(for PR #29581)

2026-03-21 23:40.10: New job: build spectrum.1.0.0.alpha2, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29581/head (c52e39f11b5df3e4bb74becd6c0b64f6f336b223)
                              on debian-13-ocaml-4.13/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29581/head" && git reset --hard c52e39f1
git fetch origin master
git merge --no-edit 76bf2ed9443fdee37e6f046c6295d358be3f8598
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.13@sha256:d8e3b8b0849171c0332a08c9b6e0c29a16d9e6e6e62b2cd69f89fc3c33d9439b
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn spectrum.1.0.0.alpha2 1.0.0.alpha2
RUN opam reinstall spectrum.1.0.0.alpha2; \
    res=$?; \
    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 "$pkg" != 'spectrum.1.0.0.alpha2' && partial_fails="$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 .

2026-03-21 23:40.10: Using cache hint "ocaml/opam:debian-13-ocaml-4.13@sha256:d8e3b8b0849171c0332a08c9b6e0c29a16d9e6e6e62b2cd69f89fc3c33d9439b-spectrum.1.0.0.alpha2-c52e39f11b5df3e4bb74becd6c0b64f6f336b223"
2026-03-21 23:40.10: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.13@sha256:d8e3b8b0849171c0332a08c9b6e0c29a16d9e6e6e62b2cd69f89fc3c33d9439b)
 (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 spectrum.1.0.0.alpha2 1.0.0.alpha2"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall spectrum.1.0.0.alpha2;\
             \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 \"$pkg\" != 'spectrum.1.0.0.alpha2' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-03-21 23:40.10: Waiting for resource in pool OCluster
2026-03-21 23:40.14: Waiting for worker…
2026-03-21 23:40.59: Got resource from pool OCluster
Building on toxis.caelum.ci.dev
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HEAD is now at 76bf2ed944 Merge pull request #29572 from hannesm/release-letsencrypt-v2.0.0
Updating 76bf2ed944..c52e39f11b
Fast-forward
Auto packing the repository in the background for optimum performance.
See "git help gc" for manual housekeeping.
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

 packages/spectrum/spectrum.1.0.0.alpha2/opam       | 52 ++++++++++++++++++++++
 .../spectrum_capabilities.1.0.0.alpha2/opam        | 43 ++++++++++++++++++
 .../spectrum_palette_ppx.1.0.0.alpha2/opam         | 45 +++++++++++++++++++
 .../spectrum_palettes.1.0.0.alpha2/opam            | 42 +++++++++++++++++
 .../spectrum_tools.1.0.0.alpha2/opam               | 47 +++++++++++++++++++
 5 files changed, 229 insertions(+)
 create mode 100644 packages/spectrum/spectrum.1.0.0.alpha2/opam
 create mode 100644 packages/spectrum_capabilities/spectrum_capabilities.1.0.0.alpha2/opam
 create mode 100644 packages/spectrum_palette_ppx/spectrum_palette_ppx.1.0.0.alpha2/opam
 create mode 100644 packages/spectrum_palettes/spectrum_palettes.1.0.0.alpha2/opam
 create mode 100644 packages/spectrum_tools/spectrum_tools.1.0.0.alpha2/opam

(from ocaml/opam:debian-13-ocaml-4.13@sha256:d8e3b8b0849171c0332a08c9b6e0c29a16d9e6e6e62b2cd69f89fc3c33d9439b)
2026-03-21 23:41.55 ---> saved as "46163b6cfcf170c850d3ba02ec5e8d7eb76bdebcc8b9a1c3d181893b5729379c"

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-03-21 23:41.56 ---> saved as "b2f3e91a047d83e37ff09dab47606e22481b3bd9227c7a85c951176ee647ccc8"

/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
2026-03-21 23:42.39 ---> saved as "ecaf698c4a59a0567268ded803c7d02bec9ad64abad4fe26816fa1aa20dd1c08"

/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       4.13
# invariant            ["ocaml-base-compiler" {= "4.13.1"}]
# compiler-packages    ocaml-base-compiler.4.13.1, ocaml-options-vanilla.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.13/lib/ocaml/stublibs:/home/opam/.opam/4.13/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.13.1
2026-03-21 23:42.40 ---> saved as "bf8d7fdb6b804a8215674460874aac9f0aa8198f5529c933351afa74fc3ea1e0"

/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/"))
2026-03-21 23:42.51 ---> saved as "701fb508860f55c096d562769b896b5a1fec89903ff0a7c701e8c893383ddc3f"

/home/opam: (copy (src .) (dst opam-repository/))
2026-03-21 23:43.36 ---> saved as "565883401eda139c597703cfc05d76e3daeba9d9123bc667811dfa8b8b38cbe4"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-03-21 23:44.01 ---> saved as "5210894e6bab2e5be8e175cbfef6149fd91d730fc01a8d3c67fb19d20363a9e5"

/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 [114 kB]
- Fetched 10.0 MB in 2s (5183 kB/s)
- Reading package lists...
- 
2026-03-21 23:44.04 ---> saved as "a96b2b06d68cbd934974254c99839db037c65bfece8f98d3f3a3eda5268d4ed5"

/home/opam: (run (shell "opam pin add -k version -yn spectrum.1.0.0.alpha2 1.0.0.alpha2"))
spectrum is now pinned to version 1.0.0.alpha2
2026-03-21 23:44.05 ---> saved as "ef4f1018778a30b3118053197391d6e04c0a50e69b66fd43b433098a0d8fec6f"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall spectrum.1.0.0.alpha2;\
                        \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 \"$pkg\" != 'spectrum.1.0.0.alpha2' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
spectrum.1.0.0.alpha2 is not installed. Install it? [Y/n] y
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 4.13.1
    - spectrum >= 1.0.0.alpha2 -> ocaml >= 4.14 -> ocaml-variants < 5.4.1~
    You can temporarily relax the switch invariant with `--update-invariant'
  * Missing dependency:
    - spectrum >= 1.0.0.alpha2 -> ocaml >= 4.14 -> ocaml-variants < 4.14.1~ -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'
  * Missing dependency:
    - spectrum >= 1.0.0.alpha2 -> ocaml >= 4.14 -> ocaml-variants < 5.2.1~ -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall spectrum.1.0.0.alpha2;
        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 "$pkg" != 'spectrum.1.0.0.alpha2' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2026-03-21 23:44.30: Job failed: Failed: Build failed
2026-03-21 23:44.30: Log analysis:
2026-03-21 23:44.30: >>> 
No solution found, exiting
 (score = 100)
2026-03-21 23:44.30: [SKIP] Package not available