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Building on odawa

(from windows-server-2022-amd64-ocaml-4.14.2)
2025-01-02 02:55.53 ---> using "b1ae2ad36af625524288c188f7e099c501706c4119a38e11e1b5610819652cec" from cache

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

/: (env OPAMPRECISETRACKING 1)

/: (env OPAMUTF8 never)

/: (env OPAMEXTERNALSOLVER builtin-0install)

/: (env OPAMCRITERIA +removed)

/: (env CI true)

/: (env OPAM_HEALTH_CHECK_CI true)

/: (run (shell "ln -f /usr/bin/opam-dev.exe /usr/bin/opam.exe"))
2025-01-02 02:55.53 ---> using "4b57a7007c87218b9b3ddcf81f74c22338c638c8bcdfdaa01c2afa888290f021" from cache

/: (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 631e587f169807aaf233a49289573c1bb7c174b7"))
2025-01-02 02:55.53 ---> using "5644bbd2c8d44548295a6bef209a1a3477cd2e1eadfccbc394c0aa38ec338bc9" from cache

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

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

  Added 9 lines after line 1 in ~\.bash_profile.
2025-01-02 02:55.53 ---> using "db58dd96510ee26e05c407b44cff28e6b54c1d26094b91fe11c7843e655b656d" from cache

/: (run (cache (opam-archives (target "c:\\Users\\opam\\AppData\\Local\\opam\\download-cache")))
        (network host)
        (shell "opam switch create --repositories=default 'default' 'ocaml-base-compiler.4.14.2'"))

<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
Switch invariant: ["ocaml-base-compiler" {= "4.14.2"}]

<><> 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 flexdll.0.43  (cached)
-> retrieved ocaml-config.3  (cached)
-> installed flexdll.0.43
-> installed ocaml-options-vanilla.1
-> retrieved mingw-w64-shims.0.2.0  (cached)
-> installed conf-mingw-w64-gcc-x86_64.1
-> installed ocaml-env-mingw64.1
-> installed system-mingw.1
-> retrieved ocaml-base-compiler.4.14.2  (cached)
-> installed mingw-w64-shims.0.2.0
-> installed ocaml-base-compiler.4.14.2
-> installed ocaml-config.3
-> installed ocaml.4.14.2
Done.
# To update the current shell environment, run: eval $(opam env --switch=default)
2025-01-02 02:55.53 ---> using "0894302ff4ffbb51614a746dd59adb3ad1d72955d7a44cfbb9b70beeb742f668" from cache

/: (run (network host)
        (shell "opam update --depexts"))
2025-01-02 02:55.53 ---> using "834d294855b08bfe1d8c7da42a6e30983faa92ceb92b5602f1afa1bf76025983" from cache

/: (run (cache (opam-archives (target "c:\\Users\\opam\\AppData\\Local\\opam\\download-cache")))
        (network host)
        (shell  "\
               \nopam remove -y \"owl-opt-lbfgs.0.0.1\"\
               \nopam install -vy \"owl-opt-lbfgs.0.0.1\"\
               \nres=$?\
               \nif [ $res = 31 ]; then\
               \n    if opam show -f x-ci-accept-failures: \"owl-opt-lbfgs.0.0.1\" | grep -q '\"windows-server-2022-amd64-ocaml-4.14.2\"'; 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\
               \n"))
Nothing to do.
[NOTE] owl-opt-lbfgs.0.0.1 is not installed.

The following actions will be performed:
=== recompile 1 package
  - recompile mingw-w64-shims            0.2.0             [uses conf-mingw-w64-gcc-i686]
=== install 32 packages
  - install   base                       v0.16.3           [required by owl]
  - install   base-bytes                 base              [required by lbfgs]
  - install   bigarray-compat            1.1.0             [required by ctypes]
  - install   camlzip                    1.13              [required by npy]
  - install   conf-bash                  1                 [required by base]
  - install   conf-gfortran              0                 [required by lbfgs]
  - install   conf-mingw-w64-gcc-i686    1                 [required by conf-mingw-w64-zlib-i686]
  - install   conf-mingw-w64-zlib-i686   1                 [required by conf-zlib]
  - install   conf-mingw-w64-zlib-x86_64 1                 [required by conf-zlib]
  - install   conf-openblas              0.2.2             [required by owl]
  - install   conf-pkg-config            3                 [required by conf-zlib]
  - install   conf-zlib                  1                 [required by camlzip]
  - install   cppo                       1.7.0             [required by lbfgs]
  - install   csexp                      1.5.2             [required by dune-configurator]
  - install   ctypes                     0.23.0            [required by owl]
  - install   dune                       3.16.1            [required by owl-opt-lbfgs]
  - install   dune-configurator          3.16.1            [required by lbfgs, owl]
  - install   integers                   0.7.0             [required by ctypes]
  - install   lbfgs                      0.9.5             [required by owl-opt-lbfgs]
  - install   npy                        0.0.9             [required by owl]
  - install   ocaml-compiler-libs        v0.12.4           [required by ppxlib]
  - install   ocamlfind                  1.9.5             [required by base-bytes]
  - install   owl                        1.1               [required by owl-opt-lbfgs]
  - install   owl-base                   1.1               [required by owl]
  - install   owl-opt                    0.0.1             [required by owl-opt-lbfgs]
  - install   owl-opt-lbfgs              0.0.1
  - install   ppx-owl-opt                0.0.1             [required by owl-opt-lbfgs]
  - install   ppx_derivers               1.2.1             [required by ppxlib]
  - install   ppxlib                     0.33.1~5.3preview [required by ppx-owl-opt]
  - install   sexplib0                   v0.16.0           [required by base]
  - install   stdio                      v0.16.0           [required by owl]
  - install   stdlib-shims               0.3.0             [required by integers, ppxlib]

The following system packages will first need to be installed:
    mingw64-i686-gcc-core mingw64-i686-zlib mingw64-x86_64-zlib

<><> Handling external dependencies <><><><><><><><><><><><><><><><><><><><><><>

opam believes some required external dependencies are missing. opam can:
> 1. Run C:\Users\opam\AppData\Local\opam\.cygwin\setup-x86_64.exe to install them (may need root/sudo access)
  2. Display the recommended C:\Users\opam\AppData\Local\opam\.cygwin\setup-x86_64.exe command and wait while you run it manually (e.g. in another terminal)
  3. Continue anyway, and, upon success, permanently register that this external dependency is present, but not detectable
  4. Abort the installation

[1/2/3/4] 1

'C:\cygwin64\bin\opam.exe install -vy owl-opt-lbfgs.0.0.1' failed.
Fatal error:
OpamDownload.Download_fail(_, "curl: empty response while downloading https://cygwin.com/sha512.sum")
"
opam remove -y "owl-opt-lbfgs.0.0.1"
opam install -vy "owl-opt-lbfgs.0.0.1"
res=$?
if [ $res = 31 ]; then
    if opam show -f x-ci-accept-failures: "owl-opt-lbfgs.0.0.1" | grep -q '"windows-server-2022-amd64-ocaml-4.14.2"'; 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 99
Failed: Build failed