(for PR #28619)

2025-09-30 08:03.59: New job: build MlFront_Thunk.2.4.2.21, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/28619/head (f053538f79a18e4c6a4064eb8f48277b038e350a)
                              on debian-13-ocaml-4.08/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/28619/head" && git reset --hard f053538f
git fetch origin master
git merge --no-edit dfe27d924d3f2d9d3045aa994e54a6172a669ecb
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.08@sha256:b9828be178417e3bc607ef229c00d658316b130c027775f6069f6a7c473de176
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn MlFront_Thunk.2.4.2.21 2.4.2.21
RUN opam reinstall MlFront_Thunk.2.4.2.21; \
    res=$?; \
    test "$res" != 31 && exit "$res"; \
    export OPAMCLI=2.0; \
    build_dir=$(opam var prefix)/.opam-switch/build; \
    failed=$(ls "$build_dir"); \
    partial_fails=""; \
    for pkg in $failed; do \
    if opam show -f x-ci-accept-failures: "$pkg" | grep -qF "\"debian-13\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'MlFront_Thunk.2.4.2.21' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1

END-OF-DOCKERFILE
docker build -f ../Dockerfile .

2025-09-30 08:03.59: Using cache hint "ocaml/opam:debian-13-ocaml-4.08@sha256:b9828be178417e3bc607ef229c00d658316b130c027775f6069f6a7c473de176-MlFront_Thunk.2.4.2.21-f053538f79a18e4c6a4064eb8f48277b038e350a"
2025-09-30 08:03.59: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.08@sha256:b9828be178417e3bc607ef229c00d658316b130c027775f6069f6a7c473de176)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
 (run (network host)
      (shell "opam init --reinit --config .opamrc-sandbox -ni"))
 (run (shell "opam option solver=builtin-0install && opam config report"))
 (env OPAMDOWNLOADJOBS 1)
 (env OPAMERRLOGLEN 0)
 (env OPAMPRECISETRACKING 1)
 (env CI true)
 (env OPAM_REPO_CI true)
 (run (shell "rm -rf opam-repository/"))
 (copy (src .) (dst opam-repository/))
 (run (shell "opam repository set-url --strict default opam-repository/"))
 (run (network host)
      (shell "opam update --depexts || true"))
 (run (shell "opam pin add -k version -yn MlFront_Thunk.2.4.2.21 2.4.2.21"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall MlFront_Thunk.2.4.2.21;\
             \n        res=$?;\
             \n        test \"$res\" != 31 && exit \"$res\";\
             \n        export OPAMCLI=2.0;\
             \n        build_dir=$(opam var prefix)/.opam-switch/build;\
             \n        failed=$(ls \"$build_dir\");\
             \n        partial_fails=\"\";\
             \n        for pkg in $failed; do\
             \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"debian-13\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'MlFront_Thunk.2.4.2.21' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-09-30 08:03.59: Waiting for resource in pool OCluster
2025-09-30 08:04.02: Waiting for worker…
2025-09-30 08:04.02: Got resource from pool OCluster
Building on toxis.caelum.ci.dev
HEAD is now at 542cfd24d9 13 packages from gitlab.com/api/v4/projects/60486861/packages/generic/src/2.4.2.20/MlFront.tar.gz
HEAD is now at dfe27d924d Merge pull request #28613 from kit-ty-kate/opam-2.4-stable-patch
Updating dfe27d924d..f053538f79
Fast-forward
Auto packing the repository in the background for optimum performance.
See "git help gc" for manual housekeeping.
 packages/MlFront_Cache/MlFront_Cache.2.4.2.21/opam | 46 ++++++++++++++++++++
 packages/MlFront_Cli/MlFront_Cli.2.4.2.21/opam     | 37 ++++++++++++++++
 .../MlFront_Codept/MlFront_Codept.2.4.2.21/opam    | 50 ++++++++++++++++++++++
 .../MlFront_Config/MlFront_Config.2.4.2.21/opam    | 41 ++++++++++++++++++
 packages/MlFront_Core/MlFront_Core.2.4.2.21/opam   | 42 ++++++++++++++++++
 .../MlFront_Errors/MlFront_Errors.2.4.2.21/opam    | 41 ++++++++++++++++++
 packages/MlFront_Exec/MlFront_Exec.2.4.2.21/opam   | 50 ++++++++++++++++++++++
 packages/MlFront_Logs/MlFront_Logs.2.4.2.21/opam   | 41 ++++++++++++++++++
 packages/MlFront_Manip/MlFront_Manip.2.4.2.21/opam | 39 +++++++++++++++++
 .../MlFront_Signify/MlFront_Signify.2.4.2.21/opam  | 40 +++++++++++++++++
 packages/MlFront_Thunk/MlFront_Thunk.2.4.2.21/opam | 44 +++++++++++++++++++
 packages/MlFront_Tools/MlFront_Tools.2.4.2.21/opam | 49 +++++++++++++++++++++
 .../MlFront_ZipFile/MlFront_ZipFile.2.4.2.21/opam  | 40 +++++++++++++++++
 13 files changed, 560 insertions(+)
 create mode 100644 packages/MlFront_Cache/MlFront_Cache.2.4.2.21/opam
 create mode 100644 packages/MlFront_Cli/MlFront_Cli.2.4.2.21/opam
 create mode 100644 packages/MlFront_Codept/MlFront_Codept.2.4.2.21/opam
 create mode 100644 packages/MlFront_Config/MlFront_Config.2.4.2.21/opam
 create mode 100644 packages/MlFront_Core/MlFront_Core.2.4.2.21/opam
 create mode 100644 packages/MlFront_Errors/MlFront_Errors.2.4.2.21/opam
 create mode 100644 packages/MlFront_Exec/MlFront_Exec.2.4.2.21/opam
 create mode 100644 packages/MlFront_Logs/MlFront_Logs.2.4.2.21/opam
 create mode 100644 packages/MlFront_Manip/MlFront_Manip.2.4.2.21/opam
 create mode 100644 packages/MlFront_Signify/MlFront_Signify.2.4.2.21/opam
 create mode 100644 packages/MlFront_Thunk/MlFront_Thunk.2.4.2.21/opam
 create mode 100644 packages/MlFront_Tools/MlFront_Tools.2.4.2.21/opam
 create mode 100644 packages/MlFront_ZipFile/MlFront_ZipFile.2.4.2.21/opam

(from ocaml/opam:debian-13-ocaml-4.08@sha256:b9828be178417e3bc607ef229c00d658316b130c027775f6069f6a7c473de176)
2025-09-30 08:04.36 ---> saved as "4f143e25e7620fadf6d4819085e998cd063e4132d1bf4b7e768f2c9645e2385a"

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2025-09-30 08:04.37 ---> saved as "9499f8798c3f7c433d6d02468989da181427adc9fd6fd7e76ae55614c6b4fdb4"

/home/opam: (run (network host)
                 (shell "opam init --reinit --config .opamrc-sandbox -ni"))
Configuring from /home/opam/.opamrc-sandbox, then /home/opam/.opamrc, and finally from built-in defaults.
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.

This version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.2, which can't be reverted.
You may want to back it up before going further.

Continue? [Y/n] y
Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2025-09-30 08:05.01 ---> saved as "6bff396d5577b5019d590fe9c664023e7b8f3fa01aac2312c3623537fc95a00b"

/home/opam: (run (shell "opam option solver=builtin-0install && opam config report"))
Set to 'builtin-0install' the field solver in global configuration
# opam config report
# opam-version         2.4.1
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=debian os-version=13
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 71
# repositories         1 (version-controlled)
# pinned               1 (version)
# current-switch       4.08
# invariant            ["ocaml-base-compiler" {= "4.08.1"}]
# compiler-packages    ocaml-base-compiler.4.08.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.08/lib/ocaml/stublibs:/home/opam/.opam/4.08/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.08.1
2025-09-30 08:05.02 ---> saved as "1e076af9875cf93cb59fbfebd342d50b40f8260db44299c745e2adc2e67b0bd8"

/home/opam: (env OPAMDOWNLOADJOBS 1)

/home/opam: (env OPAMERRLOGLEN 0)

/home/opam: (env OPAMPRECISETRACKING 1)

/home/opam: (env CI true)

/home/opam: (env OPAM_REPO_CI true)

/home/opam: (run (shell "rm -rf opam-repository/"))
2025-09-30 08:05.09 ---> saved as "2ad700d5701647026c0cf5242fcc35dc6ca95d3ccbc30400f86e4a298c667355"

/home/opam: (copy (src .) (dst opam-repository/))
2025-09-30 08:05.34 ---> saved as "fe44c815fc3d22b0c7bc8a1d77cb645e799263a9181d5bc71eaaf7c94e397937"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-09-30 08:05.52 ---> saved as "e8bfaa004937870ca62425d09c77dfced5f79c6a1006d16448d528ee74f7ba09"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian trixie InRelease
- Get:2 http://deb.debian.org/debian trixie-updates InRelease [47.3 kB]
- Get:3 http://deb.debian.org/debian-security trixie-security InRelease [43.4 kB]
- Get:4 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [47.7 kB]
- Fetched 138 kB in 13s (10.6 kB/s)
- Reading package lists...
2025-09-30 08:06.06 ---> saved as "08e7f40a3e9c7a00dc9e7bb2bf31aa9dbd68168b4ebb123b316d06af99365575"

/home/opam: (run (shell "opam pin add -k version -yn MlFront_Thunk.2.4.2.21 2.4.2.21"))
MlFront_Thunk is now pinned to version 2.4.2.21
2025-09-30 08:06.06 ---> saved as "cabb78baa61acf9a9ab2a814881dd58e8db89cf0ec634dc98ea7a88b8ce67e13"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall MlFront_Thunk.2.4.2.21;\
                        \n        res=$?;\
                        \n        test \"$res\" != 31 && exit \"$res\";\
                        \n        export OPAMCLI=2.0;\
                        \n        build_dir=$(opam var prefix)/.opam-switch/build;\
                        \n        failed=$(ls \"$build_dir\");\
                        \n        partial_fails=\"\";\
                        \n        for pkg in $failed; do\
                        \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"debian-13\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'MlFront_Thunk.2.4.2.21' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
MlFront_Thunk.2.4.2.21 is not installed. Install it? [Y/n] y
  * No agreement on the version of ocaml:
    - (invariant) -> ocaml-base-compiler = 4.08.1 -> ocaml = 4.08.1
    - MlFront_Thunk -> ocaml >= 4.14
    You can temporarily relax the switch invariant with `--update-invariant'
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 4.08.1
    - MlFront_Thunk -> ocaml >= 4.14 -> ocaml-variants >= 5.0.0~
  * Missing dependency:
    - MlFront_Thunk -> ocaml >= 4.14 -> ocaml-variants >= 5.0.0~ -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall MlFront_Thunk.2.4.2.21;
        res=$?;
        test "$res" != 31 && exit "$res";
        export OPAMCLI=2.0;
        build_dir=$(opam var prefix)/.opam-switch/build;
        failed=$(ls "$build_dir");
        partial_fails="";
        for pkg in $failed; do
          if opam show -f x-ci-accept-failures: "$pkg" | grep -qF "\"debian-13\""; then
            echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.";
          fi;
          test "$pkg" != 'MlFront_Thunk.2.4.2.21' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2025-09-30 08:06.45: Job failed: Failed: Build failed
2025-09-30 08:06.45: Log analysis:
2025-09-30 08:06.45: >>> 
No solution found, exiting
 (score = 100)
2025-09-30 08:06.45: [SKIP] Package not available