(for PR #27920)

2025-05-24 17:48.54: New job: build ocaml-fsrs.0.1.0-alpha3, using opam 2.1
                              from https://github.com/ocaml/opam-repository.git#refs/pull/27920/head (67423ee84b72a0a7e34b6e84fbb039f220f355cd)
                              on debian-12-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/27920/head" && git reset --hard 67423ee8
git fetch origin master
git merge --no-edit 428327733193cda496cf0f6a6e47f2172aab591e
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-4.14@sha256:3244bdc5a8a334bd7c4f552ea00747039a9cec8c46437471b45bca4791eef453
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn ocaml-fsrs.0.1.0-alpha3 0.1.0-alpha3
RUN opam reinstall ocaml-fsrs.0.1.0-alpha3; \
    res=$?; \
    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 "\"debian-12\""; 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:debian-12-ocaml-4.14@sha256:3244bdc5a8a334bd7c4f552ea00747039a9cec8c46437471b45bca4791eef453-ocaml-fsrs.0.1.0-alpha3-67423ee84b72a0a7e34b6e84fbb039f220f355cd"
2025-05-24 17:48.54: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-4.14@sha256:3244bdc5a8a334bd7c4f552ea00747039a9cec8c46437471b45bca4791eef453)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/bin/opam-2.1 /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 \"\\\"debian-12\\\"\"; 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-c6.sw.ocaml.org
All commits already cached
Updating files:  97% (22546/23088)
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:debian-12-ocaml-4.14@sha256:3244bdc5a8a334bd7c4f552ea00747039a9cec8c46437471b45bca4791eef453)
2025-05-24 17:49.30 ---> using "8fc05cdda16df548920c1f78c4fe559e1928343c0387f98662ad0cea1d69c1c6" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam"))
2025-05-24 17:49.30 ---> saved as "1503f092aa5ace56ce22be566bd192929c973227ec7611f94351fe8138ce9f30"

/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 development version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.1, 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
2025-05-24 17:51.06 ---> saved as "9b43b29e1a3a45212663c0c80c0d035f5270dcdd09fbdaaf75f9b43dcc45e952"

/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         2.1.6 (263921263e1f745613e2882745114b7b08f3608b) 
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=debian os-version=12
# solver               builtin-0install
# install-criteria     
# upgrade-criteria     
# jobs                 39
# repositories         1 (version-controlled)
# pinned               1 (version)
# current-switch       4.14
# 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 17:51.09 ---> saved as "79c16850973881764dcbaa9f45e8c90db6f040bcd8159ec9850e62411aa5ab8b"

/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 17:51.16 ---> saved as "d4332c311b07f7c58de71b3897f7d118e13a87be59a93c74748935b37d6a242c"

/home/opam: (copy (src .) (dst opam-repository/))
2025-05-24 17:51.24 ---> saved as "d807d48e4f8cbd7b9e2164293fa64e927c30fba2fe53d67ed727e9e90cc6e9b3"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-05-24 17:51.41 ---> saved as "c7fd26702d22efb676749065a62f6d3e5c465722b6ac90ead64c97e223c6063d"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Get:1 http://deb.debian.org/debian bookworm InRelease [151 kB]
- Get:2 http://deb.debian.org/debian bookworm-updates InRelease [55.4 kB]
- Get:3 http://deb.debian.org/debian-security bookworm-security InRelease [48.0 kB]
- Get:4 http://deb.debian.org/debian bookworm/main amd64 Packages [8793 kB]
- Get:5 http://deb.debian.org/debian-security bookworm-security/main amd64 Packages [261 kB]
- Fetched 9308 kB in 1s (6907 kB/s)
- Reading package lists...
- 
2025-05-24 17:51.43 ---> saved as "7aace9bf6244aec4968bccf601fba28afedc4b385672ad3581b542f9ea4f2b58"

/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 17:51.44 ---> saved as "c530246eba093049898d9966656e4e4d6c9a1628c750c1896d8dfcd6a3cdf21d"

/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 \"\\\"debian-12\\\"\"; 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 ocamlbuild         0.16.1        [required by ptime]
  - install dune               3.19.0        [required by ocaml-fsrs]
  - install seq                base          [required by timedesc]
  - install ocamlfind          1.9.8         [required by ptime]
  - install timedesc-tzlocal   3.1.0         [required by timedesc]
  - install timedesc-tzdb      3.1.0         [required by timedesc]
  - install sexplib0           v0.16.0       [required by base]
  - install result             1.5           [required by timedesc]
  - install ocaml-syntax-shims 1.0.0         [required by angstrom]
  - install csexp              1.5.2         [required by dune-configurator]
  - install topkg              1.0.8         [required by ptime]
  - install dune-configurator  3.19.0        [required by base]
  - install ptime              1.2.0         [required by timedesc]
  - install bigstringaf        0.10.0        [required by angstrom]
  - install base               v0.16.4       [required by ocaml-fsrs]
  - install angstrom           0.16.1        [required by timedesc]
  - install timedesc           3.1.0         [required by ocaml-fsrs]
  - install ocaml-fsrs         0.1.0-alpha3*
===== 18 to install =====

<><> 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  (cached)
-> retrieved 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  (cached)
-> retrieved timedesc-tzdb.3.1.0  (cached)
-> retrieved 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 result.1.5
-> installed sexplib0.v0.16.0
-> installed timedesc-tzdb.3.1.0
-> installed timedesc-tzlocal.3.1.0
-> installed ocaml-syntax-shims.1.0.0
-> 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
+- 
# Run eval $(opam env) to update the current shell environment

The former state can be restored with:
    /usr/bin/opam switch import "/home/opam/.opam/4.14/.opam-switch/backup/state-20250524175145.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 "\"debian-12\""; 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 17:53.08: Job failed: Failed: Build failed
2025-05-24 17:53.08: Log analysis:
2025-05-24 17:53.08: >>> 
[ERROR] Failed to get sources of ocaml-fsrs.0.1.0-alpha3: Bad checksum
 (score = 25)
2025-05-24 17:53.08: Failed to get sources of ocaml-fsrs.0.1.0-alpha3: Bad checksum