(not at the head of any monitored branch or PR)
2025-12-09 21:30.51: New job: build flint.0.4.2, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/28935/head (52729bb8d87544615b6b51da763607debc3b5c6c)
                              on debian-13-ocaml-4.09/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/28935/head" && git reset --hard 52729bb8
git fetch origin master
git merge --no-edit d684c896eb6f7e6030d6ee65338d9db22a612f01
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.09@sha256:126017bc740580780422b2e6cc4ac111e639b67ddfb4f0f1bacac410f5692567
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn flint.0.4.2 0.4.2
RUN opam reinstall flint.0.4.2; \
    res=$?; \
    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 "$pkg" != 'flint.0.4.2' && partial_fails="$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 .

2025-12-09 21:30.51: Using cache hint "ocaml/opam:debian-13-ocaml-4.09@sha256:126017bc740580780422b2e6cc4ac111e639b67ddfb4f0f1bacac410f5692567-flint.0.4.2-52729bb8d87544615b6b51da763607debc3b5c6c"
2025-12-09 21:30.51: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.09@sha256:126017bc740580780422b2e6cc4ac111e639b67ddfb4f0f1bacac410f5692567)
 (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 flint.0.4.2 0.4.2"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall flint.0.4.2;\
             \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 \"$pkg\" != 'flint.0.4.2' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-12-09 21:30.51: Waiting for resource in pool OCluster
2025-12-09 23:28.42: Waiting for worker…
2025-12-09 23:31.55: Got resource from pool OCluster
Building on toxis.caelum.ci.dev
All commits already cached
Updating files:  96% (18379/18999)
Updating files:  97% (18430/18999)
Updating files:  98% (18620/18999)
Updating files:  99% (18810/18999)
Updating files: 100% (18999/18999)
Updating files: 100% (18999/18999), done.
HEAD is now at d684c896eb Merge pull request #29052 from balat/maintenance
Merge made by the 'ort' strategy.
 packages/conf-flint/conf-flint.3.0/opam | 15 ++++++++---
 packages/flint/flint.0.4.2/opam         | 48 +++++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+), 4 deletions(-)
 create mode 100644 packages/flint/flint.0.4.2/opam

(from ocaml/opam:debian-13-ocaml-4.09@sha256:126017bc740580780422b2e6cc4ac111e639b67ddfb4f0f1bacac410f5692567)
Unable to find image 'ocaml/opam:debian-13-ocaml-4.09@sha256:126017bc740580780422b2e6cc4ac111e639b67ddfb4f0f1bacac410f5692567' locally
docker.io/ocaml/opam@sha256:126017bc740580780422b2e6cc4ac111e639b67ddfb4f0f1bacac410f5692567: Pulling from ocaml/opam
53c88f1dfeb7: Already exists
268d44a12236: Already exists
f2f36c7402e3: Already exists
9eb2778f421b: Already exists
3ca35f1ec5ed: Already exists
b08866568793: Already exists
fb0d17ce08c9: Already exists
c8db2c4fd670: Already exists
5fa8cfe8f9cb: Already exists
e7f5f7180a56: Already exists
9f66154be4d4: Already exists
f6674de6e5d4: Already exists
80eb63632584: Already exists
66f55aa69346: Already exists
d121bc397a1a: Already exists
0eff100405dd: Already exists
7d67d217736c: Already exists
ac7107dc3d00: Already exists
f01a17be3cef: Already exists
30a38827b55c: Already exists
085733096c8e: Already exists
86db5d63aa02: Already exists
4f4fb700ef54: Already exists
034a62edceac: Already exists
808c1ae36c95: Already exists
eba808bca592: Already exists
68b2bb6a330b: Already exists
9fee74853ab2: Already exists
00d667d2b4f9: Already exists
cde2288b7be2: Already exists
6e6039e741bd: Already exists
08dc627d7129: Already exists
fbbf04bee28a: Already exists
cf124fccb693: Already exists
16001ee30892: Already exists
a379ebcf721f: Already exists
c05951b4b1dd: Already exists
1238fc26ec9b: Already exists
33d5b2862e74: Already exists
6a5c5f5e740e: Already exists
f97083767ae6: Already exists
2a41cd0ca43c: Pulling fs layer
4af6431cd7c8: Pulling fs layer
085e569341ee: Pulling fs layer
0c8cd7b97e97: Pulling fs layer
2a41cd0ca43c: Waiting
4af6431cd7c8: Waiting
0c8cd7b97e97: Waiting
085e569341ee: Waiting
2a41cd0ca43c: Verifying Checksum
2a41cd0ca43c: Download complete
4af6431cd7c8: Verifying Checksum
4af6431cd7c8: Download complete
085e569341ee: Verifying Checksum
085e569341ee: Download complete
0c8cd7b97e97: Download complete
2a41cd0ca43c: Pull complete
4af6431cd7c8: Pull complete
085e569341ee: Pull complete
0c8cd7b97e97: Pull complete
Digest: sha256:126017bc740580780422b2e6cc4ac111e639b67ddfb4f0f1bacac410f5692567
Status: Downloaded newer image for ocaml/opam@sha256:126017bc740580780422b2e6cc4ac111e639b67ddfb4f0f1bacac410f5692567
2025-12-09 23:34.31 ---> saved as "9408afbc8b1b5bd10bfcda92f2e066262a72a2fad41a4c20b3913caa4db5465f"

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2025-12-09 23:34.31 ---> saved as "f2ebb0eb3d329e95b2f39209a737f08740719a56e669a8d787210069a4cb352c"

/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.

Continue? [Y/n] y
Format upgrade done.
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.


<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2025-12-09 23:35.16 ---> saved as "ea9123a0d42bac6315a6b3227e41933d43db04a64855b2337478f9820d3a1303"

/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       4.09
# invariant            ["ocaml-base-compiler" {= "4.09.1"}]
# compiler-packages    ocaml-base-compiler.4.09.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.09/lib/ocaml/stublibs:/home/opam/.opam/4.09/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.09.1
2025-12-09 23:35.19 ---> saved as "e5cb90e8dcf9a44376acece517c39dfae228a6860a086dfb135d12589a8a1749"

/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/"))
2025-12-09 23:35.33 ---> saved as "586a3577e5b5fd54cd7c4f2e363eaf6752e9c75c195f83bf22768fb5228c298d"

/home/opam: (copy (src .) (dst opam-repository/))
2025-12-09 23:35.38 ---> saved as "c1205155acde83167deb77c8f11aa2cd7fd3ac07eff4ffe285ed61ee62e5a3c4"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-12-09 23:36.07 ---> saved as "de246af5a9c27c689f13154bcaeb0aec50e773a7f0bfba74711a50805807dd11"

/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 [81.7 kB]
- Fetched 172 kB in 0s (750 kB/s)
- Reading package lists...
- 
2025-12-09 23:36.09 ---> saved as "206921a4cfbd84906373e3998f000d81b9dc17621e6e44ed3c80dd334ccab3a0"

/home/opam: (run (shell "opam pin add -k version -yn flint.0.4.2 0.4.2"))
flint is now pinned to version 0.4.2
2025-12-09 23:36.09 ---> saved as "a36994052b70680dae0aa2cb04d20057c33a9788e5b6f105f0aa39df82e409c6"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall flint.0.4.2;\
                        \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 \"$pkg\" != 'flint.0.4.2' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
flint.0.4.2 is not installed. Install it? [Y/n] y
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 4.09.1
    - flint >= 0.4.2 -> ocaml >= 4.10 -> dkml-base-compiler
    You can temporarily relax the switch invariant with `--update-invariant'
  * Incompatible packages:
    - (invariant) -> ocaml-base-compiler = 4.09.1
    - flint >= 0.4.2 -> ocaml >= 4.10 -> ocaml-variants (< 4.11.3~ | >= 4.11.3)
  * Missing dependency:
    - flint >= 0.4.2 -> ocaml >= 4.10 -> ocaml-variants < 4.10.2~ -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'
  * Missing dependency:
    - flint >= 0.4.2 -> ocaml >= 4.10 -> ocaml-variants >= 4.11.3 -> system-msvc
    unmet availability conditions: 'os = "win32"'

No solution found, exiting
"/usr/bin/env" "bash" "-c" "opam reinstall flint.0.4.2;
        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 "$pkg" != 'flint.0.4.2' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 20
2025-12-09 23:37.08: Job failed: Failed: Build failed
2025-12-09 23:37.08: Log analysis:
2025-12-09 23:37.08: >>> 
No solution found, exiting
 (score = 100)
2025-12-09 23:37.08: [SKIP] Package not available