Build:
  1. 0
2026-02-26 17:31.26: New job: build matrix.0.1.0, lower-bounds, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29312/head (8c083980be49cd4fc405e80bab0aa50d6cebdaac)
                              on debian-13-ocaml-5.0/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29312/head" && git reset --hard 8c083980
git fetch origin master
git merge --no-edit 5119fbb0776fa3cd71b09f40a51e40f783c539bf
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.0@sha256:3c22515e08caf050cd44d8c9405fa3551793de10413ae888c282ac0a941f61c1
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn matrix.0.1.0 0.1.0
RUN opam reinstall matrix.0.1.0; \
    res=$?; \
    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 "$pkg" != 'matrix.0.1.0' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
ENV OPAMCRITERIA="+removed,+count[version-lag,solution]"
ENV OPAMFIXUPCRITERIA="+removed,+count[version-lag,solution]"
ENV OPAMUPGRADECRITERIA="+removed,+count[version-lag,solution]"
RUN opam reinstall matrix.0.1.0; \
    res=$?; \
    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 "$pkg" != 'matrix.0.1.0' && partial_fails="$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 .

2026-02-26 17:31.26: Using cache hint "ocaml/opam:debian-13-ocaml-5.0@sha256:3c22515e08caf050cd44d8c9405fa3551793de10413ae888c282ac0a941f61c1-matrix.0.1.0-8c083980be49cd4fc405e80bab0aa50d6cebdaac"
2026-02-26 17:31.26: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.0@sha256:3c22515e08caf050cd44d8c9405fa3551793de10413ae888c282ac0a941f61c1)
 (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 matrix.0.1.0 0.1.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall matrix.0.1.0;\
             \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 \"$pkg\" != 'matrix.0.1.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (env OPAMCRITERIA +removed,+count[version-lag,solution])
 (env OPAMFIXUPCRITERIA +removed,+count[version-lag,solution])
 (env OPAMUPGRADECRITERIA +removed,+count[version-lag,solution])
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall matrix.0.1.0;\
             \n        res=$?;\
             \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 \"$pkg\" != 'matrix.0.1.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-02-26 17:31.26: Waiting for resource in pool OCluster
2026-02-27 02:07.59: Waiting for worker…
2026-02-27 02:11.03: Got resource from pool OCluster
Building on clete
All commits already cached
Updating files:  91% (16797/18332)
Updating files:  92% (16866/18332)
Updating files:  93% (17049/18332)
Updating files:  94% (17233/18332)
Updating files:  95% (17416/18332)
Updating files:  96% (17599/18332)
Updating files:  97% (17783/18332)
Updating files:  98% (17966/18332)
Updating files:  99% (18149/18332)
Updating files: 100% (18332/18332)
Updating files: 100% (18332/18332), done.
HEAD is now at 5119fbb077 Merge pull request #29462 from Octachron/OCaml_5.5.0_alpha1
Updating 5119fbb077..8c083980be
Fast-forward
 packages/matrix-eio/matrix-eio.0.1.0/opam   | 42 ++++++++++++++++++++++++++
 packages/matrix/matrix.0.1.0/opam           | 42 ++++++++++++++++++++++++++
 packages/mosaic/mosaic.0.1.0/opam           | 46 +++++++++++++++++++++++++++++
 packages/toffee/toffee.0.1.0/opam           | 42 ++++++++++++++++++++++++++
 packages/tree-sitter/tree-sitter.0.1.0/opam | 41 +++++++++++++++++++++++++
 5 files changed, 213 insertions(+)
 create mode 100644 packages/matrix-eio/matrix-eio.0.1.0/opam
 create mode 100644 packages/matrix/matrix.0.1.0/opam
 create mode 100644 packages/mosaic/mosaic.0.1.0/opam
 create mode 100644 packages/toffee/toffee.0.1.0/opam
 create mode 100644 packages/tree-sitter/tree-sitter.0.1.0/opam

(from ocaml/opam:debian-13-ocaml-5.0@sha256:3c22515e08caf050cd44d8c9405fa3551793de10413ae888c282ac0a941f61c1)
2026-02-27 02:11.22 ---> saved as "1068c3ccbe52c746e0e2e979650a1a1c45261e5cd6ee1c447b634d8591d592e3"

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-02-27 02:11.23 ---> saved as "7b9ed1c53a642e529f65463536ba3b367829020865a571d0727931653c4c3b8d"

/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.

Continue? [Y/n] y
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.

Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2026-02-27 02:11.55 ---> saved as "830d758a4ec91be24d70a3b4b308270e81e1d0735b0c62014c773c1e632aafbe"

/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       5.0
# invariant            ["ocaml-base-compiler" {= "5.0.0"}]
# compiler-packages    ocaml-base-compiler.5.0.0, ocaml-options-vanilla.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/5.0/lib/ocaml/stublibs:/home/opam/.opam/5.0/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       5.0.0
2026-02-27 02:11.56 ---> saved as "c7ec12e17832b928326782860d01d92d91e6af3ad64e7678390a803771a343aa"

/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/"))
2026-02-27 02:12.06 ---> saved as "55df3993d51112096059e105d077522687013d265cf324bc00baa6cad608ac2a"

/home/opam: (copy (src .) (dst opam-repository/))
2026-02-27 02:12.17 ---> saved as "2bd0cda2f3e1f0023dafce8dd7f57db88c7a9750d56df45d8ed1f59ce17ea6c5"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-02-27 02:12.41 ---> saved as "bd9603619e11bced319fb90a57b38ad4554f14202ec8225497a524de9b365676"

/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 [113 kB]
- Fetched 203 kB in 0s (1839 kB/s)
- Reading package lists...
2026-02-27 02:12.42 ---> saved as "0e66934da1a15ff3906c45dcdc00a86c9fcfb027e3939959ea8cc259cdeb0e88"

/home/opam: (run (shell "opam pin add -k version -yn matrix.0.1.0 0.1.0"))
matrix is now pinned to version 0.1.0
2026-02-27 02:12.43 ---> saved as "061874b2eb9366e7ae90aa7f8126b6f16349d7fd93483e9ae8e7acbff0813386"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall matrix.0.1.0;\
                        \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 \"$pkg\" != 'matrix.0.1.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
matrix.0.1.0 is not installed. Install it? [Y/n] y
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 5.0.0
    - matrix -> ocaml >= 5.4 -> ocaml-variants < 5.4.1~
    You can temporarily relax the switch invariant with `--update-invariant'
  * Missing dependency:
    - matrix -> ocaml >= 5.4 -> ocaml-variants < 5.4.1~ -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'
  * Missing dependency:
    - matrix -> ocaml >= 5.4 -> ocaml-variants < 5.4.1~ -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall matrix.0.1.0;
        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 "$pkg" != 'matrix.0.1.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2026-02-27 02:12.57: Job failed: Failed: Build failed
2026-02-27 02:12.57: Log analysis:
2026-02-27 02:12.57: >>> 
No solution found, exiting
 (score = 100)
2026-02-27 02:12.57: [SKIP] Package not available