(not at the head of any monitored branch or PR)
2026-01-20 14:13.59: New job: build carton-git-lwt.1.2.0, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29253/head (cf69fbaba3a6096a276cc51adc056715c497ad10)
                              on debian-13-ocaml-4.09/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29253/head" && git reset --hard cf69fbab
git fetch origin master
git merge --no-edit 1c997ec9e6ebc6ea699547000cb8dfa44e52efaa
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.09@sha256:dad58ff31835ec6933b5e094aa2c4bba49eb1402565d0106c6db595ef539a0d7
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn carton-git-lwt.1.2.0 1.2.0
RUN opam reinstall carton-git-lwt.1.2.0; \
    res=$?; \
    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-13\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'carton-git-lwt.1.2.0' && partial_fails="$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 .

2026-01-20 14:13.59: Using cache hint "ocaml/opam:debian-13-ocaml-4.09@sha256:dad58ff31835ec6933b5e094aa2c4bba49eb1402565d0106c6db595ef539a0d7-carton-git-lwt.1.2.0-cf69fbaba3a6096a276cc51adc056715c497ad10"
2026-01-20 14:13.59: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.09@sha256:dad58ff31835ec6933b5e094aa2c4bba49eb1402565d0106c6db595ef539a0d7)
 (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 carton-git-lwt.1.2.0 1.2.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall carton-git-lwt.1.2.0;\
             \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-13\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'carton-git-lwt.1.2.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-01-20 14:13.59: Waiting for resource in pool OCluster
2026-01-20 14:14.01: Waiting for worker…
2026-01-20 14:14.01: Got resource from pool OCluster
Building on laodoke.caelum.ci.dev
All commits already cached
Updating files:  99% (19054/19236)
Updating files: 100% (19236/19236)
Updating files: 100% (19236/19236), done.
HEAD is now at 1c997ec9e6 Merge pull request #29241 from polytypic/release-multicore-magic-2.3.2
Updating 1c997ec9e6..cf69fbaba3
Fast-forward
 packages/carton-git-lwt/carton-git-lwt.1.2.0/opam | 38 ++++++++++++++++++++
 packages/carton-lwt/carton-lwt.1.2.0/opam         | 38 ++++++++++++++++++++
 packages/carton-miou/carton-miou.1.2.0/opam       | 42 +++++++++++++++++++++++
 packages/carton/carton.1.2.0/opam                 | 41 ++++++++++++++++++++++
 4 files changed, 159 insertions(+)
 create mode 100644 packages/carton-git-lwt/carton-git-lwt.1.2.0/opam
 create mode 100644 packages/carton-lwt/carton-lwt.1.2.0/opam
 create mode 100644 packages/carton-miou/carton-miou.1.2.0/opam
 create mode 100644 packages/carton/carton.1.2.0/opam

(from ocaml/opam:debian-13-ocaml-4.09@sha256:dad58ff31835ec6933b5e094aa2c4bba49eb1402565d0106c6db595ef539a0d7)
2026-01-20 14:14.14 ---> using "c32a5c78c36078ec5a7a48d51038f3e3d45c634549e9ab9c7e0955e860972789" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-01-20 14:14.14 ---> using "bed6fbf8b428f4f1ac17f7727fbfef362720bc7feda359f7ec155d9e04d4b4e5" 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
2026-01-20 14:14.14 ---> using "8d7b92f60a53ab184d32b87569a1dd6ac046c3f3cc22e86bac48de8e76be088f" 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
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=debian os-version=13
# 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       4.09
# invariant            ["ocaml-base-compiler" {= "4.09.1"}]
# compiler-packages    ocaml-base-compiler.4.09.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.09/lib/ocaml/stublibs:/home/opam/.opam/4.09/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.09.1
2026-01-20 14:14.14 ---> using "8192b57f0af7db1f16fa91213432a6242954afa1e7761b5c5b35460cccd273e3" 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/"))
2026-01-20 14:14.14 ---> using "dd6ccf71028ff36169deebf55ed846649e0fc4aefb57bdb8f6358fec316b5b78" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-01-20 14:14.27 ---> saved as "a1baa6805e1b2232d7af77f1c138ca76a82d007239f4151a0dea4ca435929250"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-01-20 14:14.45 ---> saved as "b4ee80e4de9f5caf1bf35b02d51984af5c0be4b90b4a51436074e14051b77768"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian trixie InRelease
- Get:2 http://deb.debian.org/debian trixie-updates InRelease [47.3 kB]
- Get:3 http://deb.debian.org/debian-security trixie-security InRelease [43.4 kB]
- Get:4 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [96.1 kB]
- Fetched 187 kB in 0s (1507 kB/s)
- Reading package lists...
- 
2026-01-20 14:14.46 ---> saved as "d5067f67c14be988fdd499ddbf78ac362a3c2965cbd32bf81a0633363be8e027"

/home/opam: (run (shell "opam pin add -k version -yn carton-git-lwt.1.2.0 1.2.0"))
carton-git-lwt is now pinned to version 1.2.0
2026-01-20 14:14.48 ---> saved as "72bfbc98908df79b60e47b31fa94a9ad7729b1794ec6200760ab157df6313fd1"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall carton-git-lwt.1.2.0;\
                        \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-13\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'carton-git-lwt.1.2.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
carton-git-lwt.1.2.0 is not installed. Install it? [Y/n] y
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 4.09.1
    - carton-git-lwt >= 1.2.0 -> cachet-lwt -> ocaml >= 4.14.0 -> ocaml-variants < 4.14.3~
    You can temporarily relax the switch invariant with `--update-invariant'
  * Missing dependency:
    - carton-git-lwt >= 1.2.0 -> cachet-lwt -> ocaml >= 4.14.0 -> ocaml-variants < 4.14.3~ -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'
  * Missing dependency:
    - carton-git-lwt >= 1.2.0 -> cachet-lwt -> ocaml >= 4.14.0 -> ocaml-variants >= 4.14.0~ -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall carton-git-lwt.1.2.0;
        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-13\""; then
            echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.";
          fi;
          test "$pkg" != 'carton-git-lwt.1.2.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2026-01-20 14:15.05: Job failed: Failed: Build failed
2026-01-20 14:15.05: Log analysis:
2026-01-20 14:15.05: >>> 
No solution found, exiting
 (score = 100)
2026-01-20 14:15.05: [SKIP] Package not available