(for PR #27920)

2025-11-10 16:56.21: 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 ubuntu-24.04-ocaml-5.4/riscv64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/27920/head" && git reset --hard 67423ee8
git fetch origin master
git merge --no-edit b6a264c784afa1e19f7a926fc10d49010ad12be4
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:b698ec12d8ec45f194f9e3281243bda9c038a7a770b0b8b00369f2b6f223f4dc
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn ocaml-fsrs.0.1.0-alpha3 0.1.0-alpha3
RUN opam reinstall ocaml-fsrs.0.1.0-alpha3; \
    res=$?; \
    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 "\"ubuntu-24.04\""; 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:ubuntu-24.04-ocaml-5.4@sha256:b698ec12d8ec45f194f9e3281243bda9c038a7a770b0b8b00369f2b6f223f4dc-ocaml-fsrs.0.1.0-alpha3-67423ee84b72a0a7e34b6e84fbb039f220f355cd"
2025-11-10 16:56.21: Using OBuilder spec:
((from ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:b698ec12d8ec45f194f9e3281243bda9c038a7a770b0b8b00369f2b6f223f4dc)
 (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 \"\\\"ubuntu-24.04\\\"\"; 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 21:01.40: Waiting for worker…
2025-11-11 04:50.49: Got resource from pool OCluster
Building on riscv-bm-01.sw.ci.dev
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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:ubuntu-24.04-ocaml-5.4@sha256:b698ec12d8ec45f194f9e3281243bda9c038a7a770b0b8b00369f2b6f223f4dc)
Unable to find image 'ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:b698ec12d8ec45f194f9e3281243bda9c038a7a770b0b8b00369f2b6f223f4dc' locally
docker.io/ocaml/opam@sha256:b698ec12d8ec45f194f9e3281243bda9c038a7a770b0b8b00369f2b6f223f4dc: Pulling from ocaml/opam
ff47a256ba51: Already exists
07f865b4eced: Already exists
e5a6a81924d1: Already exists
d2993474f6c4: Already exists
be37240cea2e: Already exists
4c7a4c780d69: Already exists
949ffaae844f: Already exists
65007da87cd6: Already exists
376b4433eeaf: Already exists
e4c73e6a1fc1: Already exists
0f0889c64018: Already exists
436990646fd8: Already exists
cb9bd38ee801: Already exists
448d2014f999: Already exists
ea72d1803671: Already exists
3f795e13b111: Already exists
3f795e13b111: Already exists
2137184b4e70: Already exists
ab9789196f84: Already exists
dbbe96a6bdee: Already exists
fb6f4e997127: Already exists
4f4fb700ef54: Already exists
78488e87ab1d: Already exists
1a2baa16ab41: Already exists
52441bed4375: Already exists
58cb70dff4c6: Already exists
43e3d939c3f3: Already exists
5ce97af1f60e: Already exists
8ffc91fd116a: Already exists
ff8c038c8028: Already exists
d57176bef7d7: Already exists
89b975f1d5f3: Already exists
921cd587cd96: Already exists
ae8ab1c95bad: Already exists
1fe2a75aa09d: Already exists
831d70711341: Already exists
07812c06f386: Already exists
859e3a9917cd: Already exists
25a638362d2e: Already exists
e81b913ad5a4: Already exists
ea3380bc20f4: Pulling fs layer
def4aa273eac: Pulling fs layer
5c0eef42092a: Pulling fs layer
a50ec4935ba1: Pulling fs layer
1b09137f6468: Pulling fs layer
5d58e43788c9: Pulling fs layer
cc643729de8f: Pulling fs layer
a50ec4935ba1: Waiting
1b09137f6468: Waiting
5d58e43788c9: Waiting
cc643729de8f: Waiting
def4aa273eac: Verifying Checksum
def4aa273eac: Download complete
ea3380bc20f4: Download complete
ea3380bc20f4: Pull complete
5c0eef42092a: Verifying Checksum
5c0eef42092a: Download complete
def4aa273eac: Pull complete
1b09137f6468: Verifying Checksum
1b09137f6468: Download complete
5d58e43788c9: Verifying Checksum
5d58e43788c9: Download complete
cc643729de8f: Verifying Checksum
cc643729de8f: Download complete
5c0eef42092a: Pull complete
a50ec4935ba1: Verifying Checksum
a50ec4935ba1: Download complete
a50ec4935ba1: Pull complete
1b09137f6468: Pull complete
5d58e43788c9: Pull complete
cc643729de8f: Pull complete
Digest: sha256:b698ec12d8ec45f194f9e3281243bda9c038a7a770b0b8b00369f2b6f223f4dc
Status: Downloaded newer image for ocaml/opam@sha256:b698ec12d8ec45f194f9e3281243bda9c038a7a770b0b8b00369f2b6f223f4dc
2025-11-11 04:51.01 ---> using "caa6674a25a88389569217fd94abf6dc3d8a42ad0c02221796f91bef8e6362c2" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2025-11-11 04:51.01 ---> using "fd07174c808e586de402af712771f0f241b080e2367ef9f7681d75cf818919c2" 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
2025-11-11 04:51.01 ---> using "514df06474b49af68e096e6a7c5db077ce91809c08e70c13f33e27f18784df6b" 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=riscv64 os=linux os-distribution=ubuntu os-version=24.04
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 3
# repositories         1 (version-controlled)
# pinned               1 (version)
# current-switch       5.4
# invariant            ["ocaml-base-compiler" {>= "5.4.0"}]
# compiler-packages    ocaml-base-compiler.5.4.0, ocaml-compiler.5.4.0, ocaml-options-vanilla.1
# 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
2025-11-11 04:51.01 ---> using "2c30bc4cf24536cb906aa854b81fc82059550ba6613f56620345538a58c14aa3" 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/"))
2025-11-11 04:51.01 ---> using "76c050f90e9dc44fe68828988f11d21f4c996e2a34a4e626a28cb52e589e4c43" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-11-11 04:51.29 ---> saved as "4b8fd27d3369994667415ed893473a181075e78e73ecfd4866b4ab919c8b4f40"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-11-11 04:53.01 ---> saved as "d05e1a37e7103b70f0dc607b2bf2060bba6b4e412147dc7fa8b43423ec340f11"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://ports.ubuntu.com/ubuntu-ports noble InRelease
- Hit:2 http://ports.ubuntu.com/ubuntu-ports noble-updates InRelease
- Hit:3 http://ports.ubuntu.com/ubuntu-ports noble-backports InRelease
- Hit:4 http://ports.ubuntu.com/ubuntu-ports noble-security InRelease
- Reading package lists...
- 
2025-11-11 04:53.09 ---> saved as "11410a225fa0ed8965f5a0b6124827d91f1d5dab35c7f566d189d8847bcc7a17"

/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
2025-11-11 04:53.11 ---> saved as "acfb213431b57614f2ec128f3acbbf16938eaa67c5992c2fcbcb1eb110148fb8"

/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 \"\\\"ubuntu-24.04\\\"\"; 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 19 packages
  - install angstrom                0.16.1                [required by timedesc]
  - install base                    v0.17.3               [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 ocaml_intrinsics_kernel v0.17.1               [required by base]
  - 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                v0.17.0               [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.v0.17.3  (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 ocaml_intrinsics_kernel.v0.17.1  (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)
-> retrieved sexplib0.v0.17.0  (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 seq.base
-> 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_intrinsics_kernel.v0.17.1
-> installed result.1.5
-> installed ocaml-syntax-shims.1.0.0
-> installed sexplib0.v0.17.0
-> installed timedesc-tzdb.3.1.0
-> installed timedesc-tzlocal.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.v0.17.3

#=== 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                    v0.17.3
| - 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 ocaml_intrinsics_kernel v0.17.1
| - install ocamlbuild              0.16.1
| - install ocamlfind               1.9.8
| - install ptime                   1.2.0
| - install result                  1.5
| - install seq                     base
| - install sexplib0                v0.17.0
| - 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/5.4/.opam-switch/backup/state-20251111045313.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 "\"ubuntu-24.04\""; 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
2025-11-11 05:00.13: Job failed: Failed: Build failed
2025-11-11 05:00.13: Log analysis:
2025-11-11 05:00.13: >>> 
[ERROR] Failed to get sources of ocaml-fsrs.0.1.0-alpha3: Bad checksum
 (score = 25)
2025-11-11 05:00.13: Failed to get sources of ocaml-fsrs.0.1.0-alpha3: Bad checksum