(not at the head of any monitored branch or PR)
2025-03-11 12:04.26: New job: build melange-json.2.0.0, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/27606/head (b4fe13ada701b14e900bf7bc4653de286fd2c76e)
                              on debian-12-ocaml-4.05/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/27606/head" && git reset --hard b4fe13ad
git fetch origin master
git merge --no-edit 8f63148a9025a7b775a069a6c0b0385c22ad51d3
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-4.05@sha256:8e7aa6ba7099c574e311ec00b67ff3a011143f86c7033c202040119de2dd8c66
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn melange-json.2.0.0 2.0.0
RUN opam reinstall melange-json.2.0.0; \
    res=$?; \
    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 "$pkg" != 'melange-json.2.0.0' && partial_fails="$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 .

2025-03-11 12:04.26: Using cache hint "ocaml/opam:debian-12-ocaml-4.05@sha256:8e7aa6ba7099c574e311ec00b67ff3a011143f86c7033c202040119de2dd8c66-melange-json.2.0.0-b4fe13ada701b14e900bf7bc4653de286fd2c76e"
2025-03-11 12:04.26: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-4.05@sha256:8e7aa6ba7099c574e311ec00b67ff3a011143f86c7033c202040119de2dd8c66)
 (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-json.2.0.0 2.0.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall melange-json.2.0.0;\
             \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 \"$pkg\" != 'melange-json.2.0.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-03-11 12:04.26: Waiting for resource in pool OCluster
2025-03-11 12:04.29: Waiting for worker…
2025-03-11 12:04.29: Got resource from pool OCluster
Building on x86-bm-c3.sw.ocaml.org
All commits already cached
Updating files:  73% (16686/22621)
Updating files:  74% (16740/22621)
Updating files:  75% (16966/22621)
Updating files:  76% (17192/22621)
Updating files:  77% (17419/22621)
Updating files:  78% (17645/22621)
Updating files:  79% (17871/22621)
Updating files:  80% (18097/22621)
Updating files:  81% (18324/22621)
Updating files:  82% (18550/22621)
Updating files:  83% (18776/22621)
Updating files:  84% (19002/22621)
Updating files:  85% (19228/22621)
Updating files:  86% (19455/22621)
Updating files:  87% (19681/22621)
Updating files:  88% (19907/22621)
Updating files:  89% (20133/22621)
Updating files:  90% (20359/22621)
Updating files:  91% (20586/22621)
Updating files:  92% (20812/22621)
Updating files:  93% (21038/22621)
Updating files:  94% (21264/22621)
Updating files:  95% (21490/22621)
Updating files:  96% (21717/22621)
Updating files:  97% (21943/22621)
Updating files:  98% (22169/22621)
Updating files:  99% (22395/22621)
Updating files: 100% (22621/22621)
Updating files: 100% (22621/22621), done.
HEAD is now at 8f63148a90 Merge pull request #27598 from jim-portegies/opam-publish-coq-waterproof.2.2.0-8.20
Updating 8f63148a90..b4fe13ada7
Fast-forward
 .../melange-atdgen-codec-runtime.1.0.0/opam        |  2 +-
 .../melange-atdgen-codec-runtime.3.0.0/opam        |  2 +-
 .../melange-json-native.2.0.0/opam                 | 42 +++++++++++++++++++
 packages/melange-json/melange-json.2.0.0/opam      | 47 ++++++++++++++++++++++
 4 files changed, 91 insertions(+), 2 deletions(-)
 create mode 100644 packages/melange-json-native/melange-json-native.2.0.0/opam
 create mode 100644 packages/melange-json/melange-json.2.0.0/opam

(from ocaml/opam:debian-12-ocaml-4.05@sha256:8e7aa6ba7099c574e311ec00b67ff3a011143f86c7033c202040119de2dd8c66)
2025-03-11 12:04.37 ---> using "d576c8e51ff761069973b4bd92fac45f2cf83d92debb87a325a117dbc50db40b" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2025-03-11 12:04.37 ---> using "cce7cdb0ac31c67429c5c904f57ed3b792e6200d3065fd070772f6daab9b1399" 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 ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[opam-repository-archive] synchronised from git+https://github.com/ocaml/opam-repository-archive
[default] synchronised from file:///home/opam/opam-repository
2025-03-11 12:04.37 ---> using "e7132153ee800ef746bd00ec2058eac331680632203a8cd26c04de2021445580" 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         2.4.0~alpha1~dev (f1cf50f2711981a605f81a80c68b73774d5841ff)
# 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 (local), 1 (version-controlled)
# pinned               1 (version)
# current-switch       4.05
# invariant            ["ocaml-base-compiler" {= "4.05.0"}]
# compiler-packages    ocaml-base-compiler.4.05.0
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.05/lib/ocaml/stublibs:/home/opam/.opam/4.05/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.05.0
2025-03-11 12:04.37 ---> using "d3d0dc05e5a64135786f9c804f1eee51278a30ded2c7d03cb1323d772f601ad9" 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/"))
2025-03-11 12:04.37 ---> using "6154fb0819e790edd44ab9dbfebc22af06b480a97b72ddce8ccb43581ef140c9" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-03-11 12:04.50 ---> saved as "a6f174edcdc9a094752573a8afd0e7b964de3e08fb9a37ee8c211c6c835e84c9"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-03-11 12:05.35 ---> saved as "528e7e530cb4a3a170c22974757e8686bb4639d140e049ccc2738c4c44b1a6b5"

/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]
- Fetched 103 kB in 0s (450 kB/s)
- Reading package lists...
- 
2025-03-11 12:05.36 ---> saved as "663f4c13ce4928f82ce9f98598f7b8821a3014336f537263a38048019afdc050"

/home/opam: (run (shell "opam pin add -k version -yn melange-json.2.0.0 2.0.0"))
melange-json is now pinned to version 2.0.0
2025-03-11 12:05.37 ---> saved as "963dac5301fd6f241b6916079eb52dd42627603e9e2ee0a5529d8e8524d0e13f"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall melange-json.2.0.0;\
                        \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 \"$pkg\" != 'melange-json.2.0.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
melange-json.2.0.0 is not installed. Install it? [Y/n] y
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 4.05.0
    - melange-json >= 2.0.0 -> melange >= 4.0.0 -> ocaml >= 4.14 -> ocaml-variants < 5.1.1~
    You can temporarily relax the switch invariant with `--update-invariant'
  * Missing dependency:
    - melange-json >= 2.0.0 -> melange >= 4.0.0 -> ocaml >= 4.14 -> ocaml-variants < 4.14.1~ -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'
  * Missing dependency:
    - melange-json >= 2.0.0 -> melange >= 4.0.0 -> ocaml >= 5.1.1 -> ocaml-variants >= 5.1.1~ -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall melange-json.2.0.0;
        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 "$pkg" != 'melange-json.2.0.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2025-03-11 12:06.00: Job failed: Failed: Build failed
2025-03-11 12:06.00: Log analysis:
2025-03-11 12:06.00: >>> 
No solution found, exiting
 (score = 100)
2025-03-11 12:06.00: [SKIP] Package not available