam pin add -yn windows-version.dev '/cygwin64/home/opam/src/./'")) [NOTE] Package windows-version does not exist in opam repositories registered in the current switch. [windows-version.dev] synchronised (file://C:/cygwin64/home/opam/src) windows-version is now pinned to file://C:/cygwin64/home/opam/src (version dev) 2026-03-19 21:16.44 ---> saved as "1065b06a57b032864aadb7f702facff97854fb7acca211031e29f6b6eb874fc6" C:/: (run (shell "echo '(lang dune 3.0)' > '/home/opam/src/./dune-project'")) 2026-03-19 21:18.16 ---> saved as "84fc56fcd45d82a052909abb8fd112736ff6e06972ad9faf02823752c6756105" C:/: (env DEPS "arch-x86_64.1 astring.0.8.5 base.v0.17.3 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base conf-mingw-w64-gcc-x86_64.1 cppo.1.8.0 csexp.1.5.2 dune.3.22.0 dune-configurator.3.22.0 flexdll.0.44 fmt.0.11.0 host-arch-x86_64.1 host-system-mingw.1 mingw-w64-shims.0.2.0 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-env-mingw64.1 ocaml-options-vanilla.1 ocaml_intrinsics_kernel.v0.17.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ppx_derivers.1.2.1 ppx_deriving.6.1.1 ppx_sexp_conv.v0.17.1 ppxlib.0.37.0 ppxlib_jane.v0.17.4 sexplib0.v0.17.0 stdlib-shims.0.3.0 system-mingw.1 topkg.1.1.1") C:/: (env CI true) C:/: (env OCAMLCI true) C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache"))) (network host) (shell "opam update --depexts && opam install --cli=2.5 --depext-only -y windows-version.dev $DEPS")) <><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><> [windows-version.dev] synchronised (file://C:/cygwin64/home/opam/src) [NOTE] Package system-mingw is already installed (current version is 1). [NOTE] Package ocaml-options-vanilla is already installed (current version is 1). [NOTE] Package ocaml-env-mingw64 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 5.4.0). [NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.0). [NOTE] Package ocaml is already installed (current version is 5.4.0). [NOTE] Package mingw-w64-shims is already installed (current version is 0.2.0). [NOTE] Package host-system-mingw is already installed (current version is 1). [NOTE] Package host-arch-x86_64 is already installed (current version is 1). [NOTE] Package flexdll is already installed (current version is 0.44). [NOTE] Package conf-mingw-w64-gcc-x86_64 is already installed (current version is 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). [NOTE] Package arch-x86_64 is already installed (current version is 1). # To update the current shell environment, run: eval $(opam env) 2026-03-19 21:19.48 ---> saved as "2928883ca1d33a420daab7e13e95c290232e9d1332c7af51c5e78598616731b1" C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache"))) (network host) (shell "opam install $DEPS")) [NOTE] Package system-mingw is already installed (current version is 1). [NOTE] Package ocaml-options-vanilla is already installed (current version is 1). [NOTE] Package ocaml-env-mingw64 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 5.4.0). [NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.0). [NOTE] Package ocaml is already installed (current version is 5.4.0). [NOTE] Package mingw-w64-shims is already installed (current version is 0.2.0). [NOTE] Package host-system-mingw is already installed (current version is 1). [NOTE] Package host-arch-x86_64 is already installed (current version is 1). [NOTE] Package flexdll is already installed (current version is 0.44). [NOTE] Package conf-mingw-w64-gcc-x86_64 is already installed (current version is 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). [NOTE] Package arch-x86_64 is already installed (current version is 1). The following actions will be performed: === install 19 packages - install astring 0.8.5 - install base v0.17.3 - install cppo 1.8.0 - install csexp 1.5.2 - install dune 3.22.0 - install dune-configurator 3.22.0 - install fmt 0.11.0 - install ocaml-compiler-libs v0.17.0 - install ocaml_intrinsics_kernel v0.17.1 - install ocamlbuild 0.16.1 - install ocamlfind 1.9.8 - install ppx_derivers 1.2.1 - install ppx_deriving 6.1.1 - install ppx_sexp_conv v0.17.1 - install ppxlib 0.37.0 - install ppxlib_jane v0.17.4 - install sexplib0 v0.17.0 - install stdlib-shims 0.3.0 - install topkg 1.1.1 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> retrieved astring.0.8.5 (cached) -> retrieved base.v0.17.3 (cached) -> retrieved cppo.1.8.0 (cached) -> retrieved csexp.1.5.2 (cached) -> retrieved fmt.0.11.0 (cached) -> retrieved ocaml-compiler-libs.v0.17.0 (cached) -> retrieved ocaml_intrinsics_kernel.v0.17.1 (cached) -> retrieved ocamlbuild.0.16.1 (cached) -> retrieved ocamlfind.1.9.8 (cached) -> retrieved ppx_derivers.1.2.1 (cached) -> retrieved ppx_deriving.6.1.1 (cached) -> retrieved ppx_sexp_conv.v0.17.1 (cached) -> retrieved ppxlib_jane.v0.17.4 (cached) -> retrieved ppxlib.0.37.0 (cached) -> retrieved sexplib0.v0.17.0 (cached) -> retrieved stdlib-shims.0.3.0 (cached) -> retrieved topkg.1.1.1 (cached) -> retrieved dune.3.22.0, dune-configurator.3.22.0 (cached) -> installed ocamlbuild.0.16.1 [WARNING] .install file is missing .exe extension for src/findlib/ocamlfind [WARNING] .install file is missing .exe extension for src/findlib/ocamlfind_opt [WARNING] Automatically adding .exe to C:\opam\.opam\5.4\.opam-switch\build\ocamlfind.1.9.8\src\findlib\ocamlfind.exe [WARNING] Automatically adding .exe to C:\opam\.opam\5.4\.opam-switch\build\ocamlfind.1.9.8\src\findlib\ocamlfind_opt.exe [WARNING] C:\opam\.opam\5.4\bin\safe_camlp4 is a script; the command won't be available -> installed ocamlfind.1.9.8 -> installed topkg.1.1.1 -> installed fmt.0.11.0 -> installed astring.0.8.5 -> installed dune.3.22.0 -> installed ppx_derivers.1.2.1 -> installed csexp.1.5.2 -> installed cppo.1.8.0 -> installed ocaml-compiler-libs.v0.17.0 -> installed ocaml_intrinsics_kernel.v0.17.1 -> installed sexplib0.v0.17.0 -> installed stdlib-shims.0.3.0 -> installed dune-configurator.3.22.0 -> installed base.v0.17.3 -> installed ppxlib.0.37.0 -> installed ppxlib_jane.v0.17.4 -> installed ppx_deriving.6.1.1 -> installed ppx_sexp_conv.v0.17.1 Done. # To update the current shell environment, run: eval $(opam env) 2026-03-19 21:47.30 ---> saved as "f4e3072f870843aaa4f4d9044158caa5716efb2e36f0638ebe73c838a18dff2d" C:/: (copy (src .) (dst /cygwin64/home/opam/src)) Failure("Failed to prepare snapshot obuilder-25bb4685953652a320766ed13f2b9e689ff78634071ec65342eee3bc6e3f95b1: \"ctr\" \"snapshot\" \"prepare\" \"--mounts\" \"obuilder-25bb4685953652a320766ed13f2b9e689ff78634071ec65342eee3bc6e3f95b1\" \"obuilder-f4e3072f870843aaa4f4d9044158caa5716efb2e36f0638ebe73c838a18dff2d-committed\" failed with exit status 1") 2026-03-19 22:01.24: Job failed: Failed: Build failed