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Building on ltsc2025-1

(from ocaml/opam:windows-server-mingw-ltsc2025-opam)
2026-03-08 03:26.28 ---> using "63e5ddb9687855d0a0c4c5e0088f813758807605401f3a88b07751088826ddff" from cache

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

C:/: (env OPAMPRECISETRACKING 1)

C:/: (env OPAMUTF8 never)

C:/: (env OPAMEXTERNALSOLVER builtin-0install)

C:/: (env OPAMCRITERIA +removed)

C:/: (env CI true)

C:/: (env OPAM_HEALTH_CHECK_CI true)

C:/: (run (shell "ln -f /usr/local/bin/opam-dev.exe /usr/local/bin/opam.exe"))
2026-03-08 03:26.28 ---> using "eb751f1617949fccf400da87a349c508e73323f3f0e3482f2cce8c46fbcb6c21" from cache

C:/: (run (network host)
          (shell "rm -rf ~/opam-repository && git clone -q 'https://github.com/ocaml/opam-repository' ~/opam-repository && git -C ~/opam-repository checkout -q 31db989bcaf14647d9889b8903120d6202ac37a8"))
2026-03-08 03:26.28 ---> using "ef58fca6f6db70f2bdfd85579892df7c50e047d2e179a3be59dcaa5c5a2d773c" from cache

C:/: (run (shell "rm -rf ~/.opam && opam init -ya --bare ~/opam-repository"))

User configuration:
  Updating ~\.bashrc.
[NOTE] Make sure that ~/.bashrc is well sourced in your ~\.bash_profile.

  Added 9 lines after line 1 in ~\.bashrc.
2026-03-08 03:26.28 ---> using "c700dfaf6f2da6800841bb961abfee8cd8858dee38ab51c0793b149f1795270d" from cache

C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache")))
          (network host)
          (shell "opam switch create --repositories=default 'mingw-5.4' '5.4.0'"))

<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
Switch invariant: ["ocaml-base-compiler" {= "5.4.0"}]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> installed arch-x86_64.1
-> installed base-bigarray.base
-> installed base-threads.base
-> installed base-unix.base
-> installed host-arch-x86_64.1
-> installed host-system-mingw.1
-> retrieved mingw-w64-shims.0.2.0  (cached)
-> installed conf-mingw-w64-gcc-x86_64.1
-> retrieved flexdll.0.44  (https://github.com/ocaml/flexdll/archive/refs/tags/0.44.tar.gz)
-> installed flexdll.0.44
-> installed ocaml-env-mingw64.1
-> installed ocaml-options-vanilla.1
-> installed system-mingw.1
-> installed mingw-w64-shims.0.2.0
-> retrieved ocaml-config.3  (2 extra sources)
-> retrieved ocaml-config.3  (2 extra sources)
-> retrieved ocaml-compiler.5.4.0  (https://github.com/ocaml/ocaml/releases/download/5.4.0/ocaml-5.4.0.tar.gz)
-> installed ocaml-compiler.5.4.0
-> installed ocaml-base-compiler.5.4.0
-> installed ocaml-config.3
-> installed ocaml.5.4.0
-> installed base-domains.base
-> installed base-effects.base
-> installed base-nnp.base
Done.
# To update the current shell environment, run: eval $(opam env --switch=mingw-5.4)
2026-03-08 03:26.28 ---> using "bde3e22405d3d4b8eb936b6a5924016abe757c72ef4284f806d0ffa633cf6608" from cache

C:/: (run (network host)
          (shell "opam update --depexts"))
2026-03-08 03:26.28 ---> using "52107e23401ba5a409505a63e9d96ae2fb84390238c362f7049829fa18c5671f" from cache

C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache")))
          (network host)
          (shell  "opam remove -y lbfgs.0.9.5\
                 \nopam install -vy lbfgs.0.9.5\
                 \nres=$?\
                 \nif [ $res = 31 ]; then\
                 \n    if opam show -f x-ci-accept-failures: lbfgs.0.9.5 | grep -q 'ocaml/opam:windows-server-mingw-ltsc2025-opam'; then\
                 \n        echo \"This package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\"\
                 \n        exit 69\
                 \n    fi\
                 \nfi \
                 \n\
                 \n\
                 \nexit $res"))
[NOTE] lbfgs.0.9.5 is not installed.

Nothing to do.
The following actions will be performed:
=== install 8 packages
  - install base-bytes        base   [required by lbfgs]
  - install conf-gfortran     0      [required by lbfgs]
  - install cppo              1.8.0  [required by lbfgs]
  - install csexp             1.5.2  [required by dune-configurator]
  - install dune              3.21.1 [required by lbfgs]
  - install dune-configurator 3.21.1 [required by lbfgs]
  - install lbfgs             0.9.5
  - install ocamlfind         1.9.8  [required by base-bytes]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Processing  3/23: [cppo.1.8.0: extract]
Processing  4/23: [cppo.1.8.0: extract] [csexp.1.5.2: extract]
Processing  5/23: [cppo.1.8.0: extract] [csexp.1.5.2: extract] [dune.3.21.1, dune-configurator.3.21.1: extract]
-> retrieved cppo.1.8.0  (cached)
-> retrieved csexp.1.5.2  (cached)

#=== ERROR while compiling conf-gfortran.0 ====================================#
"gfortran": command not found.


<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions were aborted
| - fetch   cppo       1.8.0
| - fetch   csexp      1.5.2
| - fetch   lbfgs      0.9.5
| - fetch   ocamlfind  1.9.8
| - install base-bytes base
| - install cppo       1.8.0
| - install csexp      1.5.2
| - install lbfgs      0.9.5
| - install ocamlfind  1.9.8
+- 
+- The following actions failed
| - fetch dune.3.21.1, dune-configurator.3.21.1 
| - build conf-gfortran                         0
+- 
- No changes have been performed
# To update the current shell environment, run: eval $(opam env)
'C:\cygwin64\usr\local\bin\opam.exe install -vy lbfgs.0.9.5' failed.
"C:\cygwin64\bin\bash.exe" "-lc" "opam remove -y lbfgs.0.9.5
opam install -vy lbfgs.0.9.5
res=$?
if [ $res = 31 ]; then
    if opam show -f x-ci-accept-failures: lbfgs.0.9.5 | grep -q 'ocaml/opam:windows-server-mingw-ltsc2025-opam'; then
        echo "This package failed and has been disabled for CI using the 'x-ci-accept-failures' field."
        exit 69
    fi
fi 


exit $res" failed with exit status 31
Failed: Build failed