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Building on thyme

(from windows-server-2022-amd64-ocaml-5.3)
2025-08-14 22:42.53 ---> using "1d6ffeb5a52124df73b2e951323e99615c52ca4f9bdf0f65039be6146fabdaab" 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"))
2025-08-14 22:42.53 ---> using "75bf3fbea1cbc65a9803f40104651d67c546cddf5606f6a4af6db8fca92eb5c0" 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 fb96181bf90338b7e9a1c6a0001541cab4756218"))
2025-08-14 22:42.53 ---> using "226ba95894e5fe0eff30ac7de4da804b4dc9e14b1ff282896d3b40da9f82c9b1" from cache

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

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

  Updating ~\.bash_profile.
  Added 9 lines after line 1 in ~\.bash_profile.
2025-08-14 22:42.53 ---> using "3988cc766da4195a7843657cf32af0c8bc40a52a994085bcd781b6bd7adba4c1" from cache

/: (run (cache (opam-archives (target "c:\\Users\\opam\\AppData\\Local\\opam\\download-cache")))
        (network host)
        (shell "opam switch create --repositories=default '5.3' '5.3.0'"))

<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
Switch invariant: ["ocaml-base-compiler" {= "5.3.0"} | "ocaml-system" {= "5.3.0"}]

<><> 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 flexdll.0.44  (cached)
-> retrieved ocaml-config.3  (cached)
-> installed flexdll.0.44
-> 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-compiler.5.3.0  (cached)
-> installed mingw-w64-shims.0.2.0
-> installed ocaml-compiler.5.3.0
-> installed ocaml-base-compiler.5.3.0
-> installed ocaml-config.3
-> installed ocaml.5.3.0
-> installed base-domains.base
-> installed base-effects.base
-> installed base-nnp.base
Done.
# To update the current shell environment, run: eval $(opam env --switch=5.3)
2025-08-14 22:42.53 ---> using "0d7eda16b55a50ddde64f9b9f41fd57da72e8f594144c29e8d087884f271772b" from cache

/: (run (network host)
        (shell "opam update --depexts"))
2025-08-14 22:42.53 ---> using "b8c682b54cfc9c0f8cfef6d796bf98fb131493cfa3ee7a3a0f3184c32115f453" from cache

/: (run (cache (opam-archives (target "c:\\Users\\opam\\AppData\\Local\\opam\\download-cache")))
        (network host)
        (shell  "opam remove -y lp-gurobi.0.5.0\
               \nopam install -vy lp-gurobi.0.5.0\
               \nres=$?\
               \nif [ $res = 31 ]; then\
               \n    if opam show -f x-ci-accept-failures: lp-gurobi.0.5.0 | grep -q 'windows-server-2022-amd64-ocaml-5.3'; 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"))
Nothing to do.
[NOTE] lp-gurobi.0.5.0 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 19 packages
  - install   bigarray-compat              1.1.0    [required by ctypes]
  - install   conf-libffi                  2.0.0    [required by ctypes-foreign]
  - install   conf-mingw-w64-gcc-i686      1        [required by conf-mingw-w64-libffi-i686]
  - install   conf-mingw-w64-libffi-i686   1        [required by conf-libffi]
  - install   conf-mingw-w64-libffi-x86_64 1        [required by conf-libffi]
  - install   conf-pkg-config              4        [required by ctypes-foreign]
  - install   csexp                        1.5.2    [required by dune-configurator]
  - install   ctypes                       0.23.0   [required by lp-gurobi]
  - install   ctypes-foreign               0.23.0   [required by lp-gurobi]
  - install   dune                         3.19.1   [required by lp-gurobi]
  - install   dune-configurator            3.19.1   [required by ctypes, ctypes-foreign]
  - install   integers                     0.7.0    [required by ctypes]
  - install   lp                           0.5.0    [required by lp-gurobi]
  - install   lp-gurobi                    0.5.0
  - install   menhir                       20240715 [required by lp]
  - install   menhirCST                    20240715 [required by menhir]
  - install   menhirLib                    20240715 [required by menhir]
  - install   menhirSdk                    20240715 [required by menhir]
  - install   stdlib-shims                 0.3.0    [required by integers]

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

<><> 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:\Users\opam\AppData\Local\opam\.cygwin\setup-x86_64.exe "--root" "C:\\cygwin64" "--quiet-mode" "unattended" "--no-shortcuts" "--no-startmenu" "--no-desktop" "--no-admin" "--no-version-check" "--no-write-registry" "--packages" "mingw64-i686-gcc-core,mingw64-i686-libffi,mingw64-x86_64-libffi"
- Starting cygwin install, version 2.934
- User has backup/restore rights
- User has symlink creation right
- Current Directory: C:\Windows\system32
- root: C:\cygwin64 system
- Changing gid to Administrators
- Selected local directory: C:\Windows\system32
- net: Preconfig
- site: https://cygwin.mirror.constant.com/
- solving: 3 tasks, update: no, use test packages: no
- solving: 8 tasks, update: no, use test packages: no
- Augmented Transaction List:
-    0 install mingw64-i686-binutils                 2.45-1   
-    1 install mingw64-i686-libffi                   3.2.1-1  
-    2 install mingw64-i686-windows-default-manifest 6.4-1    
-    3 install mingw64-i686-winpthreads              13.0.0-1 
-    4 install mingw64-x86_64-libffi                 3.2.1-2  
-    5 install mingw64-i686-headers                  13.0.0-1 
-    6 install mingw64-i686-runtime                  13.0.0-1 
-    7 install mingw64-i686-gcc-core                 13.4.0-1 
- Downloaded C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/x86_64/release/mingw64-i686-binutils/mingw64-i686-binutils-2.45-1-x86_64.tar.zst
- Downloaded C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-i686-libffi/mingw64-i686-libffi-3.2.1-1.tar.xz
- Downloaded C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-i686-windows-default-manifest/mingw64-i686-windows-default-manifest-6.4-1.tar.xz
- Downloaded C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-i686-winpthreads/mingw64-i686-winpthreads-13.0.0-1-noarch.tar.xz
- Downloaded C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-x86_64-libffi/mingw64-x86_64-libffi-3.2.1-2.tar.xz
- Downloaded C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-i686-headers/mingw64-i686-headers-13.0.0-1-noarch.tar.xz
- Downloaded C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-i686-runtime/mingw64-i686-runtime-13.0.0-1-noarch.tar.xz
- Downloaded C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/x86_64/release/mingw64-i686-gcc/mingw64-i686-gcc-core/mingw64-i686-gcc-core-13.4.0-1-x86_64.tar.zst
- Extracting from file://C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/x86_64/release/mingw64-i686-binutils/mingw64-i686-binutils-2.45-1-x86_64.tar.zst
- Extracting from file://C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-i686-libffi/mingw64-i686-libffi-3.2.1-1.tar.xz
- Extracting from file://C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-i686-windows-default-manifest/mingw64-i686-windows-default-manifest-6.4-1.tar.xz
- Extracting from file://C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-i686-winpthreads/mingw64-i686-winpthreads-13.0.0-1-noarch.tar.xz
- Extracting from file://C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-x86_64-libffi/mingw64-x86_64-libffi-3.2.1-2.tar.xz
- Extracting from file://C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-i686-headers/mingw64-i686-headers-13.0.0-1-noarch.tar.xz
- Extracting from file://C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/noarch/release/mingw64-i686-runtime/mingw64-i686-runtime-13.0.0-1-noarch.tar.xz
- Extracting from file://C:\Windows\system32/https%3a%2f%2fcygwin.mirror.constant.com%2f/x86_64/release/mingw64-i686-gcc/mingw64-i686-gcc-core/mingw64-i686-gcc-core-13.4.0-1-x86_64.tar.zst
- running: C:\cygwin64\bin\dash.exe "/etc/postinstall/0p_000_autorebase.dash"
- running: C:\cygwin64\bin\dash.exe "/etc/postinstall/0p_update-info-dir.dash"
- running: C:\cygwin64\bin\dash.exe "/etc/postinstall/zp_man-db-update-index.dash"
- Ending cygwin install
- NOTE: you should run 'diskperf -y' to enable the disk statistics
- NOTE: you should run 'diskperf -y' to enable the disk statistics

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Processing  1/55: [bigarray-compat.1.1.0: extract]
Processing  2/55: [bigarray-compat.1.1.0: extract]
Processing  3/55: [bigarray-compat.1.1.0: extract]
Processing  4/55: [bigarray-compat.1.1.0: extract]
Processing  5/55: [bigarray-compat.1.1.0: extract]
Processing  6/55: [bigarray-compat.1.1.0: extract]
Processing  7/55: [bigarray-compat.1.1.0: extract] [csexp.1.5.2: extract]
Processing  8/55: [bigarray-compat.1.1.0: extract] [csexp.1.5.2: extract] [ctypes.0.23.0, ctypes-foreign.0.23.0: extract]
Processing  9/55: [bigarray-compat.1.1.0: extract] [csexp.1.5.2: extract] [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [conf-mingw-w64-gcc-i686: i686-w64-mingw32-gcc]
Processing 10/55: [bigarray-compat.1.1.0: extract] [csexp.1.5.2: extract] [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [conf-mingw-w64-gcc-i686: i686-w64-mingw32-gcc] [conf-pkg-config: pkgconf]
-> retrieved bigarray-compat.1.1.0  (cached)
Processing 10/55: [csexp.1.5.2: extract] [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [conf-mingw-w64-gcc-i686: i686-w64-mingw32-gcc] [conf-pkg-config: pkgconf]
Processing 11/55: [csexp.1.5.2: extract] [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: http] [conf-mingw-w64-gcc-i686: i686-w64-mingw32-gcc] [conf-pkg-config: pkgconf]
-> retrieved csexp.1.5.2  (cached)
Processing 11/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: http] [conf-mingw-w64-gcc-i686: i686-w64-mingw32-gcc] [conf-pkg-config: pkgconf]
Processing 12/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: http] [integers.0.7.0: extract] [conf-mingw-w64-gcc-i686: i686-w64-mingw32-gcc] [conf-pkg-config: pkgconf]
+ C:\cygwin64\bin\i686-w64-mingw32-gcc.exe "--version" (CWD=C:\Users\opam\AppData\Local\opam\5.3\.opam-switch\build\conf-mingw-w64-gcc-i686.1)
- i686-w64-mingw32-gcc (GCC) 13.4.0
- Copyright (C) 2023 Free Software Foundation, Inc.
- This is free software; see the source for copying conditions.  There is NO
- warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- 
-> compiled  conf-mingw-w64-gcc-i686.1
Processing 12/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: http] [integers.0.7.0: extract] [conf-pkg-config: pkgconf]
-> installed conf-mingw-w64-gcc-i686.1
Processing 13/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: http] [integers.0.7.0: extract] [conf-pkg-config: pkgconf]
+ C:\cygwin64\bin\pkgconf.exe "--version" (CWD=C:\Users\opam\AppData\Local\opam\5.3\.opam-switch\build\conf-pkg-config.4)
- 2.5.1
-> compiled  conf-pkg-config.4
Processing 13/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: http] [integers.0.7.0: extract]
-> installed conf-pkg-config.4
Processing 14/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: http] [integers.0.7.0: extract]
Processing 15/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: http] [integers.0.7.0: extract] [conf-mingw-w64-libffi-i686: pkgconf libffi]
Processing 16/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: http] [integers.0.7.0: extract] [conf-mingw-w64-libffi-i686: pkgconf libffi] [conf-mingw-w64-libffi-x86_64: pkgconf libffi]
Processing 16/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: extract] [integers.0.7.0: extract] [conf-mingw-w64-libffi-i686: pkgconf libffi] [conf-mingw-w64-libffi-x86_64: pkgconf libffi]
-> retrieved integers.0.7.0  (cached)
Processing 16/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: extract] [conf-mingw-w64-libffi-i686: pkgconf libffi] [conf-mingw-w64-libffi-x86_64: pkgconf libffi]
Processing 17/55: [ctypes.0.23.0, ctypes-foreign.0.23.0: extract] [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: http] [conf-mingw-w64-libffi-i686: pkgconf libffi] [conf-mingw-w64-libffi-x86_64: pkgconf libffi]
-> retrieved ctypes.0.23.0, ctypes-foreign.0.23.0  (cached)
Processing 17/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: http] [conf-mingw-w64-libffi-i686: pkgconf libffi] [conf-mingw-w64-libffi-x86_64: pkgconf libffi]
Processing 18/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: http] [menhir.20240715 + 3 others: extract] [conf-mingw-w64-libffi-i686: pkgconf libffi] [conf-mingw-w64-libffi-x86_64: pkgconf libffi]
Processing 18/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: extract] [menhir.20240715 + 3 others: extract] [conf-mingw-w64-libffi-i686: pkgconf libffi] [conf-mingw-w64-libffi-x86_64: pkgconf libffi]
+ C:\cygwin64\bin\pkgconf.exe "--personality=i686-w64-mingw32" "libffi" (CWD=C:\Users\opam\AppData\Local\opam\5.3\.opam-switch\build\conf-mingw-w64-libffi-i686.1)
-> compiled  conf-mingw-w64-libffi-i686.1
Processing 18/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: extract] [menhir.20240715 + 3 others: extract] [conf-mingw-w64-libffi-x86_64: pkgconf libffi]
-> installed conf-mingw-w64-libffi-i686.1
Processing 19/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: extract] [menhir.20240715 + 3 others: extract] [conf-mingw-w64-libffi-x86_64: pkgconf libffi]
+ C:\cygwin64\bin\pkgconf.exe "--personality=x86_64-w64-mingw32" "libffi" (CWD=C:\Users\opam\AppData\Local\opam\5.3\.opam-switch\build\conf-mingw-w64-libffi-x86_64.1)
-> compiled  conf-mingw-w64-libffi-x86_64.1
Processing 19/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: extract] [menhir.20240715 + 3 others: extract]
-> installed conf-mingw-w64-libffi-x86_64.1
Processing 20/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: extract] [menhir.20240715 + 3 others: extract]
Processing 21/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: extract] [menhir.20240715 + 3 others: extract] [conf-libffi: pkgconf libffi]
+ C:\cygwin64\bin\pkgconf.exe "--personality=x86_64-w64-mingw32" "libffi" (CWD=C:\Users\opam\AppData\Local\opam\5.3\.opam-switch\build\conf-libffi.2.0.0)
-> compiled  conf-libffi.2.0.0
Processing 21/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: extract] [menhir.20240715 + 3 others: extract]
-> installed conf-libffi.2.0.0
Processing 22/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [lp.0.5.0, lp-gurobi.0.5.0: extract] [menhir.20240715 + 3 others: extract]
-> retrieved lp.0.5.0, lp-gurobi.0.5.0  (https://github.com/ktahar/ocaml-lp/archive/0.5.0.tar.gz)
Processing 22/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [menhir.20240715 + 3 others: extract]
Processing 23/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [menhir.20240715 + 3 others: extract] [mingw-w64-shims.0.2.0: extract]
-> retrieved menhir.20240715, menhirCST.20240715, menhirLib.20240715, menhirSdk.20240715  (cached)
Processing 23/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [mingw-w64-shims.0.2.0: extract]
Processing 24/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [mingw-w64-shims.0.2.0: extract] [stdlib-shims.0.3.0: extract]
-> retrieved mingw-w64-shims.0.2.0  (cached)
Processing 24/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [stdlib-shims.0.3.0: extract]
-> removed   mingw-w64-shims.0.2.0
Processing 25/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [stdlib-shims.0.3.0: extract]
Processing 26/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [stdlib-shims.0.3.0: extract] [mingw-w64-shims: sh mingw-w64-shims]
-> retrieved stdlib-shims.0.3.0  (cached)
Processing 26/55: [dune.3.19.1, dune-configurator.3.19.1: extract] [mingw-w64-shims: sh mingw-w64-shims]
-> retrieved dune.3.19.1, dune-configurator.3.19.1  (https://github.com/ocaml/dune/releases/download/3.19.1/dune-3.19.1.tbz)
Processing 26/55: [mingw-w64-shims: sh mingw-w64-shims]
Processing 27/55: [dune: ocaml 7] [mingw-w64-shims: sh mingw-w64-shims]
+ C:\cygwin64\bin\sh.exe "./gen_config.sh" "mingw-w64-shims" "i686-binutils" "i686-gcc-core" "i686-gcc-g++-false" "x86_64-binutils" "x86_64-gcc-core" "x86_64-gcc-g++-false" "pkgconf" (CWD=C:\Users\opam\AppData\Local\opam\5.3\.opam-switch\build\mingw-w64-shims.0.2.0)
-> compiled  mingw-w64-shims.0.2.0
Processing 27/55: [dune: ocaml 7]
-> installed mingw-w64-shims.0.2.0
Processing 28/55: [dune: ocaml 7]
+ C:\Users\opam\AppData\Local\opam\5.3\bin\ocaml.exe "boot/bootstrap.ml" "-j" "7" (CWD=C:\Users\opam\AppData\Local\opam\5.3\.opam-switch\build\dune.3.19.1)
- ocamlc -output-complete-exe -w -24 -g -o .duneboot.exe -I boot -I +unix unix.cma boot/libs.ml boot/duneboot.ml
- x86_64-w64-mingw32-gcc: fatal error: '-fuse-linker-plugin', but cyglto_plugin.dll not found
- compilation terminated.
- ** Fatal error: Error during linking
- 
- File "boot/duneboot.ml", line 1:
- Error: Error while building custom runtime system
[ERROR] The compilation of dune.3.19.1 failed at "ocaml boot/bootstrap.ml -j 7".

#=== ERROR while compiling dune.3.19.1 ========================================#
# context              2.3.0 | win32/x86_64 | ocaml-base-compiler.5.3.0 | file://C:/Users/opam/opam-repository
# path                 ~\AppData\Local\opam\5.3\.opam-switch\build\dune.3.19.1
# command              ~\AppData\Local\opam\5.3\bin\ocaml.exe boot/bootstrap.ml -j 7
# exit-code            2
# env-file             ~\AppData\Local\opam\log\dune-2196-50e83e.env
# output-file          ~\AppData\Local\opam\log\dune-2196-50e83e.out
### output ###
# ocamlc -output-complete-exe -w -24 -g -o .duneboot.exe -I boot -I +unix unix.cma boot/libs.ml boot/duneboot.ml
# x86_64-w64-mingw32-gcc: fatal error: '-fuse-linker-plugin', but cyglto_plugin.dll not found
# compilation terminated.
# ** Fatal error: Error during linking
# 
# File "boot/duneboot.ml", line 1:
# Error: Error while building custom runtime system



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions were aborted
| - install bigarray-compat   1.1.0
| - install csexp             1.5.2
| - install ctypes            0.23.0
| - install ctypes-foreign    0.23.0
| - install dune-configurator 3.19.1
| - install integers          0.7.0
| - install lp                0.5.0
| - install lp-gurobi         0.5.0
| - install menhir            20240715
| - install menhirCST         20240715
| - install menhirLib         20240715
| - install menhirSdk         20240715
| - install stdlib-shims      0.3.0
+- 
+- The following actions failed
| - build dune 3.19.1
+- 
+- The following changes have been performed (the rest was aborted)
| - recompile mingw-w64-shims              0.2.0
| - install   conf-libffi                  2.0.0
| - install   conf-mingw-w64-gcc-i686      1
| - install   conf-mingw-w64-libffi-i686   1
| - install   conf-mingw-w64-libffi-x86_64 1
| - install   conf-pkg-config              4
+- 
# To update the current shell environment, run: eval $(opam env)

The former state can be restored with:
    C:\cygwin64\bin\opam.exe switch import "C:\\Users\\opam\\AppData\\Local\\opam\\5.3\\.opam-switch\\backup\\state-20250814224528.export"
'C:\cygwin64\bin\opam.exe install -vy lp-gurobi.0.5.0' failed.
"opam remove -y lp-gurobi.0.5.0
opam install -vy lp-gurobi.0.5.0
res=$?
if [ $res = 31 ]; then
    if opam show -f x-ci-accept-failures: lp-gurobi.0.5.0 | grep -q 'windows-server-2022-amd64-ocaml-5.3'; 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