(for PR #29582)

2026-03-25 13:14.46: New job: test grace.0.1.0 with ocaml-compiler.5.4.0, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29582/head (fa5fb3a6a806e832e4c7791145889a6bbe8b64ef)
                              on debian-13-ocaml-5.4/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29582/head" && git reset --hard fa5fb3a6
git fetch origin master
git merge --no-edit 2f93e9d4614d6376ed929fc2cee7c59cb9d5833b
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.4@sha256:bd342cbd7766c453282fdafbc2e565ae3361320ec344722cf4372b782e4a97f6
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn ocaml-compiler.5.4.0 5.4.0
RUN opam reinstall --update-invariant ocaml-compiler.5.4.0; \
    res=$?; \
    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 "$pkg" != 'ocaml-compiler.5.4.0' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN opam reinstall grace.0.1.0; \
    res=$?; \
    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 "$pkg" != 'grace.0.1.0' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN (opam reinstall --with-test grace.0.1.0) || true
RUN opam reinstall --with-test --verbose grace.0.1.0; \
    res=$?; \
    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 "$pkg" != 'grace.0.1.0' && partial_fails="$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 .

2026-03-25 13:14.46: Using cache hint "ocaml/opam:debian-13-ocaml-5.4@sha256:bd342cbd7766c453282fdafbc2e565ae3361320ec344722cf4372b782e4a97f6-ocaml-compiler.5.4.0-grace.0.1.0-fa5fb3a6a806e832e4c7791145889a6bbe8b64ef"
2026-03-25 13:14.46: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.4@sha256:bd342cbd7766c453282fdafbc2e565ae3361320ec344722cf4372b782e4a97f6)
 (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-compiler.5.4.0 5.4.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall --update-invariant ocaml-compiler.5.4.0;\
             \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 \"$pkg\" != 'ocaml-compiler.5.4.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall grace.0.1.0;\
             \n        res=$?;\
             \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 \"$pkg\" != 'grace.0.1.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (network host)
      (shell "(opam reinstall --with-test grace.0.1.0) || true"))
 (run (shell  "opam reinstall --with-test --verbose grace.0.1.0;\
             \n        res=$?;\
             \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 \"$pkg\" != 'grace.0.1.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-03-25 13:14.46: Waiting for resource in pool OCluster
2026-03-25 19:09.31: Waiting for worker…
2026-03-25 19:12.12: Got resource from pool OCluster
Building on phoebe.caelum.ci.dev
All commits already cached
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HEAD is now at 2f93e9d461 Merge pull request #29592 from dinosaure/release-miou-v0.5.5
Merge made by the 'ort' strategy.
 packages/ocaml-compiler/ocaml-compiler.5.3.0/opam      |  5 ++++-
 packages/ocaml-compiler/ocaml-compiler.5.3/opam        |  5 ++++-
 packages/ocaml-compiler/ocaml-compiler.5.4.0/opam      |  5 ++++-
 .../ocaml-compiler/ocaml-compiler.5.4.0~alpha1/opam    |  5 ++++-
 .../ocaml-compiler/ocaml-compiler.5.4.0~beta1/opam     |  5 ++++-
 .../ocaml-compiler/ocaml-compiler.5.4.0~beta2/opam     |  5 ++++-
 packages/ocaml-compiler/ocaml-compiler.5.4.0~rc1/opam  |  5 ++++-
 packages/ocaml-compiler/ocaml-compiler.5.4.1/opam      |  5 ++++-
 packages/ocaml-compiler/ocaml-compiler.5.4/opam        |  5 ++++-
 .../ocaml-compiler/ocaml-compiler.5.5.0~alpha1/opam    |  5 ++++-
 packages/ocaml-compiler/ocaml-compiler.5.5/opam        |  5 ++++-
 packages/ocaml-compiler/ocaml-compiler.5.6/opam        |  5 ++++-
 packages/ocaml-option-llvm/ocaml-option-llvm.1/opam    | 18 ++++++++++++++++++
 .../ocaml-options-vanilla/ocaml-options-vanilla.1/opam |  1 +
 packages/ocaml-variants/ocaml-variants.5.2.0+msvc/opam |  2 ++
 15 files changed, 69 insertions(+), 12 deletions(-)
 create mode 100644 packages/ocaml-option-llvm/ocaml-option-llvm.1/opam

(from ocaml/opam:debian-13-ocaml-5.4@sha256:bd342cbd7766c453282fdafbc2e565ae3361320ec344722cf4372b782e4a97f6)
Unable to find image 'ocaml/opam:debian-13-ocaml-5.4@sha256:bd342cbd7766c453282fdafbc2e565ae3361320ec344722cf4372b782e4a97f6' locally
docker.io/ocaml/opam@sha256:bd342cbd7766c453282fdafbc2e565ae3361320ec344722cf4372b782e4a97f6: Pulling from ocaml/opam
866771c43bf5: Already exists
1e49bea09367: Already exists
e793768537e6: Already exists
ed323d3d481a: Already exists
7df34a5cd5f1: Already exists
fd712d3eb935: Already exists
4b9fb8c99118: Already exists
9d9a01948b94: Already exists
0f1514f90b32: Already exists
e1ec5a753447: Already exists
03cc323e2f71: Already exists
c09c08ea9749: Already exists
b36b619f8e6b: Already exists
195344ca5274: Already exists
228ee78582a6: Already exists
504bde1c25b3: Already exists
9d8b1356c89f: Already exists
9d8b1356c89f: Already exists
568fb6dda155: Already exists
c499c9198aea: Already exists
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Digest: sha256:bd342cbd7766c453282fdafbc2e565ae3361320ec344722cf4372b782e4a97f6
Status: Downloaded newer image for ocaml/opam@sha256:bd342cbd7766c453282fdafbc2e565ae3361320ec344722cf4372b782e4a97f6
2026-03-25 19:12.23 ---> using "41eea30e3f639c18d8cf57c309ec76919ec7b2398036f7e41744cbce59a133d3" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-03-25 19:12.23 ---> using "4ad7f430d684c40cedc651267e0edf890c044fe4e624255de377c471b4526bac" 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
2026-03-25 19:12.23 ---> using "71fa58e52457bf6a7eac317c6a6ef1e2bdf53e533a1e4fd04b90c9349347e038" 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
# 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                 71
# 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
2026-03-25 19:12.23 ---> using "ed86081cb38ca125a920162bfe6a4bb7b1c27c6973c917551687c83cf44dbfdf" 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/"))
2026-03-25 19:12.23 ---> using "04a48515eea40c32b96da0c71328b4bba0edb66eed83d4f78554b39097cf1f25" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-03-25 19:12.24 ---> using "034191995d824300f355cbba1072d6e5fe6d815701f24eb84d82c75009d73829" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-03-25 19:12.24 ---> using "8232259ea36ea8848dc29ae49703acf145fd27b40f3ebd8fb785db7f8da1b9d4" from cache

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Get:1 http://deb.debian.org/debian trixie InRelease [140 kB]
- 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]
- Get:4 http://deb.debian.org/debian trixie/main amd64 Packages [9671 kB]
- Get:5 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [114 kB]
- Fetched 10.0 MB in 2s (4723 kB/s)
- Reading package lists...
- 
2026-03-25 19:12.24 ---> using "a75782a571df4fc8f8933e94c681af881015ee87cdd4c652f8ae9af1d8cfad37" from cache

/home/opam: (run (shell "opam pin add -k version -yn ocaml-compiler.5.4.0 5.4.0"))
ocaml-compiler is now pinned to version 5.4.0
2026-03-25 19:12.24 ---> using "60e129f7398974b5fa5afc8f56ec09bd24a9182f5e9834464bfc959db1aa6b14" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall --update-invariant ocaml-compiler.5.4.0;\
                        \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 \"$pkg\" != 'ocaml-compiler.5.4.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
The following actions will be performed:
=== recompile 8 packages
  - recompile base-domains        base           [uses ocaml]
  - recompile base-effects        base           [uses ocaml]
  - recompile base-nnp            base           [uses base-domains]
  - recompile ocaml               5.4.0          [uses ocaml-base-compiler]
  - recompile ocaml-base-compiler 5.4.0 (pinned) [uses ocaml-compiler]
  - recompile ocaml-compiler      5.4.0 (pinned)
  - recompile ocaml-config        3              [uses ocaml-base-compiler]
  - recompile opam-depext         1.2.3          [uses ocaml]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved ocaml-compiler.5.4.0  (cached)
-> retrieved ocaml-config.3  (cached)
-> retrieved opam-depext.1.2.3  (cached)
-> removed   base-effects.base
-> removed   base-nnp.base
-> removed   base-domains.base
-> removed   opam-depext.1.2.3
-> removed   ocaml.5.4.0
-> removed   ocaml-config.3
-> removed   ocaml-base-compiler.5.4.0
-> removed   ocaml-compiler.5.4.0
-> installed ocaml-compiler.5.4.0
-> installed ocaml-base-compiler.5.4.0
-> installed ocaml-config.3
-> installed ocaml.5.4.0
-> installed base-domains.base
-> installed base-effects.base
-> installed base-nnp.base
-> installed opam-depext.1.2.3
Done.

<><> opam-depext.1.2.3 installed successfully <><><><><><><><><><><><><><><><><>
=> opam-depext is unnecessary when used with opam >= 2.1. Please use opam install directly instead
# To update the current shell environment, run: eval $(opam env)
2026-03-25 19:12.24 ---> using "efbc92fc0c607605c8bb33f9e4c8fe340a48c67e14d2f61592db8a4edc5c0b15" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall grace.0.1.0;\
                        \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 \"$pkg\" != 'grace.0.1.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
grace.0.1.0 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 79 packages
  - install base                        v0.17.3   [required by core, dedent]
  - install base_bigstring              v0.17.0   [required by core]
  - install base_quickcheck             v0.17.1   [required by core]
  - install bin_prot                    v0.17.0-1 [required by core]
  - install capitalization              v0.17.0   [required by ppx_string_conv]
  - install core                        v0.17.1   [required by grace]
  - install core_kernel                 v0.17.0   [required by core_unix]
  - install core_unix                   v0.17.1   [required by grace]
  - install csexp                       1.5.2     [required by dune-configurator]
  - install dedent                      v0.17.0   [required by grace]
  - install dune                        3.22.0    [required by grace]
  - install dune-configurator           3.22.0    [required by base]
  - install expect_test_helpers_core    v0.17.0   [required by core_unix]
  - install fieldslib                   v0.17.0   [required by core]
  - install fmt                         0.11.0    [required by grace]
  - install gel                         v0.17.0   [required by ppx_diff]
  - install grace                       0.1.0
  - install int_repr                    v0.17.0   [required by base_bigstring, core_kernel]
  - install iter                        1.9       [required by grace]
  - install jane-street-headers         v0.17.0   [required by core, core_unix]
  - install jst-config                  v0.17.0   [required by core, core_unix]
  - install num                         1.6       [required by sexplib]
  - install ocaml-compiler-libs         v0.17.0   [required by ppxlib]
  - install ocaml_intrinsics_kernel     v0.17.1   [required by base]
  - install ocamlbuild                  0.16.1    [required by fmt]
  - install ocamlfind                   1.9.8     [required by fmt]
  - install parsexp                     v0.17.0   [required by sexplib]
  - install ppx_assert                  v0.17.0   [required by core]
  - install ppx_base                    v0.17.0   [required by core]
  - install ppx_bench                   v0.17.1   [required by ppx_jane]
  - install ppx_bin_prot                v0.17.1   [required by ppx_jane]
  - install ppx_cold                    v0.17.0   [required by ppx_base]
  - install ppx_compare                 v0.17.0   [required by ppx_diff]
  - install ppx_custom_printf           v0.17.0   [required by ppx_jane]
  - install ppx_derivers                1.2.1     [required by ppxlib]
  - install ppx_diff                    v0.17.1   [required by core]
  - install ppx_disable_unused_warnings v0.17.0   [required by ppx_jane]
  - install ppx_enumerate               v0.17.0   [required by ppx_diff]
  - install ppx_expect                  v0.17.3   [required by ppx_jane]
  - install ppx_fields_conv             v0.17.0   [required by ppx_jane]
  - install ppx_fixed_literal           v0.17.0   [required by ppx_jane]
  - install ppx_globalize               v0.17.2   [required by ppx_base]
  - install ppx_hash                    v0.17.0   [required by core]
  - install ppx_here                    v0.17.0   [required by ppx_jane]
  - install ppx_ignore_instrumentation  v0.17.0   [required by ppx_jane]
  - install ppx_inline_test             v0.17.1   [required by core]
  - install ppx_jane                    v0.17.0   [required by grace]
  - install ppx_let                     v0.17.1   [required by ppx_jane]
  - install ppx_log                     v0.17.0   [required by ppx_jane]
  - install ppx_module_timer            v0.17.0   [required by ppx_jane]
  - install ppx_optcomp                 v0.17.1   [required by core, core_unix]
  - install ppx_optional                v0.17.0   [required by ppx_jane]
  - install ppx_pipebang                v0.17.0   [required by ppx_jane]
  - install ppx_sexp_conv               v0.17.1   [required by core]
  - install ppx_sexp_message            v0.17.0   [required by core]
  - install ppx_sexp_value              v0.17.0   [required by ppx_jane]
  - install ppx_stable                  v0.17.1   [required by ppx_jane]
  - install ppx_stable_witness          v0.17.0   [required by ppx_jane]
  - install ppx_string                  v0.17.0   [required by ppx_jane]
  - install ppx_string_conv             v0.17.0   [required by ppx_jane]
  - install ppx_tydi                    v0.17.1   [required by ppx_jane]
  - install ppx_typerep_conv            v0.17.1   [required by ppx_jane]
  - install ppx_variants_conv           v0.17.1   [required by ppx_jane]
  - install ppxlib                      0.37.0    [required by ppx_diff]
  - install ppxlib_jane                 v0.17.4   [required by ppx_diff]
  - install re                          1.14.0    [required by expect_test_helpers_core]
  - install sexp_pretty                 v0.17.0   [required by expect_test_helpers_core]
  - install sexplib                     v0.17.0   [required by core, core_unix]
  - install sexplib0                    v0.17.0   [required by base]
  - install spawn                       v0.17.0   [required by core_unix]
  - install splittable_random           v0.17.0   [required by core]
  - install stdio                       v0.17.0   [required by core, dedent]
  - install stdlib-shims                0.3.0     [required by ppxlib]
  - install time_now                    v0.17.0   [required by core]
  - install timezone                    v0.17.0   [required by core_unix]
  - install topkg                       1.1.1     [required by fmt]
  - install typerep                     v0.17.1   [required by core]
  - install uopt                        v0.17.0   [required by core_unix]
  - install variantslib                 v0.17.0   [required by core]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved base.v0.17.3  (cached)
-> retrieved base_bigstring.v0.17.0  (cached)
-> retrieved base_quickcheck.v0.17.1  (cached)
-> retrieved bin_prot.v0.17.0-1  (cached)
-> retrieved capitalization.v0.17.0  (cached)
-> retrieved core.v0.17.1  (cached)
-> retrieved core_kernel.v0.17.0  (cached)
-> retrieved core_unix.v0.17.1  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved dedent.v0.17.0  (cached)
-> retrieved dune.3.22.0, dune-configurator.3.22.0  (cached)
-> retrieved expect_test_helpers_core.v0.17.0  (cached)
-> retrieved fieldslib.v0.17.0  (cached)
-> retrieved fmt.0.11.0  (cached)
-> retrieved gel.v0.17.0  (cached)
-> retrieved grace.0.1.0  (https://opam.ocaml.org/cache)
-> retrieved int_repr.v0.17.0  (cached)
-> retrieved iter.1.9  (cached)
-> retrieved jane-street-headers.v0.17.0  (cached)
-> retrieved jst-config.v0.17.0  (cached)
-> retrieved num.1.6  (cached)
-> retrieved ocaml-compiler-libs.v0.17.0  (cached)
-> retrieved ocaml_intrinsics_kernel.v0.17.1  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved parsexp.v0.17.0  (cached)
-> retrieved ppx_assert.v0.17.0  (cached)
-> retrieved ppx_base.v0.17.0  (cached)
-> retrieved ppx_bench.v0.17.1  (cached)
-> retrieved ppx_bin_prot.v0.17.1  (cached)
-> retrieved ppx_cold.v0.17.0  (cached)
-> retrieved ppx_compare.v0.17.0  (cached)
-> retrieved ppx_custom_printf.v0.17.0  (cached)
-> retrieved ppx_derivers.1.2.1  (cached)
-> retrieved ppx_diff.v0.17.1  (cached)
-> retrieved ppx_disable_unused_warnings.v0.17.0  (cached)
-> retrieved ppx_enumerate.v0.17.0  (cached)
-> retrieved ppx_expect.v0.17.3  (cached)
-> retrieved ppx_fields_conv.v0.17.0  (cached)
-> retrieved ppx_fixed_literal.v0.17.0  (cached)
-> retrieved ppx_globalize.v0.17.2  (cached)
-> retrieved ppx_hash.v0.17.0  (cached)
-> retrieved ppx_here.v0.17.0  (cached)
-> retrieved ppx_ignore_instrumentation.v0.17.0  (cached)
-> retrieved ppx_inline_test.v0.17.1  (cached)
-> retrieved ppx_jane.v0.17.0  (cached)
-> retrieved ppx_let.v0.17.1  (cached)
-> retrieved ppx_log.v0.17.0  (cached)
-> retrieved ppx_module_timer.v0.17.0  (cached)
-> retrieved ppx_optcomp.v0.17.1  (cached)
-> retrieved ppx_optional.v0.17.0  (cached)
-> retrieved ppx_pipebang.v0.17.0  (cached)
-> retrieved ppx_sexp_conv.v0.17.1  (cached)
-> retrieved ppx_sexp_message.v0.17.0  (cached)
-> retrieved ppx_sexp_value.v0.17.0  (cached)
-> retrieved ppx_stable.v0.17.1  (cached)
-> retrieved ppx_stable_witness.v0.17.0  (cached)
-> retrieved ppx_string.v0.17.0  (cached)
-> retrieved ppx_string_conv.v0.17.0  (cached)
-> retrieved ppx_tydi.v0.17.1  (cached)
-> retrieved ppx_typerep_conv.v0.17.1  (cached)
-> retrieved ppx_variants_conv.v0.17.1  (cached)
-> retrieved ppxlib.0.37.0  (cached)
-> retrieved ppxlib_jane.v0.17.4  (cached)
-> retrieved re.1.14.0  (cached)
-> retrieved sexp_pretty.v0.17.0  (cached)
-> retrieved sexplib.v0.17.0  (cached)
-> retrieved sexplib0.v0.17.0  (cached)
-> retrieved spawn.v0.17.0  (cached)
-> retrieved splittable_random.v0.17.0  (cached)
-> retrieved stdio.v0.17.0  (cached)
-> retrieved stdlib-shims.0.3.0  (cached)
-> retrieved time_now.v0.17.0  (cached)
-> retrieved timezone.v0.17.0  (cached)
-> retrieved topkg.1.1.1  (cached)
-> retrieved typerep.v0.17.1  (cached)
-> retrieved uopt.v0.17.0  (cached)
-> retrieved variantslib.v0.17.0  (cached)
-> installed num.1.6
-> installed ocamlfind.1.9.8
-> installed ocamlbuild.0.16.1
-> installed topkg.1.1.1
-> installed fmt.0.11.0
-> installed dune.3.22.0
-> installed ppx_derivers.1.2.1
-> installed jane-street-headers.v0.17.0
-> installed csexp.1.5.2
-> installed iter.1.9
-> installed ocaml-compiler-libs.v0.17.0
-> installed ocaml_intrinsics_kernel.v0.17.1
-> installed re.1.14.0
-> installed sexplib0.v0.17.0
-> installed spawn.v0.17.0
-> installed stdlib-shims.0.3.0
-> installed dune-configurator.3.22.0
-> installed parsexp.v0.17.0
-> installed sexplib.v0.17.0
-> installed base.v0.17.3
-> installed variantslib.v0.17.0
-> installed fieldslib.v0.17.0
-> installed stdio.v0.17.0
-> installed typerep.v0.17.1
-> installed ppxlib.0.37.0
-> installed ppxlib_jane.v0.17.4
-> installed ppx_optcomp.v0.17.1
-> installed ppx_tydi.v0.17.1
-> installed ppx_cold.v0.17.0
-> installed ppx_disable_unused_warnings.v0.17.0
-> installed ppx_here.v0.17.0
-> installed ppx_typerep_conv.v0.17.1
-> installed ppx_stable_witness.v0.17.0
-> installed ppx_variants_conv.v0.17.1
-> installed ppx_ignore_instrumentation.v0.17.0
-> installed ppx_fields_conv.v0.17.0
-> installed ppx_stable.v0.17.1
-> installed ppx_pipebang.v0.17.0
-> installed ppx_enumerate.v0.17.0
-> installed ppx_globalize.v0.17.2
-> installed ppx_compare.v0.17.0
-> installed ppx_fixed_literal.v0.17.0
-> installed ppx_optional.v0.17.0
-> installed ppx_let.v0.17.1
-> installed ppx_sexp_conv.v0.17.1
-> installed ppx_assert.v0.17.0
-> installed ppx_hash.v0.17.0
-> installed ppx_sexp_value.v0.17.0
-> installed ppx_sexp_message.v0.17.0
-> installed ppx_custom_printf.v0.17.0
-> installed ppx_base.v0.17.0
-> installed jst-config.v0.17.0
-> installed capitalization.v0.17.0
-> installed bin_prot.v0.17.0-1
-> installed sexp_pretty.v0.17.0
-> installed time_now.v0.17.0
-> installed ppx_string.v0.17.0
-> installed ppx_bin_prot.v0.17.1
-> installed ppx_module_timer.v0.17.0
-> installed ppx_inline_test.v0.17.1
-> installed ppx_string_conv.v0.17.0
-> installed ppx_bench.v0.17.1
-> installed ppx_expect.v0.17.3
-> installed splittable_random.v0.17.0
-> installed ppx_log.v0.17.0
-> installed base_quickcheck.v0.17.1
-> installed ppx_jane.v0.17.0
-> installed gel.v0.17.0
-> installed dedent.v0.17.0
-> installed uopt.v0.17.0
-> installed int_repr.v0.17.0
-> installed base_bigstring.v0.17.0
-> installed ppx_diff.v0.17.1
-> installed core.v0.17.1
-> installed expect_test_helpers_core.v0.17.0
-> installed timezone.v0.17.0
-> installed core_kernel.v0.17.0
-> installed core_unix.v0.17.1
-> installed grace.0.1.0
Done.
# To update the current shell environment, run: eval $(opam env)
2026-03-25 19:21.47 ---> saved as "5be738bdaa5b5b26a6321669099d423481759e8ae9b7f8bb49ba2f52544c9dea"

/home/opam: (run (network host)
                 (shell "(opam reinstall --with-test grace.0.1.0) || true"))
The following actions will be performed:
=== recompile 1 package
  - recompile grace 0.1.0

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved grace.0.1.0  (https://opam.ocaml.org/cache)
[ERROR] The compilation of grace.0.1.0 failed at "dune build -p grace -j 71 @install @runtest".

#=== ERROR while compiling grace.0.1.0 ========================================#
# context              2.5.0 | linux/x86_64 | ocaml-base-compiler.5.4.0 | file:///home/opam/opam-repository
# path                 ~/.opam/5.4/.opam-switch/build/grace.0.1.0
# command              ~/.opam/opam-init/hooks/sandbox.sh build dune build -p grace -j 71 @install @runtest
# exit-code            1
# env-file             ~/.opam/log/grace-6-5ecac7.env
# output-file          ~/.opam/log/grace-6-5ecac7.out
### output ###
# File "test/rendering/test_rendering.ml", line 1, characters 0-0:
# /usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/rendering/test_rendering.ml _build/default/test/rendering/test_rendering.ml.corrected
# diff --git a/_build/default/test/rendering/test_rendering.ml b/_build/default/test/rendering/test_rendering.ml.corrected
# index 4203846..2a39aef 100644
# --- a/_build/default/test/rendering/test_rendering.ml
# +++ b/_build/default/test/rendering/test_rendering.ml.corrected
# @@ -30,16 +30,18 @@ let%expect_test "empty" =
#      List.map ~f:empty Severity.[ Help; Note; Warning; Error; Bug ]
#    in
#    pr_diagnostics diagnostics;
# -  [%expect {|
# -    help:
# -
# -    note:
# -
# -    warning:
# -
# -    error:
# -
# -    bug: |}]
# +  [%expect.unreachable]
# +[@@expect.uncaught_exn {|
# +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
# +     This is strongly discouraged as backtraces are fragile.
# +     Please change this test to not include a backtrace. *)
# +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
# +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
# +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
# +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
# +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 32, characters 2-28
# +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
# +  |}]
#  ;;
#  
#  let%expect_test "same_line" =
# @@ -77,18 +79,18 @@ let%expect_test "same_line" =
#      ]
#    in
#    pr_diagnostics diagnostics;
# -  [%expect
# -    {|
# -    error: cannot borrow `v` as mutable more than once at a time
# -        ┌─ one_line.rs:3:12
# -      3 │      v.push(v.pop().unwrap());
# -        │      - ---- ^ second mutable borrow occurs here
# -        │      │ │
# -        │      │ first mutable borrow occurs here
# -        │      first borrow later used by call
# -
# -    error: aborting due to previous error
# -        = For more information about this error, try `rustc --explain` |}]
# +  [%expect.unreachable]
# +[@@expect.uncaught_exn {|
# +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
# +     This is strongly discouraged as backtraces are fragile.
# +     Please change this test to not include a backtrace. *)
# +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
# +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
# +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
# +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
# +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 79, characters 2-28
# +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
# +  |}]
#  ;;
#  
#  let%expect_test "overlapping" =
# @@ -230,55 +232,18 @@ let%expect_test "overlapping" =
#        ]
#    in
#    pr_diagnostics diagnostics;
# -  [%expect
# -    {|
# -    error: nested `impl Trait` is not allowed
# -        ┌─ nested_impl_trait.rs:5:56
# -      5 │  fn bad_in_ret_position(x: impl Into<u32>) -> impl Into<impl Debug> { x }
# -        │                                               ----------^^^^^^^^^^-
# -        │                                               │         │
# -        │                                               │         nested `impl Trait` here
# -        │                                               outer `impl Trait`
# -
# -    error: the type placeholder `_` is not allowed within types on item signatures
# -        ┌─ typeck_type_placeholder_item.rs:1:18
# -      1 │  fn fn_test1() -> _ { 5 }
# -        │                   ^
# -        │                   │
# -        │                   not allowed in type signatures
# -        │                   help: replace with the correct return type: `i32`
# -
# -    error: the type placeholder `_` is not allowed within types on item signatures
# -        ┌─ typeck_type_placeholder_item.rs:2:28
# -      2 │  fn fn_test2(x: i32) -> (_, _) { (x, x) }
# -        │                         -^--^-
# -        │                         ││  │
# -        │                         ││  not allowed in type signatures
# -        │                         │not allowed in type signatures
# -        │                         help: replace with the correct return type: `(i32, i32)`
# -
# -    error: `std::rc::Rc<()>` cannot be sent between threads safely
# -        ┌─ libstd/thread/mod.rs:5:8
# -      5 │        F: Send + 'static,
# -        │           ---- required by this bound in `std::thread::spawn`
# -        ┌─ no_send_res_ports.rs:25:5
# -     24 │
# -     25 │        thread::spawn(move|| {
# -        │        ^^^^^^^^^^^^^ `std::rc::Rc<()> cannot be sent between threads safely`
# -        │ ╭────────────────────'
# -     26 │ │          let y = x;
# -     27 │ │          println!("{:?}", y);
# -     28 │ │      });
# -        │ ╰───────' within this `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`
# -     29 │    }
# -        = help: within `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<()>`
# -        = note: required because it appears within the type `Port<()>`
# -        = note: required because it appears within the type `main::Foo`
# -        = note: required because it appears within the type `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`
# -
# -    error: aborting due 5 previous errors
# -        = Some errors have detailed explanations: ...
# -        = For more information about an error, try `rustc --explain` |}]
# +  [%expect.unreachable]
# +[@@expect.uncaught_exn {|
# +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
# +     This is strongly discouraged as backtraces are fragile.
# +     Please change this test to not include a backtrace. *)
# +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
# +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
# +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
# +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
# +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 232, characters 2-28
# +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
# +  |}]
#  ;;
#  
#  let%expect_test "same ranges" =
# @@ -296,15 +261,18 @@ let%expect_test "same ranges" =
#        ]
#    in
#    pr_diagnostics diagnostics;
# -  [%expect
# -    {|
# -    error: unexpected token
# -        ┌─ same_range:1:5
# -      1 │  ::S { }
# -        │      ^
# -        │      │
# -        │      Unexpected '{'
# -        │      Expected '(' |}]
# +  [%expect.unreachable]
# +[@@expect.uncaught_exn {|
# +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
# +     This is strongly discouraged as backtraces are fragile.
# +     Please change this test to not include a backtrace. *)
# +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
# +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
# +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
# +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
# +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 298, characters 2-28
# +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
# +  |}]
#  ;;
#  
#  let%expect_test "multiline_overlapping" =
# @@ -352,22 +320,16 @@ let%expect_test "multiline_overlapping" =
#        ]
#    in
#    pr_diagnostics diagnostics;
# -  [%expect
# -    {|
# -    error: match arms have incompatible types
# -        ┌─ file.rs:4:34
# -      1 │ ╭────        match line_index.compare(self.last_line_index()) {
# -      2 │ │                Ordering::Less => Ok(self.line_starts()[line_index.to_usize()]),
# -        │ │                                  --------------------------------------------- this is found to be of type `Result<ByteIndex, LineIndexOutOfBoundsError>`
# -      3 │ │                Ordering::Equal => Ok(self.source_span().end()),
# -        │ │                                   ---------------------------- this is found to be of type `Result<ByteIndex, LineIndexOutOfBoundsError>`
# -      4 │ │                Ordering::Greater => LineIndexOutOfBoundsError {
# -        │ │ ╭───────────────────────────────────^
# -      5 │ │ │                  given: line_index,
# -      6 │ │ │                  max: self.last_line_index()
# -      7 │ │ │              },
# -        │ │ ╰──────────────^ expected enum `Result`, found struct `LineIndexOutOfBoundsError`
# -      8 │ │            }
# -        │ ╰────────────' `match` arms have incompatible types
# -        = expected `Result<ByteIndex, LineIndexOutOfBoundsError>`, found `LineIndexOutOfBoundsError` |}]
# +  [%expect.unreachable]
# +[@@expect.uncaught_exn {|
# +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
# +     This is strongly discouraged as backtraces are fragile.
# +     Please change this test to not include a backtrace. *)
# +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
# +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
# +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
# +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
# +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 354, characters 2-28
# +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
# +  |}]
#  ;;



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - build grace 0.1.0
+- 
- No changes have been performed
# To update the current shell environment, run: eval $(opam env)
2026-03-25 19:22.11 ---> saved as "86a0d9648660eca3ab1eae33adb5b4effc768e06cbb360b514842bd0009775c2"

/home/opam: (run (shell  "opam reinstall --with-test --verbose grace.0.1.0;\
                        \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 \"$pkg\" != 'grace.0.1.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
The following actions will be performed:
=== recompile 1 package
  - recompile grace 0.1.0

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Processing  1/4: [grace.0.1.0: extract]
-> retrieved grace.0.1.0  (cached)
Processing  2/4: [grace: dune build]
+ /home/opam/.opam/opam-init/hooks/sandbox.sh "build" "dune" "build" "-p" "grace" "-j" "71" "@install" "@runtest" (CWD=/home/opam/.opam/5.4/.opam-switch/build/grace.0.1.0)
[ERROR] The compilation of grace.0.1.0 failed at "dune build -p grace -j 71 @install @runtest".

#=== ERROR while compiling grace.0.1.0 ========================================#
# context              2.5.0 | linux/x86_64 | ocaml-base-compiler.5.4.0 | file:///home/opam/opam-repository
# path                 ~/.opam/5.4/.opam-switch/build/grace.0.1.0
# command              ~/.opam/opam-init/hooks/sandbox.sh build dune build -p grace -j 71 @install @runtest
# exit-code            1
# env-file             ~/.opam/log/grace-6-c907b2.env
# output-file          ~/.opam/log/grace-6-c907b2.out
### output ###
# File "test/rendering/test_rendering.ml", line 1, characters 0-0:
# /usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/rendering/test_rendering.ml _build/default/test/rendering/test_rendering.ml.corrected
# diff --git a/_build/default/test/rendering/test_rendering.ml b/_build/default/test/rendering/test_rendering.ml.corrected
# index 4203846..2a39aef 100644
# --- a/_build/default/test/rendering/test_rendering.ml
# +++ b/_build/default/test/rendering/test_rendering.ml.corrected
# @@ -30,16 +30,18 @@ let%expect_test "empty" =
#      List.map ~f:empty Severity.[ Help; Note; Warning; Error; Bug ]
#    in
#    pr_diagnostics diagnostics;
# -  [%expect {|
# -    help:
# -
# -    note:
# -
# -    warning:
# -
# -    error:
# -
# -    bug: |}]
# +  [%expect.unreachable]
# +[@@expect.uncaught_exn {|
# +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
# +     This is strongly discouraged as backtraces are fragile.
# +     Please change this test to not include a backtrace. *)
# +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
# +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
# +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
# +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
# +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 32, characters 2-28
# +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
# +  |}]
#  ;;
#  
#  let%expect_test "same_line" =
# @@ -77,18 +79,18 @@ let%expect_test "same_line" =
#      ]
#    in
#    pr_diagnostics diagnostics;
# -  [%expect
# -    {|
# -    error: cannot borrow `v` as mutable more than once at a time
# -        ┌─ one_line.rs:3:12
# -      3 │      v.push(v.pop().unwrap());
# -        │      - ---- ^ second mutable borrow occurs here
# -        │      │ │
# -        │      │ first mutable borrow occurs here
# -        │      first borrow later used by call
# -
# -    error: aborting due to previous error
# -        = For more information about this error, try `rustc --explain` |}]
# +  [%expect.unreachable]
# +[@@expect.uncaught_exn {|
# +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
# +     This is strongly discouraged as backtraces are fragile.
# +     Please change this test to not include a backtrace. *)
# +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
# +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
# +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
# +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
# +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 79, characters 2-28
# +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
# +  |}]
#  ;;
#  
#  let%expect_test "overlapping" =
# @@ -230,55 +232,18 @@ let%expect_test "overlapping" =
#        ]
#    in
#    pr_diagnostics diagnostics;
# -  [%expect
# -    {|
# -    error: nested `impl Trait` is not allowed
# -        ┌─ nested_impl_trait.rs:5:56
# -      5 │  fn bad_in_ret_position(x: impl Into<u32>) -> impl Into<impl Debug> { x }
# -        │                                               ----------^^^^^^^^^^-
# -        │                                               │         │
# -        │                                               │         nested `impl Trait` here
# -        │                                               outer `impl Trait`
# -
# -    error: the type placeholder `_` is not allowed within types on item signatures
# -        ┌─ typeck_type_placeholder_item.rs:1:18
# -      1 │  fn fn_test1() -> _ { 5 }
# -        │                   ^
# -        │                   │
# -        │                   not allowed in type signatures
# -        │                   help: replace with the correct return type: `i32`
# -
# -    error: the type placeholder `_` is not allowed within types on item signatures
# -        ┌─ typeck_type_placeholder_item.rs:2:28
# -      2 │  fn fn_test2(x: i32) -> (_, _) { (x, x) }
# -        │                         -^--^-
# -        │                         ││  │
# -        │                         ││  not allowed in type signatures
# -        │                         │not allowed in type signatures
# -        │                         help: replace with the correct return type: `(i32, i32)`
# -
# -    error: `std::rc::Rc<()>` cannot be sent between threads safely
# -        ┌─ libstd/thread/mod.rs:5:8
# -      5 │        F: Send + 'static,
# -        │           ---- required by this bound in `std::thread::spawn`
# -        ┌─ no_send_res_ports.rs:25:5
# -     24 │
# -     25 │        thread::spawn(move|| {
# -        │        ^^^^^^^^^^^^^ `std::rc::Rc<()> cannot be sent between threads safely`
# -        │ ╭────────────────────'
# -     26 │ │          let y = x;
# -     27 │ │          println!("{:?}", y);
# -     28 │ │      });
# -        │ ╰───────' within this `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`
# -     29 │    }
# -        = help: within `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<()>`
# -        = note: required because it appears within the type `Port<()>`
# -        = note: required because it appears within the type `main::Foo`
# -        = note: required because it appears within the type `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`
# -
# -    error: aborting due 5 previous errors
# -        = Some errors have detailed explanations: ...
# -        = For more information about an error, try `rustc --explain` |}]
# +  [%expect.unreachable]
# +[@@expect.uncaught_exn {|
# +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
# +     This is strongly discouraged as backtraces are fragile.
# +     Please change this test to not include a backtrace. *)
# +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
# +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
# +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
# +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
# +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 232, characters 2-28
# +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
# +  |}]
#  ;;
#  
#  let%expect_test "same ranges" =
# @@ -296,15 +261,18 @@ let%expect_test "same ranges" =
#        ]
#    in
#    pr_diagnostics diagnostics;
# -  [%expect
# -    {|
# -    error: unexpected token
# -        ┌─ same_range:1:5
# -      1 │  ::S { }
# -        │      ^
# -        │      │
# -        │      Unexpected '{'
# -        │      Expected '(' |}]
# +  [%expect.unreachable]
# +[@@expect.uncaught_exn {|
# +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
# +     This is strongly discouraged as backtraces are fragile.
# +     Please change this test to not include a backtrace. *)
# +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
# +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
# +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
# +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
# +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 298, characters 2-28
# +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
# +  |}]
#  ;;
#  
#  let%expect_test "multiline_overlapping" =
# @@ -352,22 +320,16 @@ let%expect_test "multiline_overlapping" =
#        ]
#    in
#    pr_diagnostics diagnostics;
# -  [%expect
# -    {|
# -    error: match arms have incompatible types
# -        ┌─ file.rs:4:34
# -      1 │ ╭────        match line_index.compare(self.last_line_index()) {
# -      2 │ │                Ordering::Less => Ok(self.line_starts()[line_index.to_usize()]),
# -        │ │                                  --------------------------------------------- this is found to be of type `Result<ByteIndex, LineIndexOutOfBoundsError>`
# -      3 │ │                Ordering::Equal => Ok(self.source_span().end()),
# -        │ │                                   ---------------------------- this is found to be of type `Result<ByteIndex, LineIndexOutOfBoundsError>`
# -      4 │ │                Ordering::Greater => LineIndexOutOfBoundsError {
# -        │ │ ╭───────────────────────────────────^
# -      5 │ │ │                  given: line_index,
# -      6 │ │ │                  max: self.last_line_index()
# -      7 │ │ │              },
# -        │ │ ╰──────────────^ expected enum `Result`, found struct `LineIndexOutOfBoundsError`
# -      8 │ │            }
# -        │ ╰────────────' `match` arms have incompatible types
# -        = expected `Result<ByteIndex, LineIndexOutOfBoundsError>`, found `LineIndexOutOfBoundsError` |}]
# +  [%expect.unreachable]
# +[@@expect.uncaught_exn {|
# +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
# +     This is strongly discouraged as backtraces are fragile.
# +     Please change this test to not include a backtrace. *)
# +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
# +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
# +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
# +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
# +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 354, characters 2-28
# +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
# +  |}]
#  ;;

- File "test/rendering/test_rendering.ml", line 1, characters 0-0:
- /usr/bin/git --no-pager diff --no-index --color=always -u _build/default/test/rendering/test_rendering.ml _build/default/test/rendering/test_rendering.ml.corrected
- diff --git a/_build/default/test/rendering/test_rendering.ml b/_build/default/test/rendering/test_rendering.ml.corrected
- index 4203846..2a39aef 100644
- --- a/_build/default/test/rendering/test_rendering.ml
- +++ b/_build/default/test/rendering/test_rendering.ml.corrected
- @@ -30,16 +30,18 @@ let%expect_test "empty" =
-      List.map ~f:empty Severity.[ Help; Note; Warning; Error; Bug ]
-    in
-    pr_diagnostics diagnostics;
- -  [%expect {|
- -    help:
- -
- -    note:
- -
- -    warning:
- -
- -    error:
- -
- -    bug: |}]
- +  [%expect.unreachable]
- +[@@expect.uncaught_exn {|
- +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
- +     This is strongly discouraged as backtraces are fragile.
- +     Please change this test to not include a backtrace. *)
- +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
- +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
- +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
- +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
- +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 32, characters 2-28
- +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
- +  |}]
-  ;;
-  
-  let%expect_test "same_line" =
- @@ -77,18 +79,18 @@ let%expect_test "same_line" =
-      ]
-    in
-    pr_diagnostics diagnostics;
- -  [%expect
- -    {|
- -    error: cannot borrow `v` as mutable more than once at a time
- -        ┌─ one_line.rs:3:12
- -      3 │      v.push(v.pop().unwrap());
- -        │      - ---- ^ second mutable borrow occurs here
- -        │      │ │
- -        │      │ first mutable borrow occurs here
- -        │      first borrow later used by call
- -
- -    error: aborting due to previous error
- -        = For more information about this error, try `rustc --explain` |}]
- +  [%expect.unreachable]
- +[@@expect.uncaught_exn {|
- +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
- +     This is strongly discouraged as backtraces are fragile.
- +     Please change this test to not include a backtrace. *)
- +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
- +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
- +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
- +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
- +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 79, characters 2-28
- +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
- +  |}]
-  ;;
-  
-  let%expect_test "overlapping" =
- @@ -230,55 +232,18 @@ let%expect_test "overlapping" =
-        ]
-    in
-    pr_diagnostics diagnostics;
- -  [%expect
- -    {|
- -    error: nested `impl Trait` is not allowed
- -        ┌─ nested_impl_trait.rs:5:56
- -      5 │  fn bad_in_ret_position(x: impl Into<u32>) -> impl Into<impl Debug> { x }
- -        │                                               ----------^^^^^^^^^^-
- -        │                                               │         │
- -        │                                               │         nested `impl Trait` here
- -        │                                               outer `impl Trait`
- -
- -    error: the type placeholder `_` is not allowed within types on item signatures
- -        ┌─ typeck_type_placeholder_item.rs:1:18
- -      1 │  fn fn_test1() -> _ { 5 }
- -        │                   ^
- -        │                   │
- -        │                   not allowed in type signatures
- -        │                   help: replace with the correct return type: `i32`
- -
- -    error: the type placeholder `_` is not allowed within types on item signatures
- -        ┌─ typeck_type_placeholder_item.rs:2:28
- -      2 │  fn fn_test2(x: i32) -> (_, _) { (x, x) }
- -        │                         -^--^-
- -        │                         ││  │
- -        │                         ││  not allowed in type signatures
- -        │                         │not allowed in type signatures
- -        │                         help: replace with the correct return type: `(i32, i32)`
- -
- -    error: `std::rc::Rc<()>` cannot be sent between threads safely
- -        ┌─ libstd/thread/mod.rs:5:8
- -      5 │        F: Send + 'static,
- -        │           ---- required by this bound in `std::thread::spawn`
- -        ┌─ no_send_res_ports.rs:25:5
- -     24 │
- -     25 │        thread::spawn(move|| {
- -        │        ^^^^^^^^^^^^^ `std::rc::Rc<()> cannot be sent between threads safely`
- -        │ ╭────────────────────'
- -     26 │ │          let y = x;
- -     27 │ │          println!("{:?}", y);
- -     28 │ │      });
- -        │ ╰───────' within this `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`
- -     29 │    }
- -        = help: within `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<()>`
- -        = note: required because it appears within the type `Port<()>`
- -        = note: required because it appears within the type `main::Foo`
- -        = note: required because it appears within the type `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`
- -
- -    error: aborting due 5 previous errors
- -        = Some errors have detailed explanations: ...
- -        = For more information about an error, try `rustc --explain` |}]
- +  [%expect.unreachable]
- +[@@expect.uncaught_exn {|
- +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
- +     This is strongly discouraged as backtraces are fragile.
- +     Please change this test to not include a backtrace. *)
- +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
- +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
- +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
- +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
- +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 232, characters 2-28
- +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
- +  |}]
-  ;;
-  
-  let%expect_test "same ranges" =
- @@ -296,15 +261,18 @@ let%expect_test "same ranges" =
-        ]
-    in
-    pr_diagnostics diagnostics;
- -  [%expect
- -    {|
- -    error: unexpected token
- -        ┌─ same_range:1:5
- -      1 │  ::S { }
- -        │      ^
- -        │      │
- -        │      Unexpected '{'
- -        │      Expected '(' |}]
- +  [%expect.unreachable]
- +[@@expect.uncaught_exn {|
- +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
- +     This is strongly discouraged as backtraces are fragile.
- +     Please change this test to not include a backtrace. *)
- +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
- +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
- +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
- +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
- +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 298, characters 2-28
- +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
- +  |}]
-  ;;
-  
-  let%expect_test "multiline_overlapping" =
- @@ -352,22 +320,16 @@ let%expect_test "multiline_overlapping" =
-        ]
-    in
-    pr_diagnostics diagnostics;
- -  [%expect
- -    {|
- -    error: match arms have incompatible types
- -        ┌─ file.rs:4:34
- -      1 │ ╭────        match line_index.compare(self.last_line_index()) {
- -      2 │ │                Ordering::Less => Ok(self.line_starts()[line_index.to_usize()]),
- -        │ │                                  --------------------------------------------- this is found to be of type `Result<ByteIndex, LineIndexOutOfBoundsError>`
- -      3 │ │                Ordering::Equal => Ok(self.source_span().end()),
- -        │ │                                   ---------------------------- this is found to be of type `Result<ByteIndex, LineIndexOutOfBoundsError>`
- -      4 │ │                Ordering::Greater => LineIndexOutOfBoundsError {
- -        │ │ ╭───────────────────────────────────^
- -      5 │ │ │                  given: line_index,
- -      6 │ │ │                  max: self.last_line_index()
- -      7 │ │ │              },
- -        │ │ ╰──────────────^ expected enum `Result`, found struct `LineIndexOutOfBoundsError`
- -      8 │ │            }
- -        │ ╰────────────' `match` arms have incompatible types
- -        = expected `Result<ByteIndex, LineIndexOutOfBoundsError>`, found `LineIndexOutOfBoundsError` |}]
- +  [%expect.unreachable]
- +[@@expect.uncaught_exn {|
- +  (* CR expect_test_collector: This test expectation appears to contain a backtrace.
- +     This is strongly discouraged as backtraces are fragile.
- +     Please change this test to not include a backtrace. *)
- +  (Invalid_argument "Format.pp_set_geometry: margin >= pp_infinity")
- +  Raised at Stdlib__Format.pp_set_geometry in file "format.ml", line 878, characters 4-63
- +  Called from Grace_rendering__Ansi.pp_diagnostic in file "lib/rendering/ansi.ml", line 709, characters 2-64
- +  Called from Stdlib__List.iter in file "list.ml", line 114, characters 12-15
- +  Called from Test_rendering.(fun) in file "test/rendering/test_rendering.ml", line 354, characters 2-28
- +  Called from Ppx_expect_runtime__Test_block.Configured.dump_backtrace in file "runtime/test_block.ml", line 142, characters 10-28
- +  |}]
-  ;;


<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - build grace 0.1.0
+- 
- No changes have been performed
# To update the current shell environment, run: eval $(opam env)
'opam reinstall --with-test --verbose grace.0.1.0' failed.
[WARNING] OPAMCONFIRMLEVEL was ignored because CLI 2.0 was requested and it was introduced in 2.1.
[WARNING] OPAMCONFIRMLEVEL was ignored because CLI 2.0 was requested and it was introduced in 2.1.
"/usr/bin/env" "bash" "-c" "opam reinstall --with-test --verbose grace.0.1.0;
        res=$?;
        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 "$pkg" != 'grace.0.1.0' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 1
2026-03-25 19:22.50: Job failed: Failed: Build failed
2026-03-25 19:22.50: Log analysis:
2026-03-25 19:22.50: >>> 
[ERROR] The compilation of grace.0.1.0 failed at "dune build -p grace -j 71 @install @runtest".
 (score = 20)
2026-03-25 19:22.50: >>> 
[ERROR] The compilation of grace.0.1.0 failed at "dune build -p grace -j 71 @install @runtest".
 (score = 20)
2026-03-25 19:22.50: The compilation of grace.0.1.0 failed at "dune build -p grace -j 71 @install @runtest".