(for PR #27920)

2025-11-10 16:56.20: New job: build ocaml-fsrs.0.1.0-alpha3, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/27920/head (67423ee84b72a0a7e34b6e84fbb039f220f355cd)
                              on alpine-3.22-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/27920/head" && git reset --hard 67423ee8
git fetch origin master
git merge --no-edit b6a264c784afa1e19f7a926fc10d49010ad12be4
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:alpine-3.22-ocaml-4.14@sha256:035343faa2345fbb738069f2d899570ced75942aab3c76ec7fd2353ed127049a
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn ocaml-fsrs.0.1.0-alpha3 0.1.0-alpha3
RUN opam reinstall ocaml-fsrs.0.1.0-alpha3; \
    res=$?; \
    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 "\"alpine-3.22\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'ocaml-fsrs.0.1.0-alpha3' && partial_fails="$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 .

2025-11-10 16:56.21: Using cache hint "ocaml/opam:alpine-3.22-ocaml-4.14@sha256:035343faa2345fbb738069f2d899570ced75942aab3c76ec7fd2353ed127049a-ocaml-fsrs.0.1.0-alpha3-67423ee84b72a0a7e34b6e84fbb039f220f355cd"
2025-11-10 16:56.21: Using OBuilder spec:
((from ocaml/opam:alpine-3.22-ocaml-4.14@sha256:035343faa2345fbb738069f2d899570ced75942aab3c76ec7fd2353ed127049a)
 (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 ocaml-fsrs.0.1.0-alpha3 0.1.0-alpha3"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall ocaml-fsrs.0.1.0-alpha3;\
             \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 \"\\\"alpine-3.22\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'ocaml-fsrs.0.1.0-alpha3' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-11-10 16:56.21: Waiting for resource in pool OCluster
2025-11-10 21:18.45: Waiting for worker…
2025-11-10 21:25.15: Got resource from pool OCluster
Building on asteria.caelum.ci.dev
All commits already cached
HEAD is now at b6a264c784 Merge pull request #28853 from AltGr/catala100
Merge made by the 'ort' strategy.
 packages/ocaml-fsrs/ocaml-fsrs.0.1.0-alpha3/opam | 41 ++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 packages/ocaml-fsrs/ocaml-fsrs.0.1.0-alpha3/opam

(from ocaml/opam:alpine-3.22-ocaml-4.14@sha256:035343faa2345fbb738069f2d899570ced75942aab3c76ec7fd2353ed127049a)
2025-11-10 21:25.29 ---> using "531dd882a2fae5a34a8bfa5ee93af1613955008dcdcd99be6da6c29a1733a42a" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2025-11-10 21:25.29 ---> using "5a6c475228238559086b0ae1d567a6d46415077fd45cc94075ef1ad6fb203311" 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
2025-11-10 21:25.29 ---> using "be58e76ddc4026c7cb0381161cd8022c146cb46f7c56ee7ce5b508d8f20470da" 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~alpha1
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=alpine os-version=3.22.2
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 255
# 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
2025-11-10 21:25.29 ---> using "41a402bb9a1f269e83edd144d478274457c806d6af3c7cadbc83018b44e291fa" 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/"))
2025-11-10 21:25.29 ---> using "b55ea0dc1e22e5598950c2a61d6e1d9c500a9c4efabb445967c24911e9648cfe" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-11-10 21:25.43 ---> saved as "e94b3a6e59ca103ca7410095bfd2cf8ac50d50871e4e1756ac84ba6bc69c00c2"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-11-10 21:26.04 ---> saved as "1602bb23dc24de637856320d63024d9b8f86f781c78fa1980cfc85db08c5a751"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apk" "update"
- fetch https://dl-cdn.alpinelinux.org/alpine/v3.22/main/x86_64/APKINDEX.tar.gz
- fetch https://dl-cdn.alpinelinux.org/alpine/v3.22/community/x86_64/APKINDEX.tar.gz
- fetch https://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz
- fetch https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz
- fetch https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz
- v3.22.2-172-ge6bdca47b2e [https://dl-cdn.alpinelinux.org/alpine/v3.22/main]
- v3.22.2-166-gebde2617572 [https://dl-cdn.alpinelinux.org/alpine/v3.22/community]
- v20251016-1927-g48290b09546 [https://dl-cdn.alpinelinux.org/alpine/edge/main]
- v20251016-1950-g58b087c61e9 [https://dl-cdn.alpinelinux.org/alpine/edge/community]
- v20251016-1945-gf3557d4773e [https://dl-cdn.alpinelinux.org/alpine/edge/testing]
- OK: 60030 distinct packages available
2025-11-10 21:26.06 ---> saved as "4e8622b9057b0c47580cf5e2710feff01a9da59ed4def2bb2ce4b57f03f450ab"

/home/opam: (run (shell "opam pin add -k version -yn ocaml-fsrs.0.1.0-alpha3 0.1.0-alpha3"))
ocaml-fsrs is now pinned to version 0.1.0-alpha3
2025-11-10 21:26.07 ---> saved as "e5d43142094de7eb939c8892dfaa5c7aaf18b3e186cce5fab46428a2bfb7a3d3"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall ocaml-fsrs.0.1.0-alpha3;\
                        \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 \"\\\"alpine-3.22\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'ocaml-fsrs.0.1.0-alpha3' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
ocaml-fsrs.0.1.0-alpha3 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 18 packages
  - install angstrom           0.16.1                [required by timedesc]
  - install base               v0.16.4               [required by ocaml-fsrs]
  - install bigstringaf        0.10.0                [required by angstrom]
  - install csexp              1.5.2                 [required by dune-configurator]
  - install dune               3.20.2                [required by ocaml-fsrs]
  - install dune-configurator  3.20.2                [required by base]
  - install ocaml-fsrs         0.1.0-alpha3 (pinned)
  - install ocaml-syntax-shims 1.0.0                 [required by angstrom]
  - install ocamlbuild         0.16.1                [required by ptime]
  - install ocamlfind          1.9.8                 [required by ptime]
  - install ptime              1.2.0                 [required by timedesc]
  - install result             1.5                   [required by timedesc]
  - install seq                base                  [required by timedesc]
  - install sexplib0           v0.16.0               [required by base]
  - install timedesc           3.1.0                 [required by ocaml-fsrs]
  - install timedesc-tzdb      3.1.0                 [required by timedesc]
  - install timedesc-tzlocal   3.1.0                 [required by timedesc]
  - install topkg              1.1.1                 [required by ptime]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved angstrom.0.16.1  (cached)
-> retrieved base.v0.16.4  (cached)
-> retrieved bigstringaf.0.10.0  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved dune.3.20.2, dune-configurator.3.20.2  (cached)
[ERROR] Failed to get sources of ocaml-fsrs.0.1.0-alpha3: Bad checksum
-> retrieved ocaml-syntax-shims.1.0.0  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved ptime.1.2.0  (cached)
-> retrieved result.1.5  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved sexplib0.v0.16.0  (cached)
-> retrieved timedesc.3.1.0, timedesc-tzdb.3.1.0, timedesc-tzlocal.3.1.0  (cached)
-> retrieved topkg.1.1.1  (cached)
-> installed ocamlfind.1.9.8
-> installed ocamlbuild.0.16.1
-> installed topkg.1.1.1
-> installed ptime.1.2.0
-> installed dune.3.20.2
-> installed csexp.1.5.2
-> installed ocaml-syntax-shims.1.0.0
-> installed result.1.5
-> installed sexplib0.v0.16.0
-> installed timedesc-tzlocal.3.1.0
-> installed timedesc-tzdb.3.1.0
-> installed dune-configurator.3.20.2
-> installed bigstringaf.0.10.0
-> installed angstrom.0.16.1
-> installed timedesc.3.1.0
-> installed base.v0.16.4

#=== ERROR while fetching sources for ocaml-fsrs.0.1.0-alpha3 =================#
OpamSolution.Fetch_fail("https://github.com/chaosarium/ocaml-fsrs/archive/refs/tags/0.1.0-alpha3.tar.gz (Bad checksum, expected sha256=e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855)")


<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - fetch ocaml-fsrs 0.1.0-alpha3
+- 
+- The following changes have been performed
| - install angstrom           0.16.1
| - install base               v0.16.4
| - install bigstringaf        0.10.0
| - install csexp              1.5.2
| - install dune               3.20.2
| - install dune-configurator  3.20.2
| - install ocaml-syntax-shims 1.0.0
| - install ocamlbuild         0.16.1
| - install ocamlfind          1.9.8
| - install ptime              1.2.0
| - install result             1.5
| - install seq                base
| - install sexplib0           v0.16.0
| - install timedesc           3.1.0
| - install timedesc-tzdb      3.1.0
| - install timedesc-tzlocal   3.1.0
| - install topkg              1.1.1
+- 
# To update the current shell environment, run: eval $(opam env)

The former state can be restored with:
    /usr/bin/opam switch import "/home/opam/.opam/4.14/.opam-switch/backup/state-20251110212608.export"
"/usr/bin/env" "bash" "-c" "opam reinstall ocaml-fsrs.0.1.0-alpha3;
        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 "\"alpine-3.22\""; then
            echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.";
          fi;
          test "$pkg" != 'ocaml-fsrs.0.1.0-alpha3' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 40
2025-11-10 21:26.51: Job failed: Failed: Build failed
2025-11-10 21:26.51: Log analysis:
2025-11-10 21:26.51: >>> 
[ERROR] Failed to get sources of ocaml-fsrs.0.1.0-alpha3: Bad checksum
 (score = 25)
2025-11-10 21:26.51: Failed to get sources of ocaml-fsrs.0.1.0-alpha3: Bad checksum