(for PR #29068)

2025-12-11 20:14.34: New job: build matcha.0.1.0, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29068/head (52abec3711367f750fe08ceba6ce2348a17e222e)
                              on ubuntu-24.04-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29068/head" && git reset --hard 52abec37
git fetch origin master
git merge --no-edit 810e1f14b7fa6411c66a3549f4c2aff47c52fc36
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:ubuntu-24.04-ocaml-4.14@sha256:7f4e554329cb81b841e3ed28f284471d289ea718dffa40e3f597fd8b0b434350
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn matcha.0.1.0 0.1.0
RUN opam reinstall matcha.0.1.0; \
    res=$?; \
    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 "\"ubuntu-24.04\""; 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 .

2025-12-11 20:14.34: Using cache hint "ocaml/opam:ubuntu-24.04-ocaml-4.14@sha256:7f4e554329cb81b841e3ed28f284471d289ea718dffa40e3f597fd8b0b434350-matcha.0.1.0-52abec3711367f750fe08ceba6ce2348a17e222e"
2025-12-11 20:14.34: Using OBuilder spec:
((from ocaml/opam:ubuntu-24.04-ocaml-4.14@sha256:7f4e554329cb81b841e3ed28f284471d289ea718dffa40e3f597fd8b0b434350)
 (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 \"\\\"ubuntu-24.04\\\"\"; 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"))
)

2025-12-11 20:14.34: Waiting for resource in pool OCluster
2025-12-11 20:22.15: Waiting for worker…
2025-12-11 20:24.38: Got resource from pool OCluster
Building on clete
All commits already cached
Updating files:  96% (18354/19001)
Updating files:  97% (18431/19001)
Updating files:  98% (18621/19001)
Updating files:  99% (18811/19001)
Updating files: 100% (19001/19001)
Updating files: 100% (19001/19001), done.
HEAD is now at 810e1f14b7 Merge pull request #29066 from gares/release-elpi-v3.4.4
Updating 810e1f14b7..52abec3711
Fast-forward
 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:ubuntu-24.04-ocaml-4.14@sha256:7f4e554329cb81b841e3ed28f284471d289ea718dffa40e3f597fd8b0b434350)
2025-12-11 20:24.51 ---> using "049424e9ea37f1cd6b287c4aec2452cf257bc79b2f9fe2fd58e82150e47f9c37" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2025-12-11 20:24.51 ---> using "fc641a001b89148027114be0bf92b76e96b3519dceaab55e635bbf6b9b72f8a6" 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
2025-12-11 20:24.51 ---> using "47c37667ec200f5f2bbf03affe5a68e5417a70a1c13e907bf2bb798d92fe6cf8" 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=ubuntu os-version=24.04
# 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
2025-12-11 20:24.51 ---> using "f9079b306e3286deb1bc7821d77ebf8529778f7c5d2041430fe5f63bbea88c08" 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/"))
2025-12-11 20:24.51 ---> using "ea66749ae6a535f9b102b9501af48c10be0cbdff8644b0da1a5bfb5df0eeeeb0" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-12-11 20:25.01 ---> saved as "25cb15396f30e29783dbacf43f169330c6ed385998f2717144e1bcc95fed2cf0"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-12-11 20:25.23 ---> saved as "a2928b6cd6dc94851276e82ed04320bfc3508ceff72737e639f418bb4672fb4f"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Get:1 http://security.ubuntu.com/ubuntu noble-security InRelease [126 kB]
- Hit:2 http://archive.ubuntu.com/ubuntu noble InRelease
- Get:3 http://archive.ubuntu.com/ubuntu noble-updates InRelease [126 kB]
- Get:4 http://archive.ubuntu.com/ubuntu noble-backports InRelease [126 kB]
- Get:5 http://security.ubuntu.com/ubuntu noble-security/universe amd64 Packages [1183 kB]
- Get:6 http://archive.ubuntu.com/ubuntu noble-updates/universe amd64 Packages [1944 kB]
- Get:7 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages [1736 kB]
- Get:8 http://security.ubuntu.com/ubuntu noble-security/restricted amd64 Packages [2874 kB]
- Get:9 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages [2118 kB]
- Get:10 http://archive.ubuntu.com/ubuntu noble-updates/restricted amd64 Packages [3048 kB]
- Fetched 13.3 MB in 1s (9943 kB/s)
- Reading package lists...
- 
2025-12-11 20:25.27 ---> saved as "7632d6d23204f6067910e6b3199ce598abf74609c465271ecce86e9e1ba033c0"

/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
2025-12-11 20:25.29 ---> saved as "39fd383452f258aef62f4f61bb228b92c3f7f70ac7507ce56d8c5ce2024da7eb"

/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 \"\\\"ubuntu-24.04\\\"\"; 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-base-compiler = 4.14.2
    - matcha -> ocaml >= 5.3.0 -> ocaml-variants >= 5.3.0~
    You can temporarily relax the switch invariant with `--update-invariant'

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 "\"ubuntu-24.04\""; 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
2025-12-11 20:25.50: Job failed: Failed: Build failed
2025-12-11 20:25.50: Log analysis:
2025-12-11 20:25.50: >>> 
No solution found, exiting
 (score = 100)
2025-12-11 20:25.50: [SKIP] Package not available