(for PR #27920)

2025-05-24 17:48.54: New job: build ocaml-fsrs.0.1.0-alpha3, using opam 2.3
                              from https://github.com/ocaml/opam-repository.git#refs/pull/27920/head (67423ee84b72a0a7e34b6e84fbb039f220f355cd)
                              on ubuntu-24.10-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/27920/head" && git reset --hard 67423ee8
git fetch origin master
git merge --no-edit 428327733193cda496cf0f6a6e47f2172aab591e
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:ubuntu-24.10-ocaml-4.14@sha256:bda0b8f2ebcbe30ade287195cc6a7024c8701a2c2417fee04dc649d5c4d3efe6
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn ocaml-fsrs.0.1.0-alpha3 0.1.0-alpha3
RUN opam reinstall ocaml-fsrs.0.1.0-alpha3; \
    res=$?; \
    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-24.10\""; 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 .

2025-05-24 17:48.54: Using cache hint "ocaml/opam:ubuntu-24.10-ocaml-4.14@sha256:bda0b8f2ebcbe30ade287195cc6a7024c8701a2c2417fee04dc649d5c4d3efe6-ocaml-fsrs.0.1.0-alpha3-67423ee84b72a0a7e34b6e84fbb039f220f355cd"
2025-05-24 17:48.54: Using OBuilder spec:
((from ocaml/opam:ubuntu-24.10-ocaml-4.14@sha256:bda0b8f2ebcbe30ade287195cc6a7024c8701a2c2417fee04dc649d5c4d3efe6)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/bin/opam-2.3 /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-24.10\\\"\"; 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"))
)

2025-05-24 17:48.54: Waiting for resource in pool OCluster
2025-05-24 17:48.54: Waiting for worker…
2025-05-24 17:48.55: Got resource from pool OCluster
Building on x86-bm-c7.sw.ocaml.org
All commits already cached
Updating files:  93% (21485/23088)
Updating files:  94% (21703/23088)
Updating files:  95% (21934/23088)
Updating files:  96% (22165/23088)
Updating files:  97% (22396/23088)
Updating files:  98% (22627/23088)
Updating files:  99% (22858/23088)
Updating files: 100% (23088/23088)
Updating files: 100% (23088/23088), done.
HEAD is now at 4283277331 Merge pull request #27903 from patricoferris/patch-2
Updating 4283277331..67423ee84b
Fast-forward
 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-24.10-ocaml-4.14@sha256:bda0b8f2ebcbe30ade287195cc6a7024c8701a2c2417fee04dc649d5c4d3efe6)
Unable to find image 'ocaml/opam:ubuntu-24.10-ocaml-4.14@sha256:bda0b8f2ebcbe30ade287195cc6a7024c8701a2c2417fee04dc649d5c4d3efe6' locally
docker.io/ocaml/opam@sha256:bda0b8f2ebcbe30ade287195cc6a7024c8701a2c2417fee04dc649d5c4d3efe6: Pulling from ocaml/opam
8fe829873a07: Pulling fs layer
eb3d9c95ed86: Pulling fs layer
8ef8df73ad6e: Pulling fs layer
19e4848261ff: Pulling fs layer
8ef8df73ad6e: Waiting
6f5036f02e5d: Pulling fs layer
19e4848261ff: Waiting
6f5036f02e5d: Waiting
eb3d9c95ed86: Verifying Checksum
eb3d9c95ed86: Download complete
8ef8df73ad6e: Verifying Checksum
8ef8df73ad6e: Download complete
19e4848261ff: Verifying Checksum
19e4848261ff: Download complete
6f5036f02e5d: Verifying Checksum
8fe829873a07: Verifying Checksum
8fe829873a07: Download complete
8fe829873a07: Pull complete
eb3d9c95ed86: Pull complete
8ef8df73ad6e: Pull complete
19e4848261ff: Pull complete
6f5036f02e5d: Pull complete
Digest: sha256:bda0b8f2ebcbe30ade287195cc6a7024c8701a2c2417fee04dc649d5c4d3efe6
Status: Downloaded newer image for ocaml/opam@sha256:bda0b8f2ebcbe30ade287195cc6a7024c8701a2c2417fee04dc649d5c4d3efe6
2025-05-24 17:51.25 ---> saved as "72717d05a71db332f638e3471fb1ead49edd1237d9ab814a71a0b4841a4b80f5"

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam"))
2025-05-24 17:51.25 ---> saved as "ddebb60fb172a9fc39e64621bb1b6e3201c8e36ca121fc5140f19d8da50eb022"

/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
This development 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.

Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2025-05-24 17:51.56 ---> saved as "7063df0c560e0f380c00a9a1abf31f654fa36dd73f227cacd0afdc0f7eb29911"

/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         2.3.0 (35acd0c5abc5e66cdbd5be16ba77aa6c33a4c724)
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=ubuntu os-version=24.10
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 31
# 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
2025-05-24 17:51.57 ---> saved as "c1fbdc8fff009d5296887c187e3675feab302a614bf8151b077422c7cfa6e2af"

/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/"))
2025-05-24 17:52.04 ---> saved as "559d062a13c5552917d82e1af239aa2e84f3b85b5e3b581400575bf9099e4832"

/home/opam: (copy (src .) (dst opam-repository/))
2025-05-24 17:52.18 ---> saved as "5fbd018a3f472891b5a8ef4ba6226fa32a2ed1ef3f9f348f5f61a835771aec51"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-05-24 17:52.40 ---> saved as "b4a7bbe7555ee9173dfce52cd395cfd244d88dd6215d5c6c0e125535fe3a4193"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://archive.ubuntu.com/ubuntu oracular InRelease
- Get:2 http://archive.ubuntu.com/ubuntu oracular-updates InRelease [126 kB]
- Get:3 http://archive.ubuntu.com/ubuntu oracular-backports InRelease [126 kB]
- Get:4 http://archive.ubuntu.com/ubuntu oracular-updates/universe amd64 Packages [327 kB]
- Get:5 http://security.ubuntu.com/ubuntu oracular-security InRelease [126 kB]
- Get:6 http://archive.ubuntu.com/ubuntu oracular-updates/main amd64 Packages [535 kB]
- Get:7 http://archive.ubuntu.com/ubuntu oracular-updates/restricted amd64 Packages [312 kB]
- Get:8 http://security.ubuntu.com/ubuntu oracular-security/restricted amd64 Packages [306 kB]
- Get:9 http://security.ubuntu.com/ubuntu oracular-security/main amd64 Packages [396 kB]
- Get:10 http://security.ubuntu.com/ubuntu oracular-security/universe amd64 Packages [246 kB]
- Fetched 2500 kB in 1s (2666 kB/s)
- Reading package lists...
- 
2025-05-24 17:52.42 ---> saved as "bf68db6923e48bf55010c96c4b490baf4b8538c91272cdcb2fbf654664464afb"

/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
2025-05-24 17:52.43 ---> saved as "5d397bd19fcea16338afe2c5704e46a042758484cbd6c591d099fe1742d6c865"

/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-24.10\\\"\"; 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               3.19.0                [required by ocaml-fsrs]
  - install dune-configurator  3.19.0                [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              1.0.8                 [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.3.19.0, dune-configurator.3.19.0  (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.1.0.8  (cached)
-> installed ocamlfind.1.9.8
-> installed ocamlbuild.0.16.1
-> installed topkg.1.0.8
-> installed ptime.1.2.0
-> installed dune.3.19.0
-> installed csexp.1.5.2
-> installed ocaml-syntax-shims.1.0.0
-> installed result.1.5
-> installed sexplib0.v0.16.0
-> installed timedesc-tzdb.3.1.0
-> installed timedesc-tzlocal.3.1.0
-> installed dune-configurator.3.19.0
-> 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               3.19.0
| - install dune-configurator  3.19.0
| - 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              1.0.8
+- 
# 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-20250524175243.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-24.10\""; 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
2025-05-24 17:53.39: Job failed: Failed: Build failed
2025-05-24 17:53.39: Log analysis:
2025-05-24 17:53.39: >>> 
[ERROR] Failed to get sources of ocaml-fsrs.0.1.0-alpha3: Bad checksum
 (score = 25)
2025-05-24 17:53.39: Failed to get sources of ocaml-fsrs.0.1.0-alpha3: Bad checksum