(for PR #27915)

2025-05-23 15:23.55: New job: build ocaml.5.4.0, using opam 2.3
                              from https://github.com/ocaml/opam-repository.git#refs/pull/27915/head (fe74d4a82a3b007f1e757e592b5afa175d7438cd)
                              on ubuntu-20.04-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/27915/head" && git reset --hard fe74d4a8
git fetch origin master
git merge --no-edit d4d1aa63ab7830b868cb8cbd85e076c699d8eb06
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:ubuntu-20.04-ocaml-4.14@sha256:7bb623c1beba7b45633f2fca2e03816359868e6ae47d93ac650fb458020d338d
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn ocaml.5.4.0 5.4.0
RUN opam reinstall ocaml.5.4.0; \
    res=$?; \
    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 "\"ubuntu-20.04\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'ocaml.5.4.0' && partial_fails="$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 .

2025-05-23 15:23.55: Using cache hint "ocaml/opam:ubuntu-20.04-ocaml-4.14@sha256:7bb623c1beba7b45633f2fca2e03816359868e6ae47d93ac650fb458020d338d-ocaml.5.4.0-fe74d4a82a3b007f1e757e592b5afa175d7438cd"
2025-05-23 15:23.55: Using OBuilder spec:
((from ocaml/opam:ubuntu-20.04-ocaml-4.14@sha256:7bb623c1beba7b45633f2fca2e03816359868e6ae47d93ac650fb458020d338d)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/bin/opam-2.3 /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 ocaml.5.4.0 5.4.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall ocaml.5.4.0;\
             \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 \"\\\"ubuntu-20.04\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'ocaml.5.4.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-05-23 15:23.55: Waiting for resource in pool OCluster
2025-05-23 15:24.21: Waiting for worker…
2025-05-23 15:25.06: Got resource from pool OCluster
Building on toxis.caelum.ci.dev
All commits already cached
Updating files:  94% (21725/23089)
Updating files:  95% (21935/23089)
Updating files:  96% (22166/23089)
Updating files:  97% (22397/23089)
Updating files:  98% (22628/23089)
Updating files:  99% (22859/23089)
Updating files: 100% (23089/23089)
Updating files: 100% (23089/23089), done.
HEAD is now at d4d1aa63ab Merge pull request #27896 from aqjune/hol
Updating d4d1aa63ab..fe74d4a82a
Fast-forward
 .../ocaml-base-compiler.5.4.0~alpha1/opam          |  29 +++++
 .../ocaml-compiler.5.4.0~alpha1/opam               | 127 +++++++++++++++++++++
 .../ocaml-variants.5.4.0~alpha1+options/opam       |  26 +++++
 packages/ocaml/ocaml.5.4.0/opam                    |  30 ++---
 4 files changed, 199 insertions(+), 13 deletions(-)
 create mode 100644 packages/ocaml-base-compiler/ocaml-base-compiler.5.4.0~alpha1/opam
 create mode 100644 packages/ocaml-compiler/ocaml-compiler.5.4.0~alpha1/opam
 create mode 100644 packages/ocaml-variants/ocaml-variants.5.4.0~alpha1+options/opam

(from ocaml/opam:ubuntu-20.04-ocaml-4.14@sha256:7bb623c1beba7b45633f2fca2e03816359868e6ae47d93ac650fb458020d338d)
2025-05-23 15:26.35 ---> saved as "89e84d13451360886361e81e8cd5e4d34fba59ff7a7e72cfbcbdbd08986db623"

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam"))
2025-05-23 15:26.35 ---> saved as "2913937e8dfab56eaadda9972037741176baec4d2b47511c12842bcee66e7eb8"

/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 2.2, 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
2025-05-23 15:27.15 ---> saved as "c3068c72b4b1614d556ab595753559acec605b5d2e555e62dcf0f33556d65678"

/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         2.3.0 (35acd0c5abc5e66cdbd5be16ba77aa6c33a4c724)
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=ubuntu os-version=20.04
# 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       4.14
# invariant            ["ocaml-base-compiler" {= "4.14.2"}]
# compiler-packages    ocaml-base-compiler.4.14.2, ocaml-options-vanilla.1
# 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
2025-05-23 15:27.16 ---> saved as "c4da92bc84bb7fe4d84ba0d405fdf86ec8e3aaa955be629b363dd319e691a0d5"

/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/"))
2025-05-23 15:27.23 ---> saved as "93ad4a32f09553f96b9b6fcc59d59e8c75d8c39a3417813c336dd5a7862f46c9"

/home/opam: (copy (src .) (dst opam-repository/))
2025-05-23 15:27.47 ---> saved as "df2feebdab820346ee90de1e21771433ca8c16c664f683308261c81971cd285d"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-05-23 15:28.15 ---> saved as "8e6c3ef623869d65bb227a6ad4130905fbf13f60599ba964bd425896cd5477f9"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Get:1 http://security.ubuntu.com/ubuntu focal-security InRelease [128 kB]
- Hit:2 http://archive.ubuntu.com/ubuntu focal InRelease
- Get:3 http://archive.ubuntu.com/ubuntu focal-updates InRelease [128 kB]
- Get:4 http://archive.ubuntu.com/ubuntu focal-backports InRelease [128 kB]
- Get:5 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages [4421 kB]
- Get:6 http://archive.ubuntu.com/ubuntu focal-updates/restricted amd64 Packages [4979 kB]
- Get:7 http://security.ubuntu.com/ubuntu focal-security/restricted amd64 Packages [4782 kB]
- Get:8 http://security.ubuntu.com/ubuntu focal-security/universe amd64 Packages [1308 kB]
- Get:9 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [1599 kB]
- Get:10 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [4911 kB]
- Fetched 22.4 MB in 2s (12.5 MB/s)
- Reading package lists...
- 
2025-05-23 15:28.18 ---> saved as "74d9cc48e05b371be39cbdeb32839f96ae52928d7958a27d56555ab22b202345"

/home/opam: (run (shell "opam pin add -k version -yn ocaml.5.4.0 5.4.0"))
ocaml is now pinned to version 5.4.0
2025-05-23 15:28.19 ---> saved as "463211c950461ff45fd6f796b6533d23350085758fbde79d16122868ca8c2189"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall ocaml.5.4.0;\
                        \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 \"\\\"ubuntu-20.04\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'ocaml.5.4.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
ocaml.5.4.0 is not installed. Install it? [y/n] y
  * Missing dependency:
    - (invariant) -> ocaml-base-compiler = 4.14.2 -> ocaml = 4.14.2 -> ocaml.4.14.2: no longer available

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall ocaml.5.4.0;
        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 "\"ubuntu-20.04\""; then
            echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.";
          fi;
          test "$pkg" != 'ocaml.5.4.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2025-05-23 15:28.44: Job failed: Failed: Build failed
2025-05-23 15:28.44: Log analysis:
2025-05-23 15:28.44: >>> 
No solution found, exiting
 (score = 100)
2025-05-23 15:28.44: [SKIP] Package not available