(not at the head of any monitored branch or PR)
2025-11-30 20:45.57: New job: build melange.6.0.1-51, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29001/head (f552a18f416e36738eee28c6bf79045fd1a926dd)
                              on centos-10-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29001/head" && git reset --hard f552a18f
git fetch origin master
git merge --no-edit 1808b67a60cee484a3c5ff1a64046c0e5f0406a5
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:centos-10-ocaml-4.14@sha256:3eebc8dfc3e218ba14c6f353e7a49d900b66d1314a0f17bf5846a0350c77074d
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn melange.6.0.1-51 6.0.1-51
RUN opam reinstall melange.6.0.1-51; \
    res=$?; \
    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-10\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'melange.6.0.1-51' && partial_fails="$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 .

2025-11-30 20:45.57: Using cache hint "ocaml/opam:centos-10-ocaml-4.14@sha256:3eebc8dfc3e218ba14c6f353e7a49d900b66d1314a0f17bf5846a0350c77074d-melange.6.0.1-51-f552a18f416e36738eee28c6bf79045fd1a926dd"
2025-11-30 20:45.57: Using OBuilder spec:
((from ocaml/opam:centos-10-ocaml-4.14@sha256:3eebc8dfc3e218ba14c6f353e7a49d900b66d1314a0f17bf5846a0350c77074d)
 (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.6.0.1-51 6.0.1-51"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall melange.6.0.1-51;\
             \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-10\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'melange.6.0.1-51' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-11-30 20:45.57: Waiting for resource in pool OCluster
2025-11-30 20:47.08: Waiting for worker…
2025-11-30 20:49.35: Got resource from pool OCluster
Building on toxis.caelum.ci.dev
All commits already cached
HEAD is now at 1808b67a60 Merge pull request #28997 from dinosaure/release-hxd-v0.3.6
Updating 1808b67a60..f552a18f41
Fast-forward
 packages/melange/melange.6.0.1-414/opam | 42 +++++++++++++++++++++++++++++++++
 packages/melange/melange.6.0.1-51/opam  | 42 +++++++++++++++++++++++++++++++++
 packages/melange/melange.6.0.1-52/opam  | 42 +++++++++++++++++++++++++++++++++
 packages/melange/melange.6.0.1-53/opam  | 42 +++++++++++++++++++++++++++++++++
 packages/melange/melange.6.0.1-54/opam  | 42 +++++++++++++++++++++++++++++++++
 5 files changed, 210 insertions(+)
 create mode 100644 packages/melange/melange.6.0.1-414/opam
 create mode 100644 packages/melange/melange.6.0.1-51/opam
 create mode 100644 packages/melange/melange.6.0.1-52/opam
 create mode 100644 packages/melange/melange.6.0.1-53/opam
 create mode 100644 packages/melange/melange.6.0.1-54/opam

(from ocaml/opam:centos-10-ocaml-4.14@sha256:3eebc8dfc3e218ba14c6f353e7a49d900b66d1314a0f17bf5846a0350c77074d)
Unable to find image 'ocaml/opam:centos-10-ocaml-4.14@sha256:3eebc8dfc3e218ba14c6f353e7a49d900b66d1314a0f17bf5846a0350c77074d' locally
docker.io/ocaml/opam@sha256:3eebc8dfc3e218ba14c6f353e7a49d900b66d1314a0f17bf5846a0350c77074d: Pulling from ocaml/opam
61e6c58f46ba: Pulling fs layer
fdb17e40dc7f: Pulling fs layer
6aecce137977: Pulling fs layer
48da7d2fad1d: Pulling fs layer
ddf8d44b592d: Pulling fs layer
3649efa86e97: Pulling fs layer
61e6c58f46ba: Waiting
fb8ee0815d91: Pulling fs layer
48da7d2fad1d: Waiting
6aecce137977: Waiting
ddf8d44b592d: Waiting
61c17cce626d: Pulling fs layer
fdb17e40dc7f: Waiting
3649efa86e97: Waiting
5a2f6c06767b: Pulling fs layer
fb8ee0815d91: Waiting
f07f6a1405e3: Pulling fs layer
0e165a6b681c: Pulling fs layer
e0ebbd84b75a: Pulling fs layer
fac1be562984: Pulling fs layer
0e165a6b681c: Waiting
5e5886d80c00: Pulling fs layer
5a2f6c06767b: Waiting
fac1be562984: Waiting
28fae5d36391: Pulling fs layer
f07f6a1405e3: Waiting
e0ebbd84b75a: Waiting
86e8ee651cf1: Pulling fs layer
7cb6ef8699b7: Pulling fs layer
c9a1215571ab: Pulling fs layer
7cb6ef8699b7: Waiting
2d9802e3e34c: Pulling fs layer
c9a1215571ab: Waiting
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16940db3e301: Waiting
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d1ae73fabed9: Pulling fs layer
e021611a37e5: Waiting
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903b6fe44216: Waiting
d526d4c24f1b: Pulling fs layer
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b45444b85943: Pulling fs layer
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02dbf6bd5d53: Waiting
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5cf3e9942bed: Waiting
f6c1e48f08c3: Waiting
5bcfc5327835: Waiting
61e6c58f46ba: Verifying Checksum
61e6c58f46ba: Download complete
fdb17e40dc7f: Download complete
6aecce137977: Verifying Checksum
6aecce137977: Download complete
ddf8d44b592d: Verifying Checksum
ddf8d44b592d: Download complete
3649efa86e97: Verifying Checksum
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fb8ee0815d91: Verifying Checksum
fb8ee0815d91: Download complete
61c17cce626d: Verifying Checksum
61c17cce626d: Download complete
5a2f6c06767b: Verifying Checksum
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fac1be562984: Download complete
5e5886d80c00: Verifying Checksum
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61e6c58f46ba: Pull complete
fdb17e40dc7f: Pull complete
28fae5d36391: Download complete
6aecce137977: Pull complete
48da7d2fad1d: Verifying Checksum
48da7d2fad1d: Download complete
86e8ee651cf1: Download complete
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c9a1215571ab: Verifying Checksum
c9a1215571ab: Download complete
e4ed9f92655b: Verifying Checksum
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bc2890381fe1: Verifying Checksum
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Digest: sha256:3eebc8dfc3e218ba14c6f353e7a49d900b66d1314a0f17bf5846a0350c77074d
Status: Downloaded newer image for ocaml/opam@sha256:3eebc8dfc3e218ba14c6f353e7a49d900b66d1314a0f17bf5846a0350c77074d
2025-11-30 20:49.40 ---> using "80cb062c5a2da5a1d9f08832c63ca010e45087c2596f4f4bc50c585b5496e650" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2025-11-30 20:49.40 ---> using "74ea4691ac3dffd8e299c4e03ee251af0809fb5ddb91fc7eeada90835856cb6b" 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
2025-11-30 20:49.40 ---> using "bf059edb7766b7739a629c794dbe64880c7d9878345e12565baae3b3abf24684" 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~rc1
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=centos os-version=10
# 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
2025-11-30 20:49.40 ---> using "cefcfd69f34fc6208123e8dfc0826c42f74c516c55cff22698d3d5c9c8dd4810" 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/"))
2025-11-30 20:49.40 ---> using "f64d33a5b5595a1ebd26082e8c4574725543ab85be6a304aac3a70a988c697ee" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-11-30 20:49.51 ---> saved as "cf061da81d44a6f07cf3c6439d694f7d2f61b7901a28768a104909942daaccd9"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-11-30 20:50.12 ---> saved as "1054ad0fdea352e76a45da75a8f0b4c28299cbe905655b92f3e03609443af506"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "yum" "makecache"
- CentOS Stream 10 - BaseOS                       117 kB/s |  15 kB     00:00    
- CentOS Stream 10 - BaseOS                        10 MB/s | 6.8 MB     00:00    
- CentOS Stream 10 - AppStream                    115 kB/s |  15 kB     00:00    
- CentOS Stream 10 - AppStream                    6.8 MB/s | 3.4 MB     00:00    
- CentOS Stream 10 - CRB                          118 kB/s |  15 kB     00:00    
- CentOS Stream 10 - CRB                          2.8 MB/s | 765 kB     00:00    
- CentOS Stream 10 - Extras packages              130 kB/s |  17 kB     00:00    
- Metadata cache created.
2025-11-30 20:50.18 ---> saved as "29b5d26f5d9e79a262451f9d3c6d5394fa9d539dffca4321efff07f1485a7eb1"

/home/opam: (run (shell "opam pin add -k version -yn melange.6.0.1-51 6.0.1-51"))
melange is now pinned to version 6.0.1-51
2025-11-30 20:50.18 ---> saved as "4b4a33d3c186864c5925cc19e597c76df93168ad07fc14419ea6130b3fc9d75a"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall melange.6.0.1-51;\
                        \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-10\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'melange.6.0.1-51' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
melange.6.0.1-51 is not installed. Install it? [Y/n] y
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 4.14.2
    - melange = 6.0.1-51 -> ocaml >= 5.1 -> ocaml-variants < 5.5.1~
    You can temporarily relax the switch invariant with `--update-invariant'
  * Missing dependency:
    - melange = 6.0.1-51 -> ocaml >= 5.1 -> ocaml-variants < 5.1.1~ -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'
  * Missing dependency:
    - melange = 6.0.1-51 -> ocaml >= 5.1 -> ocaml-variants < 5.2.1~ -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall melange.6.0.1-51;
        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-10\""; then
            echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.";
          fi;
          test "$pkg" != 'melange.6.0.1-51' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2025-11-30 20:50.46: Job failed: Failed: Build failed
2025-11-30 20:50.46: Log analysis:
2025-11-30 20:50.46: >>> 
No solution found, exiting
 (score = 100)
2025-11-30 20:50.46: [SKIP] Package not available