(not at the head of any monitored branch or PR)
2025-11-10 14:41.57: New job: test hl_yaml.1.0.0 with lwt.6.0.0~beta00, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/28558/head (db50ce02bd0238ef1431a20de40a98e9f360a8c0)
                              on debian-13-ocaml-5.4/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/28558/head" && git reset --hard db50ce02
git fetch origin master
git merge --no-edit 21f97b2e6d7c617fc0a79cc8e59b2e10690960e1
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.4@sha256:0b68f45799a4ff0af182b78277d652e076097f37cbcb04aa9d74bfbd7d300e58
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn lwt.6.0.0~beta00 6.0.0~beta00
RUN opam reinstall lwt.6.0.0~beta00; \
    res=$?; \
    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 "$pkg" != 'lwt.6.0.0~beta00' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN opam reinstall hl_yaml.1.0.0; \
    res=$?; \
    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 "$pkg" != 'hl_yaml.1.0.0' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN (opam reinstall --with-test hl_yaml.1.0.0) || true
RUN opam reinstall --with-test --verbose hl_yaml.1.0.0; \
    res=$?; \
    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 "$pkg" != 'hl_yaml.1.0.0' && partial_fails="$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 14:41.57: Using cache hint "ocaml/opam:debian-13-ocaml-5.4@sha256:0b68f45799a4ff0af182b78277d652e076097f37cbcb04aa9d74bfbd7d300e58-lwt.6.0.0~beta00-hl_yaml.1.0.0-db50ce02bd0238ef1431a20de40a98e9f360a8c0"
2025-11-10 14:41.57: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.4@sha256:0b68f45799a4ff0af182b78277d652e076097f37cbcb04aa9d74bfbd7d300e58)
 (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 lwt.6.0.0~beta00 6.0.0~beta00"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall lwt.6.0.0~beta00;\
             \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 \"$pkg\" != 'lwt.6.0.0~beta00' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall hl_yaml.1.0.0;\
             \n        res=$?;\
             \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 \"$pkg\" != 'hl_yaml.1.0.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (network host)
      (shell "(opam reinstall --with-test hl_yaml.1.0.0) || true"))
 (run (shell  "opam reinstall --with-test --verbose hl_yaml.1.0.0;\
             \n        res=$?;\
             \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 \"$pkg\" != 'hl_yaml.1.0.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-11-10 14:41.57: Waiting for resource in pool OCluster
2025-11-10 15:25.31: Waiting for worker…
2025-11-10 15:29.03: Got resource from pool OCluster
Building on asteria.caelum.ci.dev
All commits already cached
HEAD is now at 21f97b2e6d Merge pull request #28836 from dbuenzli/b0-publish-bytesrw.0.3.0
Merge made by the 'ort' strategy.
 packages/lwt/lwt.6.0.0~beta00/opam               | 67 ++++++++++++++++++++++++
 packages/lwt_direct/lwt_direct.6.0.0~beta00/opam | 42 +++++++++++++++
 2 files changed, 109 insertions(+)
 create mode 100644 packages/lwt/lwt.6.0.0~beta00/opam
 create mode 100644 packages/lwt_direct/lwt_direct.6.0.0~beta00/opam

(from ocaml/opam:debian-13-ocaml-5.4@sha256:0b68f45799a4ff0af182b78277d652e076097f37cbcb04aa9d74bfbd7d300e58)
Unable to find image 'ocaml/opam:debian-13-ocaml-5.4@sha256:0b68f45799a4ff0af182b78277d652e076097f37cbcb04aa9d74bfbd7d300e58' locally
docker.io/ocaml/opam@sha256:0b68f45799a4ff0af182b78277d652e076097f37cbcb04aa9d74bfbd7d300e58: Pulling from ocaml/opam
8a986146d58a: Pulling fs layer
8a986146d58a: Verifying Checksum
8a986146d58a: Download complete
8a986146d58a: Pull complete
Digest: sha256:0b68f45799a4ff0af182b78277d652e076097f37cbcb04aa9d74bfbd7d300e58
Status: Downloaded newer image for ocaml/opam@sha256:0b68f45799a4ff0af182b78277d652e076097f37cbcb04aa9d74bfbd7d300e58
2025-11-10 15:29.08 ---> using "9f1bc9b76367c8d29be355965b06cbbd4aeb05818e6e1915136daad8eabad361" 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 15:29.08 ---> using "7167cf2609d50147b3cfe8b00e0f1981e785c56c3c47bd6356e0f3732d6bafd7" 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
[NOTE] The 'jobs' option was reset, its value was 71 and its new value will vary according to the current number of cores on your machine. You can restore the fixed value using:
           opam option jobs=71 --global
Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2025-11-10 15:29.08 ---> using "db7b310c65b31b91b9590efe8919a126934a7e42418115cd912ed2612662d318" 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=debian os-version=13
# 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       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
2025-11-10 15:29.08 ---> using "370daf58656f453890b2ebe0d8367763e6fea8bbb7471d68f3d783ad40f9e8ee" 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 15:29.08 ---> using "d7d7d34009e7cd5bb4f41663ceab70bbd4c419269902dabc72ab91552d36d91d" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-11-10 15:29.09 ---> using "fcd819d209baf58060026dcfe02be8dd90eb259aa873cfb25ae35c0c8076aac2" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-11-10 15:29.09 ---> using "10ba8df5720754045d2e98ae8fb80dd90f362761469b5e50a1d789244f0270f3" from cache

/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]
- Fetched 90.7 kB in 0s (1036 kB/s)
- Reading package lists...
2025-11-10 15:29.09 ---> using "477af5ce466e8ba2f8e6be3ec0e272fb83ea119e026b7411512bb0905b823b2c" from cache

/home/opam: (run (shell "opam pin add -k version -yn lwt.6.0.0~beta00 6.0.0~beta00"))
lwt is now pinned to version 6.0.0~beta00
2025-11-10 15:29.09 ---> using "42dccd04f3893e32de5b301c3a927fc162c8ee981eb148a6242f0af3a4e7aa07" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall lwt.6.0.0~beta00;\
                        \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 \"$pkg\" != 'lwt.6.0.0~beta00' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
lwt.6.0.0~beta00 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 9 packages
  - install base-bytes        base                  [required by ocplib-endian]
  - install cppo              1.8.0                 [required by lwt]
  - install csexp             1.5.2                 [required by dune-configurator]
  - install domain_shims      0.1.0                 [required by lwt]
  - install dune              3.20.2                [required by lwt]
  - install dune-configurator 3.20.2                [required by lwt]
  - install lwt               6.0.0~beta00 (pinned)
  - install ocamlfind         1.9.8                 [required by base-bytes]
  - install ocplib-endian     1.2                   [required by lwt]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved cppo.1.8.0  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved domain_shims.0.1.0  (cached)
-> retrieved dune.3.20.2, dune-configurator.3.20.2  (cached)
-> retrieved lwt.6.0.0~beta00  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved ocplib-endian.1.2  (cached)
-> installed ocamlfind.1.9.8
-> installed base-bytes.base
-> installed dune.3.20.2
-> installed domain_shims.0.1.0
-> installed csexp.1.5.2
-> installed cppo.1.8.0
-> installed ocplib-endian.1.2
-> installed dune-configurator.3.20.2
-> installed lwt.6.0.0~beta00
Done.
# To update the current shell environment, run: eval $(opam env)
2025-11-10 15:29.09 ---> using "7d19709798d6b95bd061256c354546cbc3e2d2fc97783c602cc38b64a7b8afa1" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall hl_yaml.1.0.0;\
                        \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 \"$pkg\" != 'hl_yaml.1.0.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
hl_yaml.1.0.0 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 21 packages
  - install astring             0.8.5   [required by bos]
  - install bigarray-compat     1.1.0   [required by ctypes]
  - install bos                 0.2.1   [required by yaml]
  - install ctypes              0.23.0  [required by yaml]
  - install fmt                 0.11.0  [required by bos]
  - install fpath               0.7.3   [required by bos]
  - install hl_yaml             1.0.0
  - install integers            0.7.0   [required by ctypes]
  - install logs                0.10.0  [required by bos]
  - install ocaml-compiler-libs v0.17.0 [required by ppxlib]
  - install ocamlbuild          0.16.1  [required by bos]
  - install ppx_derivers        1.2.1   [required by ppx_deriving]
  - install ppx_deriving        6.1.1   [required by ppx_deriving_yojson]
  - install ppx_deriving_yojson 3.10.0  [required by hl_yaml]
  - install ppxlib              0.37.0  [required by ppx_deriving_yojson]
  - install rresult             0.7.0   [required by bos]
  - install sexplib0            v0.17.0 [required by ppxlib]
  - install stdlib-shims        0.3.0   [required by ppxlib, integers]
  - install topkg               1.1.1   [required by bos]
  - install yaml                3.2.0   [required by hl_yaml]
  - install yojson              3.0.0   [required by hl_yaml]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved astring.0.8.5  (cached)
-> retrieved bigarray-compat.1.1.0  (cached)
-> retrieved bos.0.2.1  (cached)
-> retrieved ctypes.0.23.0  (cached)
-> retrieved fmt.0.11.0  (cached)
-> retrieved fpath.0.7.3  (cached)
-> retrieved hl_yaml.1.0.0  (cached)
-> retrieved integers.0.7.0  (cached)
-> retrieved logs.0.10.0  (cached)
-> retrieved ocaml-compiler-libs.v0.17.0  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved ppx_derivers.1.2.1  (cached)
-> retrieved ppx_deriving.6.1.1  (cached)
-> retrieved ppx_deriving_yojson.3.10.0  (cached)
-> installed bigarray-compat.1.1.0
-> retrieved ppxlib.0.37.0  (cached)
-> installed ppx_derivers.1.2.1
-> retrieved rresult.0.7.0  (cached)
-> retrieved sexplib0.v0.17.0  (cached)
-> retrieved stdlib-shims.0.3.0  (cached)
-> retrieved topkg.1.1.1  (cached)
-> retrieved yaml.3.2.0  (cached)
-> retrieved yojson.3.0.0  (cached)
-> installed stdlib-shims.0.3.0
-> installed sexplib0.v0.17.0
-> installed integers.0.7.0
-> installed ocaml-compiler-libs.v0.17.0
-> installed yojson.3.0.0
-> installed ocamlbuild.0.16.1
-> installed ctypes.0.23.0
-> installed topkg.1.1.1
-> installed rresult.0.7.0
-> installed fmt.0.11.0
-> installed astring.0.8.5
-> installed logs.0.10.0
-> installed fpath.0.7.3
-> installed ppxlib.0.37.0
-> installed bos.0.2.1
-> installed ppx_deriving.6.1.1
-> installed yaml.3.2.0
-> installed ppx_deriving_yojson.3.10.0
[ERROR] The compilation of hl_yaml.1.0.0 failed at "dune build -p hl_yaml -j 255".

#=== ERROR while compiling hl_yaml.1.0.0 ======================================#
# context              2.5.0~alpha1 | linux/x86_64 | ocaml-base-compiler.5.4.0 | file:///home/opam/opam-repository
# path                 ~/.opam/5.4/.opam-switch/build/hl_yaml.1.0.0
# command              ~/.opam/opam-init/hooks/sandbox.sh build dune build -p hl_yaml -j 255
# exit-code            1
# env-file             ~/.opam/log/hl_yaml-7-f41bf0.env
# output-file          ~/.opam/log/hl_yaml-7-f41bf0.out
### output ###
# (cd _build/default && /home/opam/.opam/5.4/bin/ocamlopt.opt -w -40 -g -I src/.hl_yaml.objs/byte -I src/.hl_yaml.objs/native -I /home/opam/.opam/5.4/lib/bigarray-compat -I /home/opam/.opam/5.4/lib/ctypes -I /home/opam/.opam/5.4/lib/ctypes/stubs -I /home/opam/.opam/5.4/lib/integers -I /home/opam/.opam/5.4/lib/ocaml/str -I /home/opam/.opam/5.4/lib/ocaml/unix -I /home/opam/.opam/5.4/lib/ppx_deriving/runtime -I /home/opam/.opam/5.4/lib/ppx_deriving_yojson/runtime -I /home/opam/.opam/5.4/lib/stdlib-shims -I /home/opam/.opam/5.4/lib/yaml -I /home/opam/.opam/5.4/lib/yaml/bindings -I /home/opam/.opam/5.4/lib/yaml/bindings/types -I /home/opam/.opam/5.4/lib/yaml/c -I /home/opam/.opam/5.4/lib/yaml/ffi -I /home/opam/.opam/5.4/lib/yaml/types -I /home/opam/.opam/5.4/lib/yojson -cmi-file src/.hl_yaml.objs/byte/hl_yaml__Spec.cmi -no-alias-deps -open Hl_yaml__ -o src/.hl_yaml.objs/native/hl_yaml__Spec.cmx -c -impl src/spec.pp.ml)
# File "src/spec.ml", line 89, characters 15-23:
# 89 | | (`Intlit _ | `Tuple _ | `Variant _) as json -> infer (Yojson.Safe.to_basic json :> Yojson.Safe.t)
#                     ^^^^^^^^
# Error: This pattern matches values of type [? `Tuple of 'a ]
#        but a pattern was expected which matches values of type Yojson.Safe.t
#        The second variant type does not allow tag(s) `Tuple
# (cd _build/default && /home/opam/.opam/5.4/bin/ocamlc.opt -w -40 -g -bin-annot -bin-annot-occurrences -I src/.hl_yaml.objs/byte -I /home/opam/.opam/5.4/lib/bigarray-compat -I /home/opam/.opam/5.4/lib/ctypes -I /home/opam/.opam/5.4/lib/ctypes/stubs -I /home/opam/.opam/5.4/lib/integers -I /home/opam/.opam/5.4/lib/ocaml/str -I /home/opam/.opam/5.4/lib/ocaml/unix -I /home/opam/.opam/5.4/lib/ppx_deriving/runtime -I /home/opam/.opam/5.4/lib/ppx_deriving_yojson/runtime -I /home/opam/.opam/5.4/lib/stdlib-shims -I /home/opam/.opam/5.4/lib/yaml -I /home/opam/.opam/5.4/lib/yaml/bindings -I /home/opam/.opam/5.4/lib/yaml/bindings/types -I /home/opam/.opam/5.4/lib/yaml/c -I /home/opam/.opam/5.4/lib/yaml/ffi -I /home/opam/.opam/5.4/lib/yaml/types -I /home/opam/.opam/5.4/lib/yojson -cmi-file src/.hl_yaml.objs/byte/hl_yaml__Spec.cmi -no-alias-deps -open Hl_yaml__ -o src/.hl_yaml.objs/byte/hl_yaml__Spec.cmo -c -impl src/spec.pp.ml)
# File "src/spec.ml", line 89, characters 15-23:
# 89 | | (`Intlit _ | `Tuple _ | `Variant _) as json -> infer (Yojson.Safe.to_basic json :> Yojson.Safe.t)
#                     ^^^^^^^^
# Error: This pattern matches values of type [? `Tuple of 'a ]
#        but a pattern was expected which matches values of type Yojson.Safe.t
#        The second variant type does not allow tag(s) `Tuple
# (cd _build/default && /home/opam/.opam/5.4/bin/ocamlc.opt -w -40 -g -bin-annot -bin-annot-occurrences -I src/.hl_yaml.objs/byte -I /home/opam/.opam/5.4/lib/bigarray-compat -I /home/opam/.opam/5.4/lib/ctypes -I /home/opam/.opam/5.4/lib/ctypes/stubs -I /home/opam/.opam/5.4/lib/integers -I /home/opam/.opam/5.4/lib/ocaml/str -I /home/opam/.opam/5.4/lib/ocaml/unix -I /home/opam/.opam/5.4/lib/ppx_deriving/runtime -I /home/opam/.opam/5.4/lib/ppx_deriving_yojson/runtime -I /home/opam/.opam/5.4/lib/stdlib-shims -I /home/opam/.opam/5.4/lib/yaml -I /home/opam/.opam/5.4/lib/yaml/bindings -I /home/opam/.opam/5.4/lib/yaml/bindings/types -I /home/opam/.opam/5.4/lib/yaml/c -I /home/opam/.opam/5.4/lib/yaml/ffi -I /home/opam/.opam/5.4/lib/yaml/types -I /home/opam/.opam/5.4/lib/yojson -cmi-file src/.hl_yaml.objs/byte/hl_yaml.cmi -no-alias-deps -open Hl_yaml__ -o src/.hl_yaml.objs/byte/hl_yaml.cmo -c -impl src/hl_yaml.pp.ml)
# File "src/hl_yaml.ml", line 114, characters 10-18:
# 114 |          |`Tuple _
#                 ^^^^^^^^
# Error: This pattern matches values of type [? `Tuple of 'a ]
#        but a pattern was expected which matches values of type Yojson.Safe.t
#        The second variant type does not allow tag(s) `Tuple



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - build hl_yaml 1.0.0
+- 
+- The following changes have been performed
| - install astring             0.8.5
| - install bigarray-compat     1.1.0
| - install bos                 0.2.1
| - install ctypes              0.23.0
| - install fmt                 0.11.0
| - install fpath               0.7.3
| - install integers            0.7.0
| - install logs                0.10.0
| - install ocaml-compiler-libs v0.17.0
| - install ocamlbuild          0.16.1
| - install ppx_derivers        1.2.1
| - install ppx_deriving        6.1.1
| - install ppx_deriving_yojson 3.10.0
| - install ppxlib              0.37.0
| - install rresult             0.7.0
| - install sexplib0            v0.17.0
| - install stdlib-shims        0.3.0
| - install topkg               1.1.1
| - install yaml                3.2.0
| - install yojson              3.0.0
+- 
# 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-20251110152910.export"
[WARNING] OPAMCONFIRMLEVEL was ignored because CLI 2.0 was requested and it was introduced in 2.1.
[WARNING] OPAMCONFIRMLEVEL was ignored because CLI 2.0 was requested and it was introduced in 2.1.
"/usr/bin/env" "bash" "-c" "opam reinstall hl_yaml.1.0.0;
        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 "$pkg" != 'hl_yaml.1.0.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 1
2025-11-10 15:29.45: Job failed: Failed: Build failed
2025-11-10 15:29.45: Log analysis:
2025-11-10 15:29.45: >>> 
[ERROR] The compilation of hl_yaml.1.0.0 failed at "dune build -p hl_yaml -j 255".
 (score = 20)
2025-11-10 15:29.45: >>> 
# Error: This pattern matches values of type [? `Tuple of 'a ]
 (score = 48)
2025-11-10 15:29.45: >>> 
# Error: This pattern matches values of type [? `Tuple of 'a ]
 (score = 48)
2025-11-10 15:29.45: >>> 
# Error: This pattern matches values of type [? `Tuple of 'a ]
 (score = 48)
2025-11-10 15:29.45: This pattern matches values of type [? `Tuple of 'a ]