2026-06-25 19:03.52: New job: test backtracking/bitv https://github.com/backtracking/bitv.git#refs/pull/41/head (0e42d4c622b7b4cd629990a7dd6bceddcf46b19b) (windows-x86_64:windows-server-mingw-ltsc2025-5.5_opam-2.5) Base: ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.5@sha256:09d59f354e8a8fefb18d63a6727f1e6cf91a18b915d2dd89ae3e1162e2b364d5 Opam project build To reproduce locally: git clone --recursive "https://github.com/backtracking/bitv.git" && cd "bitv" && git fetch origin "refs/pull/41/head" && git reset --hard 0e42d4c6 cat > Dockerfile <<'END-OF-DOCKERFILE' FROM ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.5@sha256:09d59f354e8a8fefb18d63a6727f1e6cf91a18b915d2dd89ae3e1162e2b364d5 # windows-server-mingw-ltsc2025-5.5_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 2569983dbf3e7bba6895aaa326c068232317845d || git fetch origin master) && git reset -q --hard 2569983dbf3e7bba6895aaa326c068232317845d && 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 bitv.opam /cygwin64/home/opam/src/./ RUN opam pin add -yn bitv.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 compiler-cloning.enabled conf-mingw-w64-gcc-x86_64.1 dune.3.23.1 flexdll.0.44 host-arch-x86_64.1 host-system-mingw.1 mingw-w64-shims.1.0.1 ocaml.5.5.0 ocaml-base-compiler.5.5.0 ocaml-compiler.5.5.0 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 bitv.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 2026-06-25 19:03.52: Using cache hint "backtracking/bitv-ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.5@sha256:09d59f354e8a8fefb18d63a6727f1e6cf91a18b915d2dd89ae3e1162e2b364d5-windows-server-mingw-ltsc2025-5.5_opam-2.5-0e1137b37b3f5469341563ccf98252c4" 2026-06-25 19:03.52: Using OBuilder spec: ((from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.5@sha256:09d59f354e8a8fefb18d63a6727f1e6cf91a18b915d2dd89ae3e1162e2b364d5) (comment windows-server-mingw-ltsc2025-5.5_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 2569983dbf3e7bba6895aaa326c068232317845d || git fetch origin master) && git reset -q --hard 2569983dbf3e7bba6895aaa326c068232317845d && 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 bitv.opam) (dst /cygwin64/home/opam/src/./)) (run (network host) (shell "opam pin add -yn bitv.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 compiler-cloning.enabled conf-mingw-w64-gcc-x86_64.1 dune.3.23.1 flexdll.0.44 host-arch-x86_64.1 host-system-mingw.1 mingw-w64-shims.1.0.1 ocaml.5.5.0 ocaml-base-compiler.5.5.0 ocaml-compiler.5.5.0 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 bitv.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")) ) 2026-06-25 19:03.52: Waiting for resource in pool OCluster 2026-06-25 19:04.20: Waiting for worker… 2026-06-26 02:45.31: Got resource from pool OCluster Building on ltsc2025-1 All commits already cached HEAD is now at 0e42d4c faster tanimoto implementation (from ocaml/opam:windows-server-mingw-ltsc2025-ocaml-5.5@sha256:09d59f354e8a8fefb18d63a6727f1e6cf91a18b915d2dd89ae3e1162e2b364d5) 2026-06-26 02:55.53 ---> using "3b6bc604d28e084d5b6d5486e783230e56b2ecc972698a8cc035cefe952f83d5" from cache C:/: (comment windows-server-mingw-ltsc2025-5.5_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")) 2026-06-26 02:55.53 ---> using "89ef61d9d684b1e10620d147318bbf73e511dcd739aa2d0c8f945218f023847a" from cache C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache"))) (network host) (shell "cd ~/opam-repository && (git cat-file -e 2569983dbf3e7bba6895aaa326c068232317845d || git fetch origin master) && git reset -q --hard 2569983dbf3e7bba6895aaa326c068232317845d && git log --no-decorate -n1 --oneline")) From https://github.com/ocaml/opam-repository * branch master -> FETCH_HEAD edbf61b356..ceed23f9d3 master -> origin/master 2569983dbf Merge pull request #30085 from Octachron/OCaml_5.5.0_fix_relocatable_build 2026-06-26 02:55.53 ---> using "5410a8f40cbfd5ca560bd5d281cbbde71315f55a84b8b07705b4860c8d8ce578" 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 2026-06-26 02:55.53 ---> using "b11b1c9996d63fb4ebfb64dc0bfb0cba911b4065ca945529c8ddcf51de2143f0" from cache C:/: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) CYGWIN_NT-10.0-26100 3.6.9-1.x86_64 The OCaml toplevel, version 5.5.0 2.5.1 2026-06-26 02:55.53 ---> using "35a2ec45f227e7d968bc40a115ddb08cd0386b454069d7d5a03a29b88c9ec4c6" from cache C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache"))) (network host) (shell "opam update -u")) <><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><> [default] no changes from git+file://C:/cygwin64/home/opam/opam-repository The following actions will be performed: === recompile 6 packages - recompile base-domains base [uses ocaml] - recompile base-effects base [uses ocaml] - recompile base-nnp base [uses base-domains] - recompile ocaml 5.5.0 [uses ocaml-base-compiler] - recompile ocaml-base-compiler 5.5.0 (pinned) [uses ocaml-compiler] - recompile ocaml-compiler 5.5.0 [upstream or system changes] === install 1 package - install compiler-cloning enabled [required by ocaml-compiler] <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> retrieved ocaml.5.5.0 (cached) -> removed base-effects.base -> removed base-nnp.base -> removed base-domains.base -> removed ocaml.5.5.0 -> removed ocaml-base-compiler.5.5.0 -> installed compiler-cloning.enabled -> retrieved ocaml-compiler.5.5.0 (cached) -> removed ocaml-compiler.5.5.0 -> installed ocaml-compiler.5.5.0 -> installed ocaml-base-compiler.5.5.0 -> installed ocaml.5.5.0 -> installed base-domains.base -> installed base-effects.base -> installed base-nnp.base Done. <><> ocaml-compiler.5.5.0 installed successfully ><><><><><><><><><><><><><><><> => This switch had to be compiled from sources, but future switches with the 🐌 same compiler version and configuration should assemble instantly. # To update the current shell environment, run: eval $(opam env) 2026-06-26 02:55.53 ---> using "3e58af9216e758af4a284e888d8fdac1550ca2cc88606e54338cc5f56ab8cc81" from cache C:/: (copy (src bitv.opam) (dst /cygwin64/home/opam/src/./)) 2026-06-26 02:55.53 ---> using "30b2c039b2ac741c8a9a165c4d9a3a1338a1f0e76af9d22d22c959ecd434d646" from cache C:/: (run (network host) (shell "opam pin add -yn bitv.dev '/cygwin64/home/opam/src/./'")) [bitv.dev] synchronised (file://C:/cygwin64/home/opam/src) bitv is now pinned to file://C:/cygwin64/home/opam/src (version dev) 2026-06-26 02:55.53 ---> using "a52e742b71c27908c510d56eb6647c40007402f21146b7a66d4a6036985a7877" from cache C:/: (run (shell "echo '(lang dune 3.0)' > '/home/opam/src/./dune-project'")) 2026-06-26 02:55.53 ---> using "19d4d18f59c29d1445b65654fe9672dc6a2563b3771dc49bd650d3369f925f66" from cache 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 compiler-cloning.enabled conf-mingw-w64-gcc-x86_64.1 dune.3.23.1 flexdll.0.44 host-arch-x86_64.1 host-system-mingw.1 mingw-w64-shims.1.0.1 ocaml.5.5.0 ocaml-base-compiler.5.5.0 ocaml-compiler.5.5.0 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 bitv.dev $DEPS")) <><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><> [bitv.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-compiler is already installed (current version is 5.5.0). [NOTE] Package ocaml-base-compiler is already installed (current version is 5.5.0). [NOTE] Package ocaml is already installed (current version is 5.5.0). [NOTE] Package mingw-w64-shims is already installed (current version is 1.0.1). [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 compiler-cloning is already installed (current version is enabled). [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) 2026-06-26 02:55.53 ---> using "c9fdd507b50b50f1a633b4e7cf68e72d1ea12a0e9dc01fe23ccf8b82c4059cd7" from cache 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-compiler is already installed (current version is 5.5.0). [NOTE] Package ocaml-base-compiler is already installed (current version is 5.5.0). [NOTE] Package ocaml is already installed (current version is 5.5.0). [NOTE] Package mingw-w64-shims is already installed (current version is 1.0.1). [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 compiler-cloning is already installed (current version is enabled). [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 3.23.1 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> retrieved dune.3.23.1 (cached) -> installed dune.3.23.1 Done. # To update the current shell environment, run: eval $(opam env) 2026-06-26 02:55.53 ---> using "1c907894854f120d2b5e6b6b05023893445ea522f1d716bb93ea43bf746395be" from cache C:/: (copy (src .) (dst /cygwin64/home/opam/src)) 2026-06-26 02:57.08 ---> saved as "f4555c7298c9824435adf0705ddc41f2f770725160c5350c039a2e821cc40ab7" C:/: (run (shell "cd /home/opam/src && opam exec -- dune build @install @check @runtest && rm -rf _build")) File "dune", line 14, characters 7-11: 14 | (name test) ^^^^ (cd _build/default && .\test.exe) Fatal error: exception File "test.ml", line 85, characters 2-8: Assertion failed "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 2026-06-26 02:57.49: Job failed: Failed: Build failed