(for PR #27814)

2025-04-24 14:19.28: New job: build core_unix.v0.17.1, using opam 2.3
                              from https://github.com/ocaml/opam-repository.git#refs/pull/27814/head (ff55db326db9c2958d536c00557c75e835658f3e)
                              on debian-12-ocaml-4.10/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/27814/head" && git reset --hard ff55db32
git fetch origin master
git merge --no-edit 8106bcf57fc33218275bbf0d02e725f4e9fcd0f6
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-4.10@sha256:67c5b68f98c4e1cac86f17cb6db59e1a40b92ddfe23475041b687bf9f9eb74bf
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn core_unix.v0.17.1 v0.17.1
RUN opam reinstall core_unix.v0.17.1; \
    res=$?; \
    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 "$pkg" != 'core_unix.v0.17.1' && partial_fails="$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 .

2025-04-24 14:19.28: Using cache hint "ocaml/opam:debian-12-ocaml-4.10@sha256:67c5b68f98c4e1cac86f17cb6db59e1a40b92ddfe23475041b687bf9f9eb74bf-core_unix.v0.17.1-ff55db326db9c2958d536c00557c75e835658f3e"
2025-04-24 14:19.28: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-4.10@sha256:67c5b68f98c4e1cac86f17cb6db59e1a40b92ddfe23475041b687bf9f9eb74bf)
 (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 core_unix.v0.17.1 v0.17.1"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall core_unix.v0.17.1;\
             \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 \"$pkg\" != 'core_unix.v0.17.1' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-04-24 14:19.28: Waiting for resource in pool OCluster
2025-04-24 14:19.29: Waiting for worker…
2025-04-24 14:19.29: Got resource from pool OCluster
Building on x86-bm-c2.sw.ocaml.org
HEAD is now at 60cf794da6 Add openjdk on alpine & windows
HEAD is now at 8106bcf57f Merge pull request #27808 from Octachron/Ocaml_5.4.0_branching
Updating 8106bcf57f..ff55db326d
Fast-forward
 packages/core_unix/core_unix.v0.17.1/opam | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(from ocaml/opam:debian-12-ocaml-4.10@sha256:67c5b68f98c4e1cac86f17cb6db59e1a40b92ddfe23475041b687bf9f9eb74bf)
Unable to find image 'ocaml/opam:debian-12-ocaml-4.10@sha256:67c5b68f98c4e1cac86f17cb6db59e1a40b92ddfe23475041b687bf9f9eb74bf' locally
docker.io/ocaml/opam@sha256:67c5b68f98c4e1cac86f17cb6db59e1a40b92ddfe23475041b687bf9f9eb74bf: Pulling from ocaml/opam
068470372880: Pulling fs layer
068470372880: Verifying Checksum
068470372880: Download complete
068470372880: Pull complete
Digest: sha256:67c5b68f98c4e1cac86f17cb6db59e1a40b92ddfe23475041b687bf9f9eb74bf
Status: Downloaded newer image for ocaml/opam@sha256:67c5b68f98c4e1cac86f17cb6db59e1a40b92ddfe23475041b687bf9f9eb74bf
2025-04-24 14:19.33 ---> using "eb2cc2e39406438c419d416dd380900a7b2767f89fcf64a9d40a3c340b1307b9" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam"))
2025-04-24 14:19.33 ---> using "90ebcd99a32104cae0bdef14da5c2c11cf9d7400c2a839aff159c46f1404237e" 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 2.2, 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
2025-04-24 14:19.33 ---> using "7c63b01bfe924667bcf26d3e5ca0c9a9555d0b844010e23feda1c7ad5a6ce902" 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         2.3.0 (35acd0c5abc5e66cdbd5be16ba77aa6c33a4c724)
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=debian os-version=12
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 39
# repositories         1 (version-controlled)
# pinned               1 (version)
# current-switch       4.10
# invariant            ["ocaml-base-compiler" {= "4.10.2"}]
# compiler-packages    ocaml-base-compiler.4.10.2
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.10/lib/ocaml/stublibs:/home/opam/.opam/4.10/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.10.2
2025-04-24 14:19.33 ---> using "0eda48f95afcb2bea030f2a83864aa6d3cb56e6698acfa0a1cefb1b657b0430b" 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/"))
2025-04-24 14:19.33 ---> using "65a3f97a5db33ded8dc3e94c876a7b790901fa234f92b3f3f65b4ed6ad33940a" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-04-24 14:19.41 ---> saved as "3221f4f516922d22d05d1ca1f3580012cc1f089721b96680eb184c77f25ec187"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-04-24 14:20.03 ---> saved as "3288e54d37f75a397c0ab67a9a58decc63014cfff9e41b67f7b53b6605c0345d"

/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 [260 kB]
- Fetched 363 kB in 0s (1253 kB/s)
- Reading package lists...
- 
2025-04-24 14:20.04 ---> saved as "9c6c1f99882e66a2a9551910833ed665651c2b0e6e4a494daa7957c8708822e4"

/home/opam: (run (shell "opam pin add -k version -yn core_unix.v0.17.1 v0.17.1"))
core_unix is now pinned to version v0.17.1
2025-04-24 14:20.05 ---> saved as "d3e296c6d7b4742cd511886d499d20dfa2ad64f0584cd4b503c9c95548b4b0bd"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall core_unix.v0.17.1;\
                        \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 \"$pkg\" != 'core_unix.v0.17.1' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
core_unix.v0.17.1 is not installed. Install it? [y/n] y
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 4.10.2
    - core_unix >= v0.17.1 -> ocaml >= 5.1.0 -> ocaml-variants < 5.1.2~
    You can temporarily relax the switch invariant with `--update-invariant'
  * Missing dependency:
    - core_unix >= v0.17.1 -> ocaml >= 5.1.0 -> ocaml-variants < 5.1.1~ -> xenbigarray
    unknown package
  * Missing dependency:
    - core_unix >= v0.17.1 -> ocaml >= 5.1.0 -> ocaml-variants < 5.1.1~ -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'
  * Missing dependency:
    - core_unix >= v0.17.1 -> ocaml >= 5.1.0 -> ocaml-variants >= 5.1.2~ -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall core_unix.v0.17.1;
        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 "$pkg" != 'core_unix.v0.17.1' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2025-04-24 14:20.24: Job failed: Failed: Build failed
2025-04-24 14:20.24: Log analysis:
2025-04-24 14:20.24: >>> 
No solution found, exiting
 (score = 100)
2025-04-24 14:20.24: [SKIP] Package not available