(for PR #28866)

2025-11-13 23:39.37: New job: build melange.6.0.0-414, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/28866/head (780331e30462ca6bc8d8e82d472fe1019e01770d)
                              on centos-9-ocaml-5.4/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/28866/head" && git reset --hard 780331e3
git fetch origin master
git merge --no-edit 48c9f6e789883c3dbb4ff03be0529c4936e40316
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:centos-9-ocaml-5.4@sha256:4ff6eaf91a3dc04a84bbe30f720632fd35a391fd7e1ad02090894c030fcdcbdf
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn melange.6.0.0-414 6.0.0-414
RUN opam reinstall melange.6.0.0-414; \
    res=$?; \
    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 "\"centos-9\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'melange.6.0.0-414' && partial_fails="$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 .

2025-11-13 23:39.37: Using cache hint "ocaml/opam:centos-9-ocaml-5.4@sha256:4ff6eaf91a3dc04a84bbe30f720632fd35a391fd7e1ad02090894c030fcdcbdf-melange.6.0.0-414-780331e30462ca6bc8d8e82d472fe1019e01770d"
2025-11-13 23:39.37: Using OBuilder spec:
((from ocaml/opam:centos-9-ocaml-5.4@sha256:4ff6eaf91a3dc04a84bbe30f720632fd35a391fd7e1ad02090894c030fcdcbdf)
 (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 melange.6.0.0-414 6.0.0-414"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall melange.6.0.0-414;\
             \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 \"\\\"centos-9\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'melange.6.0.0-414' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-11-13 23:39.37: Waiting for resource in pool OCluster
2025-11-13 23:39.37: Waiting for worker…
2025-11-13 23:40.38: Got resource from pool OCluster
Building on toxis.caelum.ci.dev
All commits already cached
HEAD is now at 48c9f6e789 Merge pull request #28889 from jserot/opam-publish-rfsm.2.2
Merge made by the 'ort' strategy.
 packages/melange/melange.6.0.0-414/opam | 41 +++++++++++++++++++++++++++++++++
 packages/melange/melange.6.0.0-51/opam  | 41 +++++++++++++++++++++++++++++++++
 packages/melange/melange.6.0.0-52/opam  | 41 +++++++++++++++++++++++++++++++++
 packages/melange/melange.6.0.0-53/opam  | 41 +++++++++++++++++++++++++++++++++
 packages/melange/melange.6.0.0-54/opam  | 41 +++++++++++++++++++++++++++++++++
 5 files changed, 205 insertions(+)
 create mode 100644 packages/melange/melange.6.0.0-414/opam
 create mode 100644 packages/melange/melange.6.0.0-51/opam
 create mode 100644 packages/melange/melange.6.0.0-52/opam
 create mode 100644 packages/melange/melange.6.0.0-53/opam
 create mode 100644 packages/melange/melange.6.0.0-54/opam

(from ocaml/opam:centos-9-ocaml-5.4@sha256:4ff6eaf91a3dc04a84bbe30f720632fd35a391fd7e1ad02090894c030fcdcbdf)
2025-11-13 23:41.37 ---> using "eece0ee759113f9447becf3b30dd4249f4d7687d01c11c4512fbc8c86419779f" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2025-11-13 23:41.37 ---> using "392c691f5646d6ef70bb47fd2905a73a7700f7ad2037d8c614d97b45549b91b1" 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 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
2025-11-13 23:41.37 ---> using "371a15af04227da9a433565ef0ac02d0896bf811450f0047612e4f9e1dff7bdc" 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         2.5.0~alpha1
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=centos os-version=9
# 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       5.4
# invariant            ["ocaml-base-compiler" {>= "5.4.0"}]
# compiler-packages    ocaml-base-compiler.5.4.0, ocaml-compiler.5.4.0, ocaml-options-vanilla.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/5.4/lib/ocaml/stublibs:/home/opam/.opam/5.4/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       5.4.0
2025-11-13 23:41.37 ---> using "cd4807205ddc4da8666819a85a26b0634d63572d3d7b871e275755e9a2e267c9" 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/"))
2025-11-13 23:41.37 ---> using "bf9fa0dc961aebd1fdbdfb7186ef667308f4c39d03be264f475e3aec2364ad1a" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-11-13 23:41.45 ---> saved as "3b55583253f0f0b874328527a7dc3a1d47237dca7416b5e459a9310712d84fb5"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-11-13 23:42.03 ---> saved as "8fff3d4ee7a61ecde78bdd39860c499f34f035d79608b5653f65e44fcd65766e"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "yum" "makecache"
- CentOS Stream 9 - BaseOS                        119 kB/s |  14 kB     00:00    
- CentOS Stream 9 - BaseOS                         13 MB/s | 8.8 MB     00:00    
- CentOS Stream 9 - AppStream                     133 kB/s |  14 kB     00:00    
- CentOS Stream 9 - AppStream                     7.3 MB/s |  25 MB     00:03    
- CentOS Stream 9 - CRB                           124 kB/s |  14 kB     00:00    
- CentOS Stream 9 - CRB                           1.8 MB/s | 7.3 MB     00:04    
- CentOS Stream 9 - Extras packages                24 kB/s |  16 kB     00:00    
- Metadata cache created.
2025-11-13 23:42.27 ---> saved as "ead267c8e506c87b676e7523d1b6edade5197f791fae3e0f53f2d06a9201f907"

/home/opam: (run (shell "opam pin add -k version -yn melange.6.0.0-414 6.0.0-414"))
melange is now pinned to version 6.0.0-414
2025-11-13 23:42.27 ---> saved as "9aff07c6d9b39ebd3ed7efe787437df5fda59011073100f060bc2e4f8e356098"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall melange.6.0.0-414;\
                        \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 \"\\\"centos-9\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'melange.6.0.0-414' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
melange.6.0.0-414 is not installed. Install it? [Y/n] y
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler >= 5.4.0
    - melange >= 6.0.0-414 -> ocaml < 4.15 -> dkml-base-compiler
    You can temporarily relax the switch invariant with `--update-invariant'
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler >= 5.4.0
    - melange >= 6.0.0-414 -> ocaml < 4.15 -> ocaml-variants (< 4.05.2~ | >= 4.06.0)
  * Missing dependency:
    - melange >= 6.0.0-414 -> ocaml < 4.15 -> ocaml-base-compiler (<= 3.07+1 | = 3.07+2 | = 3.08.0 | = 3.08.1 | = 3.08.2 | = 3.08.3 | = 3.08.4 | = 3.09.0) | ocaml-system (<= 3.07+1 | = 3.07+2 | >= 3.08.0) | ocaml-variants < 3.09.1~
    not available because the package is pinned to version 5.4.0
    unmet availability conditions, e.g. 'sys-ocaml-version = "5.4.0" & (os != "win32" | sys-ocaml-libc = "msvc")'
    no matching version
  * Missing dependency:
    - melange >= 6.0.0-414 -> ocaml < 4.15 -> ocaml-variants >= 4.06.0 -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'
  * Missing dependency:
    - melange >= 6.0.0-414 -> ocaml < 4.15 -> ocaml-variants >= 4.06.0 -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall melange.6.0.0-414;
        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 "\"centos-9\""; then
            echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.";
          fi;
          test "$pkg" != 'melange.6.0.0-414' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2025-11-13 23:43.23: Job failed: Failed: Build failed
2025-11-13 23:43.23: Log analysis:
2025-11-13 23:43.23: >>> 
No solution found, exiting
 (score = 100)
2025-11-13 23:43.23: [SKIP] Package not available