(for PR #29068)

2026-03-19 08:08.42: New job: build matcha.0.1.0, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29068/head (199fe28cd74a5ffe7f2f116239daf07e8ca8c28f)
                              on debian-13-ocaml-4.14-nnpchecker/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29068/head" && git reset --hard 199fe28c
git fetch origin master
git merge --no-edit 9f189ca4f94fbb5f0045820bf3c4ffafb21145ef
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.14-nnpchecker@sha256:4fa6539d7babf8637c12ce8b555fc585b2edd150ea87a16148b48f8aaffd00e9
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn matcha.0.1.0 0.1.0
RUN opam reinstall matcha.0.1.0; \
    res=$?; \
    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 "$pkg" != 'matcha.0.1.0' && partial_fails="$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 .

2026-03-19 08:08.42: Using cache hint "ocaml/opam:debian-13-ocaml-4.14-nnpchecker@sha256:4fa6539d7babf8637c12ce8b555fc585b2edd150ea87a16148b48f8aaffd00e9-matcha.0.1.0-199fe28cd74a5ffe7f2f116239daf07e8ca8c28f"
2026-03-19 08:08.42: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.14-nnpchecker@sha256:4fa6539d7babf8637c12ce8b555fc585b2edd150ea87a16148b48f8aaffd00e9)
 (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 matcha.0.1.0 0.1.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall matcha.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 \"$pkg\" != 'matcha.0.1.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-03-19 08:08.42: Waiting for resource in pool OCluster
2026-03-19 08:08.44: Waiting for worker…
2026-03-19 08:10.28: Got resource from pool OCluster
Building on clete
All commits already cached
HEAD is now at 9f189ca4f9 Merge pull request #29562 from shonfeder/release-dune-3.22.0
Merge made by the 'ort' strategy.
 packages/matcha/matcha.0.1.0/opam | 40 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 packages/matcha/matcha.0.1.0/opam

(from ocaml/opam:debian-13-ocaml-4.14-nnpchecker@sha256:4fa6539d7babf8637c12ce8b555fc585b2edd150ea87a16148b48f8aaffd00e9)
2026-03-19 08:12.27 ---> using "fe1a12c31c3c1eb332e19d90554025bdbe264fe7e0670b3e5e03005c59acc828" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-03-19 08:12.27 ---> using "e828689caa9f4cef38d04ebad417e7fdb68160a37d15f0103b4f970c76962d9a" 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
2026-03-19 08:12.27 ---> using "8ae23286fbfe981398940f6959e8114bf5e6d1b3fec22c43e5e3ca9461612285" 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       4.14
# invariant            ["ocaml-options-only-nnpchecker"]
# compiler-packages    ocaml-option-nnpchecker.1, ocaml-options-only-nnpchecker.1, ocaml-variants.4.14.2+options
# 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+options
2026-03-19 08:12.27 ---> using "bea5f02fd4f6e9f172da7bb85806100e195a367aa134813c750af226dd5902c1" 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/"))
2026-03-19 08:12.27 ---> using "842d10c2cb6719479fbdcf12aaa0fa417895569f3f80c6717d43863b8592754c" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-03-19 08:12.31 ---> saved as "357889ff422dcb9e4dbff39b5ce087f157eb6c68b53d158cf9a30e52657e270c"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-03-19 08:13.01 ---> saved as "2ea3c3c4c7c21eafe8627070f4abc9cb7b4c99572d33766944f483e030ea4ee1"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Get:1 http://deb.debian.org/debian trixie InRelease [140 kB]
- 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 trixie/main amd64 Packages [9671 kB]
- Get:5 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [115 kB]
- Fetched 10.0 MB in 6s (1734 kB/s)
- Reading package lists...
- 
2026-03-19 08:13.09 ---> saved as "8ee04d1a09379c8a5fb927a25f8dbdb3ad27bf00100f5e4146a194f95f42d9b9"

/home/opam: (run (shell "opam pin add -k version -yn matcha.0.1.0 0.1.0"))
matcha is now pinned to version 0.1.0
2026-03-19 08:13.10 ---> saved as "72000ea87efbc3f0c4db0eaaeb6c3d6c3d69685f06fa83c31da06a52abe92314"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall matcha.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 \"$pkg\" != 'matcha.0.1.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
matcha.0.1.0 is not installed. Install it? [Y/n] y
  * Incompatible packages:
    - (invariant) -> ocaml-options-only-nnpchecker -> ocaml-option-nnpchecker
    - matcha -> ocaml >= 5.3.0 -> ocaml-base-compiler >= 5.3.0~ -> ocaml-options-vanilla
    You can temporarily relax the switch invariant with `--update-invariant'
  * Missing dependency:
    - matcha -> ocaml >= 5.3.0 -> dkml-base-compiler >= 5.6.0~ | ocaml-base-compiler >= 5.6.0 | ocaml-system >= 5.6.0~ | ocaml-variants >= 5.6.0~
    no matching version
    no matching version
    no matching version
    not available because the package is pinned to version 4.14.2+options

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall matcha.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 "$pkg" != 'matcha.0.1.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2026-03-19 08:13.29: Job failed: Failed: Build failed
2026-03-19 08:13.29: Log analysis:
2026-03-19 08:13.29: >>> 
No solution found, exiting
 (score = 100)
2026-03-19 08:13.29: [SKIP] Package not available