2026-04-20 19:49.41: New job: test backtracking/ocaml-hashcons https://github.com/backtracking/ocaml-hashcons.git#refs/heads/master (9d6a7855e70ac59f8e434efdc301aa9c9bc81991) (windows-x86_64:windows-server-mingw-ltsc2025-5.4_opam-2.5) Base: ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:0e4fa08d05a319101c6ab90f612f6b79d83aa94d5df9b492774b9176694093e1 Opam project build To reproduce locally: git clone --recursive "https://github.com/backtracking/ocaml-hashcons.git" -b "master" && cd "ocaml-hashcons" && git reset --hard 9d6a7855 cat > Dockerfile <<'END-OF-DOCKERFILE' FROM ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:0e4fa08d05a319101c6ab90f612f6b79d83aa94d5df9b492774b9176694093e1 # 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 e8d803e6a9fd9ba486dae1eb82911555092555cf || git fetch origin master) && git reset -q --hard e8d803e6a9fd9ba486dae1eb82911555092555cf && git log --no-decorate -n1 --oneline && opam update -u COPY --chown=1000:1000 hashcons.opam /cygwin64/home/opam/src/./ RUN opam pin add -yn hashcons.dev '/cygwin64/home/opam/src/./' RUN echo '(lang dune 3.0)' > '/home/opam/src/./dune-project' ENV DEPS="arch-x86_64.1 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 dune.3.22.2 flexdll.0.44 host-arch-x86_64.1 host-system-mingw.1 mingw-w64-shims.0.2.0 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 system-mingw.1" ENV CI="true" ENV OCAMLCI="true" RUN opam update --depexts && opam install --cli=2.5 --depext-only -y hashcons.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 2026-04-20 19:49.41: Using cache hint "backtracking/ocaml-hashcons-ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:0e4fa08d05a319101c6ab90f612f6b79d83aa94d5df9b492774b9176694093e1-windows-server-mingw-ltsc2025-5.4_opam-2.5-3018be7cc4f5f6da515883830c848512" 2026-04-20 19:49.41: Using OBuilder spec: ((from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:0e4fa08d05a319101c6ab90f612f6b79d83aa94d5df9b492774b9176694093e1) (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 e8d803e6a9fd9ba486dae1eb82911555092555cf || git fetch origin master) && git reset -q --hard e8d803e6a9fd9ba486dae1eb82911555092555cf && git log --no-decorate -n1 --oneline && opam update -u")) (copy (src hashcons.opam) (dst /cygwin64/home/opam/src/./)) (run (network host) (shell "opam pin add -yn hashcons.dev '/cygwin64/home/opam/src/./'")) (run (shell "echo '(lang dune 3.0)' > '/home/opam/src/./dune-project'")) (env DEPS "arch-x86_64.1 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 dune.3.22.2 flexdll.0.44 host-arch-x86_64.1 host-system-mingw.1 mingw-w64-shims.0.2.0 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 system-mingw.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 hashcons.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")) ) 2026-04-20 19:49.41: Waiting for resource in pool OCluster 2026-04-20 19:49.41: Waiting for worker… 2026-04-20 21:33.52: Got resource from pool OCluster Building on ltsc2025-2 All commits already cached HEAD is now at 9d6a785 fixes for ocaml-ci (from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.4@sha256:0e4fa08d05a319101c6ab90f612f6b79d83aa94d5df9b492774b9176694093e1) 2026-04-20 21:34.06 ---> using "e6e8a2cf62a928430568e9b050d6cc986ddb11ca371f3b24e6b6f1ad80860153" 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")) 2026-04-20 21:34.06 ---> using "8371c7bbeda21231937607a48921d4490a1c9c23810f1d7416ef9e1aa874f8e3" 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 2026-04-20 21:34.06 ---> using "8bf506c77ce4ea2b6efe0b049434ba77c8ea5f4c0beccb9cedbfead0127ea0b7" from cache C:/: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) CYGWIN_NT-10.0-26100 3.6.7-1.x86_64 The OCaml toplevel, version 5.4.1 2.5.0 2026-04-20 21:34.06 ---> using "017acac92f6c222a89f675ad77684e3ed5874f73aa36dd7947a6dd1cf4a5b5c7" from cache C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache"))) (network host) (shell "cd ~/opam-repository && (git cat-file -e e8d803e6a9fd9ba486dae1eb82911555092555cf || git fetch origin master) && git reset -q --hard e8d803e6a9fd9ba486dae1eb82911555092555cf && git log --no-decorate -n1 --oneline && opam update -u")) From https://github.com/ocaml/opam-repository * branch master -> FETCH_HEAD 65664dc5b2..e8d803e6a9 master -> origin/master e8d803e6a9 Merge pull request #29751 from dra27/partial-revert-29579 <><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><> [default] synchronised from git+file://C:/cygwin64/home/opam/opam-repository default (at git+file://C:/cygwin64/home/opam/opam-repository): [WARNING] opam is out-of-date. Please consider updating it (https://opam.ocaml.org/doc/Install.html) default (at git+file://C:/cygwin64/home/opam/opam-repository): [INFO] opam 2.5.1 includes security fixes; please consider upgrading (https://opam.ocaml.org/doc/Install.html) Everything as up-to-date as possible 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) 2026-04-20 21:34.06 ---> using "3b41e1a66871bfa792a3878685c05a0d1a301d8e0e1caea4645fc687a67f8aa8" from cache C:/: (copy (src hashcons.opam) (dst /cygwin64/home/opam/src/./)) 2026-04-20 21:34.42 ---> saved as "e7c617cbcae69cc27c9c5c364a27a4bfe3ea6c66dfa9e209a549dff8d7f75595" C:/: (run (network host) (shell "opam pin add -yn hashcons.dev '/cygwin64/home/opam/src/./'")) [hashcons.dev] synchronised (file://C:/cygwin64/home/opam/src) [WARNING] Failed checks on hashcons package definition from source at file://C:/cygwin64/home/opam/src: warning 62: License doesn't adhere to the SPDX standard, see https://spdx.org/licenses/ : "LGPL-2.1" hashcons is now pinned to file://C:/cygwin64/home/opam/src (version dev) 2026-04-20 21:36.20 ---> saved as "e3f6843dde32e95f4711222dda99a24939dc7441909724272f9dc02c751d206a" C:/: (run (shell "echo '(lang dune 3.0)' > '/home/opam/src/./dune-project'")) 2026-04-20 21:40.00 ---> saved as "53d1967f014a6e80e71ad23814828d74cbee9621729e641554b33b5e0741c906" C:/: (env DEPS "arch-x86_64.1 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 dune.3.22.2 flexdll.0.44 host-arch-x86_64.1 host-system-mingw.1 mingw-w64-shims.0.2.0 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 system-mingw.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 hashcons.dev $DEPS")) <><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><> [hashcons.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 5.4.1). [NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.1). [NOTE] Package ocaml is already installed (current version is 5.4.1). [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) 2026-04-20 21:41.19 ---> saved as "d9620cdb2b11fc0fe907db01b92dc98457911242b2ed6bf7ab3ee669ba75ccea" 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 5.4.1). [NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.1). [NOTE] Package ocaml is already installed (current version is 5.4.1). [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 1 package - install dune 3.22.2 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> retrieved dune.3.22.2 (cached) -> installed dune.3.22.2 Done. # To update the current shell environment, run: eval $(opam env) 2026-04-20 21:48.58 ---> saved as "45a4c25a09fcb4b8c457e2040901a9b5449eaa5384591a2b2abe3b6fbe73faf3" C:/: (copy (src .) (dst /cygwin64/home/opam/src)) 2026-04-20 22:02.23 ---> saved as "75d7299d56548a95d3e3fe1e6d40ea0e568846f02d933b1c9b048df59f3ebac0" C:/: (run (shell "cd /home/opam/src && opam exec -- dune build @install @check @runtest && rm -rf _build")) File "dune", line 16, characters 7-14: 16 | (name test_qs) ^^^^^^^ (cd _build/default && .\test_qs.exe) Fatal error: exception Failure("input_value: not a binary channel") (cd _build/default && .\rule110.exe) table length: 1000007 / nb. entries: 80031 / sum of bucket length: 231445 smallest bucket: 0 / median bucket: 0 / biggest bucket: 7 66188 results "C:\cygwin64\bin\bash.exe" "-lc" "cd /home/opam/src && opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1 2026-04-20 22:02.54: Job failed: Failed: Build failed