2026-02-18 16:03.01: New job: build qcow.0.13.0, using opam 2.0
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29420/head (1c56fa007c7c3d55ecb6e813f3453aa0163c8362)
                              on debian-13-ocaml-5.4/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29420/head" && git reset --hard 1c56fa00
git fetch origin master
git merge --no-edit 0431a98cc2177cbcc88e0937fe5b1b48e457e990
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.4@sha256:4add1601135529e9f2e403a25c1c640231c0e871e87f88cf8feab4be5095104c
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-2.0 /usr/bin/opam
RUN opam init --reinit -ni
RUN opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam depext -u || true
RUN opam pin add -k version -yn qcow.0.13.0 0.13.0
RUN opam depext qcow.0.13.0 && opam reinstall qcow.0.13.0; \
    res=$?; \
    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 "$pkg" != 'qcow.0.13.0' && partial_fails="$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 .

2026-02-18 16:03.01: Using cache hint "ocaml/opam:debian-13-ocaml-5.4@sha256:4add1601135529e9f2e403a25c1c640231c0e871e87f88cf8feab4be5095104c-qcow.0.13.0-1c56fa007c7c3d55ecb6e813f3453aa0163c8362"
2026-02-18 16:03.01: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.4@sha256:4add1601135529e9f2e403a25c1c640231c0e871e87f88cf8feab4be5095104c)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/bin/opam-2.0 /usr/bin/opam"))
 (run (network host)
      (shell "opam init --reinit --config .opamrc-sandbox -ni"))
 (run (shell "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 depext -u || true"))
 (run (shell "opam pin add -k version -yn qcow.0.13.0 0.13.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam depext qcow.0.13.0 && opam reinstall qcow.0.13.0;\
             \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 \"$pkg\" != 'qcow.0.13.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-02-18 16:03.01: Waiting for resource in pool OCluster
2026-02-18 16:03.04: Waiting for worker…
2026-02-18 16:06.01: Got resource from pool OCluster
Building on asteria.caelum.ci.dev
All commits already cached
HEAD is now at 0431a98cc2 Merge pull request #29419 from dinosaure/release-hxd-v0.4.0
Merge made by the 'ort' strategy.
 packages/qcow-stream/qcow-stream.0.13.0/opam | 42 +++++++++++++++++++
 packages/qcow-tool/qcow-tool.0.13.0/opam     | 57 +++++++++++++++++++++++++
 packages/qcow-types/qcow-types.0.13.0/opam   | 50 ++++++++++++++++++++++
 packages/qcow/qcow.0.13.0/opam               | 62 ++++++++++++++++++++++++++++
 4 files changed, 211 insertions(+)
 create mode 100644 packages/qcow-stream/qcow-stream.0.13.0/opam
 create mode 100644 packages/qcow-tool/qcow-tool.0.13.0/opam
 create mode 100644 packages/qcow-types/qcow-types.0.13.0/opam
 create mode 100644 packages/qcow/qcow.0.13.0/opam

(from ocaml/opam:debian-13-ocaml-5.4@sha256:4add1601135529e9f2e403a25c1c640231c0e871e87f88cf8feab4be5095104c)
2026-02-18 16:11.36 ---> using "3c18c9e472a4f76bc128dc0a5a1e21158ba3dbd0d6773ace6ec33f0cfe6fac9b" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-2.0 /usr/bin/opam"))
2026-02-18 16:11.36 ---> using "9977b265c0c2169e3d6e1d5fd30288788cef6fa2098b216c383dbe2f2af5d3be" from cache

/home/opam: (run (network host)
                 (shell "opam init --reinit --config .opamrc-sandbox -ni"))
[NOTE] Will configure 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.

[WARNING] Recommended dependencies -- most packages rely on these:
  - m4

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
default (at git+file:///home/opam/opam-repository): 
    [INFO] opam 2.1 and 2.2 include many performance and security improvements over 2.0; please consider upgrading (https://opam.ocaml.org/doc/Install.html)

2026-02-18 16:11.36 ---> using "9db4ce202e63f28fbf637045209431c2712a649b3d599ee21c42ca79a8b8f601" from cache

/home/opam: (run (shell "opam config report"))
# opam config report
# opam-version      2.0.10 (adc1e1829a2bef5b240746df80341b508290fe3b) 
# self-upgrade      no
# system            arch=x86_64 os=linux os-distribution=debian os-version=13
# solver            builtin-mccs+glpk
# install-criteria  -removed,-count[version-lag,request],-count[version-lag,changed],-changed
# upgrade-criteria  -removed,-count[version-lag,solution],-new
# jobs              71
# repositories      1 (version-controlled)
# pinned            1 (version)
# current-switch    5.4
2026-02-18 16:11.36 ---> using "9d723489c4ffa196e512eaebf98a1efe43ed5b2d8d1bbf1c8e8e385abac1d516" 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/"))
2026-02-18 16:11.36 ---> using "faef83b30c7783db3d1569810b91945d51f81e1a6b9da9881987b9c3f598b75f" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-02-18 16:11.37 ---> using "0b227e20264fc6b93f0c09ddd5088ba82cd4813c0975d7387732e773f38e0e96" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
default (at file:///home/opam/opam-repository): 
    [INFO] opam 2.1 and 2.2 include many performance and security improvements over 2.0; please consider upgrading (https://opam.ocaml.org/doc/Install.html)

2026-02-18 16:11.37 ---> using "42345f3b55b8291427adb2fe75f28820b5043433fb26b376238a1ef79e8128d1" from cache

/home/opam: (run (network host)
                 (shell "opam depext -u || true"))
# Detecting depexts using vars: arch=x86_64, os=linux, os-distribution=debian, os-family=debian
# No extra OS packages requirements found.
# All required OS packages found.
The following command needs to be run through "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 [110 kB]
Fetched 200 kB in 0s (1830 kB/s)
Reading package lists...
# OS package update successful
2026-02-18 16:11.37 ---> using "61cbd1b7b4bd2ce470e59b059894d10edb656ee2d60d547438d8509af06e5fd8" from cache

/home/opam: (run (shell "opam pin add -k version -yn qcow.0.13.0 0.13.0"))
qcow is now pinned to version 0.13.0
2026-02-18 16:11.37 ---> using "66c2f61cf8a0cb890e22eec5aa5bdc581123638edaa551c7b4f6902f6729d6cb" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam depext qcow.0.13.0 && opam reinstall qcow.0.13.0;\
                        \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 \"$pkg\" != 'qcow.0.13.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
# Detecting depexts using vars: arch=x86_64, os=linux, os-distribution=debian, os-family=debian
[ERROR] No solution for qcow.0.13.0: The following dependencies couldn't be met:
          - qcow -> unix-type-representations -> ocaml < 5.0.0
              base of this switch (use `--unlock-base' to force)


Command failed: opam list --readonly --external '--resolve=qcow.0.13.0' --color=never returned 20
"/usr/bin/env" "bash" "-c" "opam depext qcow.0.13.0 && opam reinstall qcow.0.13.0;
        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 "$pkg" != 'qcow.0.13.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2026-02-18 16:11.48: Job failed: Failed: Build failed
2026-02-18 16:11.48: Log analysis:
2026-02-18 16:11.48: >>> 
[ERROR] No solution for qcow.0.13.0: The following dependencies couldn't be met:
 (score = 100)
2026-02-18 16:11.48: [SKIP] Package not available