(for PR #29312)

2026-01-30 20:43.28: New job: build matrix.0.1.0, using opam 2.1
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29312/head (4219a994291bbd7606c64e62833ff523b0ca72c2)
                              on debian-13-ocaml-5.4/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29312/head" && git reset --hard 4219a994
git fetch origin master
git merge --no-edit 0758d335cb8d1367e501844fb86be0b07e4918ac
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.4@sha256:7b75eb963f7d9195aa7a042832bacc96efd4ab4b0279914c2953f9f23ee6d1e6
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn matrix.0.1.0 0.1.0
RUN opam reinstall matrix.0.1.0; \
    res=$?; \
    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

END-OF-DOCKERFILE
docker build -f ../Dockerfile .

2026-01-30 20:43.28: Using cache hint "ocaml/opam:debian-13-ocaml-5.4@sha256:7b75eb963f7d9195aa7a042832bacc96efd4ab4b0279914c2953f9f23ee6d1e6-matrix.0.1.0-4219a994291bbd7606c64e62833ff523b0ca72c2"
2026-01-30 20:43.28: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.4@sha256:7b75eb963f7d9195aa7a042832bacc96efd4ab4b0279914c2953f9f23ee6d1e6)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/bin/opam-2.1 /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"))
)

2026-01-30 20:43.28: Waiting for resource in pool OCluster
2026-01-30 21:00.10: Waiting for worker…
2026-01-30 21:02.47: Got resource from pool OCluster
Building on laodoke.caelum.ci.dev
All commits already cached
HEAD is now at 0758d335cb Merge pull request #29298 from raphael-proust/opam-publish-lwt_ppx.5.9.3
Updating 0758d335cb..4219a99429
Fast-forward
 packages/matrix/matrix.0.1.0/opam | 42 +++++++++++++++++++++++++++++++++++
 packages/mosaic/mosaic.0.1.0/opam | 46 +++++++++++++++++++++++++++++++++++++++
 packages/toffee/toffee.0.1.0/opam | 41 ++++++++++++++++++++++++++++++++++
 3 files changed, 129 insertions(+)
 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

(from ocaml/opam:debian-13-ocaml-5.4@sha256:7b75eb963f7d9195aa7a042832bacc96efd4ab4b0279914c2953f9f23ee6d1e6)
Unable to find image 'ocaml/opam:debian-13-ocaml-5.4@sha256:7b75eb963f7d9195aa7a042832bacc96efd4ab4b0279914c2953f9f23ee6d1e6' locally
docker.io/ocaml/opam@sha256:7b75eb963f7d9195aa7a042832bacc96efd4ab4b0279914c2953f9f23ee6d1e6: Pulling from ocaml/opam
2ca1bfae7ba8: Already exists
3baeae2ed4cf: Already exists
b254ca288623: Already exists
745976a04e35: Already exists
a516242b2337: Already exists
9bb526cd9631: Already exists
3737e8f76884: Already exists
6a8811ebcb2c: Already exists
386dffb80382: Already exists
e04d691eea35: Already exists
bb72c0d1c3f0: Already exists
3a56fcb872cd: Already exists
5abffa2313de: Already exists
7ed80bc2b055: Already exists
87c92835260d: Already exists
5624e0ee5ca5: Already exists
96e54dc9b357: Already exists
96e54dc9b357: Already exists
7c484d393436: Already exists
16b8d7610542: Already exists
c5ac47ffe6ef: Already exists
00cfb259c8ac: Already exists
4f4fb700ef54: Already exists
4658a16b5264: Already exists
7c82a6a00032: Already exists
b76e2612fc73: Already exists
da0741a07551: Already exists
102a21125d73: Already exists
d244b294335f: Already exists
e47a432b94fb: Already exists
6ee7cce1e23d: Already exists
2475e9cbd3e5: Already exists
4f8aac8ae1e5: Already exists
3e59226f7823: Already exists
6d429b9a6ce7: Already exists
dc8bbbd9edf9: Already exists
66ec5629681d: Already exists
74661ee64965: Already exists
b3088c441ac7: Already exists
11be3e645e01: Already exists
e9a0ff031006: Already exists
02e67148461a: Already exists
8486a827c317: Already exists
eddafbbeb04f: Already exists
58f76f7cc43e: Pulling fs layer
c62fa2e2a408: Pulling fs layer
92abc54e89a2: Pulling fs layer
ff21e2f9548b: Pulling fs layer
ff21e2f9548b: Waiting
92abc54e89a2: Verifying Checksum
92abc54e89a2: Download complete
c62fa2e2a408: Verifying Checksum
c62fa2e2a408: Download complete
ff21e2f9548b: Download complete
58f76f7cc43e: Verifying Checksum
58f76f7cc43e: Download complete
58f76f7cc43e: Pull complete
c62fa2e2a408: Pull complete
92abc54e89a2: Pull complete
ff21e2f9548b: Pull complete
Digest: sha256:7b75eb963f7d9195aa7a042832bacc96efd4ab4b0279914c2953f9f23ee6d1e6
Status: Downloaded newer image for ocaml/opam@sha256:7b75eb963f7d9195aa7a042832bacc96efd4ab4b0279914c2953f9f23ee6d1e6
2026-01-30 21:02.50 ---> using "ec0b9239d97b1eba002b8666d90bcda143b1414915128d32a0b6cb8a1bd9f05c" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam"))
2026-01-30 21:02.50 ---> using "9e1bccb83d07867d21549316788fbc07bae5e78de5c50fb295a67385668126fc" 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 development version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.1, 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
2026-01-30 21:02.50 ---> using "7ddd18fabf4851075ca13ac6a0b8465bf826ea31492b7fc91ef994ed88ef6428" 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         2.1.6 (263921263e1f745613e2882745114b7b08f3608b) 
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=debian os-version=13
# solver               builtin-0install
# install-criteria     
# upgrade-criteria     
# jobs                 71
# repositories         1 (version-controlled)
# pinned               1 (version)
# current-switch       5.4
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/5.4/lib/ocaml/stublibs:/home/opam/.opam/5.4/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       5.4.0
2026-01-30 21:02.50 ---> using "be934aa783d0fbc6d8e7b71d802af5bd7c07c9bc85159d692b54eb394123dc0b" 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/"))
2026-01-30 21:02.50 ---> using "1bf52fd6ba77024d25023f7b1186fbd1d5ee854e9bf4f0eaddb034d579d0ccd0" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-01-30 21:03.22 ---> saved as "e0b7a333b89a364be75fa7f0f7feccb4a45a47ce1f3dc098692ede7a53ae04bc"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-01-30 21:03.33 ---> saved as "9ba661157a71616a982a29e8afea03543d12e4a5708eee799b4f1c178c4598a6"

/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 [98.2 kB]
- Fetched 189 kB in 0s (1806 kB/s)
- Reading package lists...
2026-01-30 21:03.35 ---> saved as "904da040369e80ccec044f066fb46598709b3fd9955aa630a3a066c08e9e74bd"

/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
2026-01-30 21:03.36 ---> saved as "417c48088bea4245f935a2c6efb734ffc47220fcbcf477521d22aed1118b2b25"

/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
The following actions will be performed:
  - install dune   3.21.0 [required by matrix]
  - install matrix 0.1.0*
===== 2 to install =====

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved dune.3.21.0  (cached)
-> retrieved matrix.0.1.0  (cached)
-> installed dune.3.21.0
[ERROR] The compilation of matrix.0.1.0 failed at "dune build -p matrix -j 71 @install".

#=== ERROR while compiling matrix.0.1.0 =======================================#
# context              2.1.6 | linux/x86_64 | ocaml-base-compiler.5.4.0 | pinned(https://github.com/tmattio/mosaic/releases/download/0.1.0/mosaic-0.1.0.tbz)
# path                 ~/.opam/5.4/.opam-switch/build/matrix.0.1.0
# command              ~/.opam/opam-init/hooks/sandbox.sh build dune build -p matrix -j 71 @install
# exit-code            1
# env-file             ~/.opam/log/matrix-7-c259f0.env
# output-file          ~/.opam/log/matrix-7-c259f0.out
### output ###
# File "matrix/test/charts/dune", line 7, characters 7-17:
# 7 |   (pps ppx_expect)))
#            ^^^^^^^^^^
# Error: Library "ppx_expect" not found.
# -> required by library "test_charts" in _build/default/matrix/test/charts
# -> required by _build/default/META.matrix
# -> required by _build/install/default/lib/matrix/META
# -> required by _build/default/matrix.install
# -> required by alias install



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - build matrix 0.1.0
+- 
+- The following changes have been performed
| - install dune 3.21.0
+- 
# Run eval $(opam env) to update the current shell environment

The former state can be restored with:
    /usr/bin/opam switch import "/home/opam/.opam/5.4/.opam-switch/backup/state-20260130210336.export"
[WARNING] OPAMCONFIRMLEVEL was ignored because CLI 2.0 was requested and it was introduced in 2.1.
[WARNING] OPAMCONFIRMLEVEL was ignored because CLI 2.0 was requested and it was introduced in 2.1.
"/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 1
2026-01-30 21:04.28: Job failed: Failed: Build failed
2026-01-30 21:04.28: Log analysis:
2026-01-30 21:04.28: >>> 
[ERROR] The compilation of matrix.0.1.0 failed at "dune build -p matrix -j 71 @install".
 (score = 20)
2026-01-30 21:04.28: >>> 
# Error: Library "ppx_expect" not found.
 (score = 48)
2026-01-30 21:04.28: Library "ppx_expect" not found.