(not at the head of any monitored branch or PR)
2025-04-10 22:57.32: New job: build core_unix.v0.17.0, using opam 2.1
                              from https://github.com/ocaml/opam-repository.git#refs/pull/27742/head (18a30f1534ecda31357ccef7b9e06a5892ca86cf)
                              on debian-12-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/27742/head" && git reset --hard 18a30f15
git fetch origin master
git merge --no-edit 4592800a5b7fe3cf52f4afb459b13d9138a079d4
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-4.14@sha256:3825d47b4ad1caca6af1946897917932fde6be9b937ee81c758ab10fa3622cc8
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn core_unix.v0.17.0 v0.17.0
RUN opam reinstall core_unix.v0.17.0; \
    res=$?; \
    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 "$pkg" != 'core_unix.v0.17.0' && partial_fails="$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 .

2025-04-10 22:57.32: Using cache hint "ocaml/opam:debian-12-ocaml-4.14@sha256:3825d47b4ad1caca6af1946897917932fde6be9b937ee81c758ab10fa3622cc8-core_unix.v0.17.0-18a30f1534ecda31357ccef7b9e06a5892ca86cf"
2025-04-10 22:57.32: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-4.14@sha256:3825d47b4ad1caca6af1946897917932fde6be9b937ee81c758ab10fa3622cc8)
 (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 core_unix.v0.17.0 v0.17.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall core_unix.v0.17.0;\
             \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 \"$pkg\" != 'core_unix.v0.17.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-04-10 22:57.32: Waiting for resource in pool OCluster
2025-04-10 22:57.32: Waiting for worker…
2025-04-10 23:02.49: Got resource from pool OCluster
Building on x86-bm-c8.sw.ocaml.org
All commits already cached
Updating files:  75% (17254/22850)
Updating files:  76% (17366/22850)
Updating files:  77% (17595/22850)
Updating files:  78% (17823/22850)
Updating files:  79% (18052/22850)
Updating files:  80% (18280/22850)
Updating files:  81% (18509/22850)
Updating files:  82% (18737/22850)
Updating files:  83% (18966/22850)
Updating files:  84% (19194/22850)
Updating files:  85% (19423/22850)
Updating files:  86% (19651/22850)
Updating files:  87% (19880/22850)
Updating files:  88% (20108/22850)
Updating files:  89% (20337/22850)
Updating files:  90% (20565/22850)
Updating files:  91% (20794/22850)
Updating files:  92% (21022/22850)
Updating files:  93% (21251/22850)
Updating files:  94% (21479/22850)
Updating files:  95% (21708/22850)
Updating files:  96% (21936/22850)
Updating files:  97% (22165/22850)
Updating files:  98% (22393/22850)
Updating files:  99% (22622/22850)
Updating files: 100% (22850/22850)
Updating files: 100% (22850/22850), done.
HEAD is now at 4592800a5b Package mazeppa.0.5.2 (#27731)
Updating 4592800a5b..18a30f1534
Fast-forward
 packages/core_unix/core_unix.v0.17.0/opam | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(from ocaml/opam:debian-12-ocaml-4.14@sha256:3825d47b4ad1caca6af1946897917932fde6be9b937ee81c758ab10fa3622cc8)
Unable to find image 'ocaml/opam:debian-12-ocaml-4.14@sha256:3825d47b4ad1caca6af1946897917932fde6be9b937ee81c758ab10fa3622cc8' locally
docker.io/ocaml/opam@sha256:3825d47b4ad1caca6af1946897917932fde6be9b937ee81c758ab10fa3622cc8: Pulling from ocaml/opam
cebf26df7530: Pulling fs layer
cebf26df7530: Verifying Checksum
cebf26df7530: Download complete
cebf26df7530: Pull complete
Digest: sha256:3825d47b4ad1caca6af1946897917932fde6be9b937ee81c758ab10fa3622cc8
Status: Downloaded newer image for ocaml/opam@sha256:3825d47b4ad1caca6af1946897917932fde6be9b937ee81c758ab10fa3622cc8
2025-04-10 23:02.56 ---> using "4c3e22bc3efd1b2a6e8f284d263c227d51413989d1acf48965f437e28368a166" 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"))
2025-04-10 23:02.56 ---> using "30202ba5a9aee86a0e3b7f4d6491e272ddb57cbe0e6de9917bad961a897c7606" 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
2025-04-10 23:02.56 ---> using "2e016e69925d78e7b84d7b3fba6338fe0a7ec9fb3e8f72f26cf93302b6c98255" 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                 39
# 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
2025-04-10 23:02.56 ---> using "1ad8e843dcf4e5f5e3dd573902ade7ef653357228d65cea5450de4d2542c5076" 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/"))
2025-04-10 23:02.56 ---> using "33fa286d83bb5e57d726e8013d2438df30e0ecf488a62bc868d792b5c329a05b" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-04-10 23:03.08 ---> saved as "c0a8678531600579be8535510a78a526209eff3e475cba8128384a0a68944b9c"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-04-10 23:03.26 ---> saved as "f9f821afc9c3e234abdc8ab82a8279bc7a1737c554a3b41f566be0f1a55d6b1c"

/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 [252 kB]
- Fetched 356 kB in 0s (976 kB/s)
- Reading package lists...
- 
2025-04-10 23:03.28 ---> saved as "3c4cddf06fa727646be564786f59bfcb0154ba0ac42649965cdd587c992862e8"

/home/opam: (run (shell "opam pin add -k version -yn core_unix.v0.17.0 v0.17.0"))
core_unix is now pinned to version v0.17.0
2025-04-10 23:03.29 ---> saved as "a61d907f7de6e0236e297304660bbdae4533004cfa4711bba350be24ad27eabc"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall core_unix.v0.17.0;\
                        \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 \"$pkg\" != 'core_unix.v0.17.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
core_unix.v0.17.0 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
    - core_unix >= v0.17.0 -> ocaml >= 5.1.0
    You can temporarily relax the switch invariant with `--update-invariant'
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 4.14.2
    - core_unix >= v0.17.0 -> ocaml >= 5.1.0 -> ocaml-variants >= 5.1.1~
  * Missing dependency:
    - core_unix >= v0.17.0 -> ocaml >= 5.1.0 -> ocaml-variants >= 5.1.1~ -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall core_unix.v0.17.0;
        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 "$pkg" != 'core_unix.v0.17.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2025-04-10 23:03.50: Job failed: Failed: Build failed
2025-04-10 23:03.50: Log analysis:
2025-04-10 23:03.50: >>> 
No solution found, exiting
 (score = 100)
2025-04-10 23:03.50: [SKIP] Package not available