(for PR #27965)

2025-06-12 09:18.38: New job: build ancient.0.10.0, using opam 2.1
                              from https://github.com/ocaml/opam-repository.git#refs/pull/27965/head (e8b423fa48aadb0160c2cb6c31b7ae6bb2b33f02)
                              on debian-12-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/27965/head" && git reset --hard e8b423fa
git fetch origin master
git merge --no-edit 391f82e9da01a13ff4ca7414df22df13c440bd0e
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-4.14@sha256:483ad21d779c01615f15084a5f82173baaa47820587729faca9fb7ad645f50be
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn ancient.0.10.0 0.10.0
RUN opam reinstall ancient.0.10.0; \
    res=$?; \
    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-12\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'ancient.0.10.0' && partial_fails="$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 .

2025-06-12 09:18.38: Using cache hint "ocaml/opam:debian-12-ocaml-4.14@sha256:483ad21d779c01615f15084a5f82173baaa47820587729faca9fb7ad645f50be-ancient.0.10.0-e8b423fa48aadb0160c2cb6c31b7ae6bb2b33f02"
2025-06-12 09:18.38: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-4.14@sha256:483ad21d779c01615f15084a5f82173baaa47820587729faca9fb7ad645f50be)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/bin/opam-2.1 /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 ancient.0.10.0 0.10.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall ancient.0.10.0;\
             \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-12\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'ancient.0.10.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-06-12 09:18.38: Waiting for resource in pool OCluster
2025-06-12 10:07.26: Waiting for worker…
2025-06-12 10:10.34: Got resource from pool OCluster
Building on doris.caelum.ci.dev
All commits already cached
Updating files:  93% (21809/23250)
Updating files:  94% (21855/23250)
Updating files:  95% (22088/23250)
Updating files:  96% (22320/23250)
Updating files:  97% (22553/23250)
Updating files:  98% (22785/23250)
Updating files:  99% (23018/23250)
Updating files: 100% (23250/23250)
Updating files: 100% (23250/23250), done.
HEAD is now at 391f82e9da Merge pull request #28013 from mbarbin/opam-publish-volgo.0.0.18
Merge made by the 'ort' strategy.
Auto packing the repository in background for optimum performance.
See "git help gc" for manual housekeeping.
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

 packages/ancient/ancient.0.10.0/opam | 52 ++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 packages/ancient/ancient.0.10.0/opam

(from ocaml/opam:debian-12-ocaml-4.14@sha256:483ad21d779c01615f15084a5f82173baaa47820587729faca9fb7ad645f50be)
2025-06-12 10:11.20 ---> using "d2a5d53d37f66f6f5c7aad091614b30735c874c67d8308d229ed194879752021" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam"))
2025-06-12 10:11.20 ---> using "f705527fb8641e9165c822e689ef05845f103ae8715c0df521c4e57589719663" from cache

/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 development version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.1, 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
2025-06-12 10:11.20 ---> using "3119d3159772550ef840b745b4014e8d2747c112e50555d75b555ebd717f849d" from cache

/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         2.1.6 (263921263e1f745613e2882745114b7b08f3608b) 
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=debian os-version=12
# solver               builtin-0install
# install-criteria     
# upgrade-criteria     
# jobs                 71
# repositories         1 (version-controlled)
# pinned               1 (version)
# current-switch       4.14
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.14/lib/ocaml/stublibs:/home/opam/.opam/4.14/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.14.2
2025-06-12 10:11.20 ---> using "d8885c7847bd921cef731667b8e52b15af932a8b8adace351666162824d41795" from cache

/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/"))
2025-06-12 10:11.20 ---> using "369ae6de739f5df20e992ebf7ee63268116b9bfe270183138a562a8b720bc1f5" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-06-12 10:11.35 ---> saved as "018cf5c84e654384cdfc3407bfab920c7957b6787db70107ef6219151cf5662e"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-06-12 10:11.50 ---> saved as "9ae80930845730277e1e5ddc5e0b79a73e8684b59161ac847def4c31c462883e"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian bookworm InRelease
- Get:2 http://deb.debian.org/debian bookworm-updates InRelease [55.4 kB]
- Get:3 http://deb.debian.org/debian-security bookworm-security InRelease [48.0 kB]
- Get:4 http://deb.debian.org/debian-security bookworm-security/main amd64 Packages [266 kB]
- Fetched 369 kB in 0s (1036 kB/s)
- Reading package lists...
2025-06-12 10:11.52 ---> saved as "5fd8af9b9110108cc00217f46c6efcea1db97948f9248d19d405c1365874c097"

/home/opam: (run (shell "opam pin add -k version -yn ancient.0.10.0 0.10.0"))
ancient is now pinned to version 0.10.0
2025-06-12 10:11.53 ---> saved as "43bb03407662b0de31498a39845fa15bffe5c0425c77ad844bd7a708a3806d20"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall ancient.0.10.0;\
                        \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-12\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'ancient.0.10.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
ancient.0.10.0 is not installed. Install it? [Y/n] y
  * No agreement on the version of ocaml:
    - (invariant) -> ocaml-base-compiler = 4.14.2 -> ocaml = 4.14.2
    - ancient >= 0.10.0 -> ocaml >= 5
    You can temporarily relax the switch invariant with `--update-invariant'
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 4.14.2
    - ancient >= 0.10.0 -> ocaml-option-nnp -> ocaml-variants >= 4.12.0~
  * Missing dependency:
    - ancient >= 0.10.0 -> ocaml >= 5 -> ocaml-variants >= 5.0.0~ -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall ancient.0.10.0;
        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-12\""; then
            echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.";
          fi;
          test "$pkg" != 'ancient.0.10.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2025-06-12 10:12.24: Job failed: Failed: Build failed
2025-06-12 10:12.24: Log analysis:
2025-06-12 10:12.24: >>> 
No solution found, exiting
 (score = 100)
2025-06-12 10:12.24: [SKIP] Package not available