(for PR #29228)

2026-01-16 20:32.22: New job: build proven.0.9.0, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29228/head (a35dbc8a881d9411d03b2b822e4648d893342b2a)
                              on freebsd-14.3-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29228/head" && git reset --hard a35dbc8a
git fetch origin master
git merge --no-edit 92679ed61424ad5e3662cb5bba4effdd8f701363
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM freebsd-14.3-ocaml-4.14
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/local/bin/opam-dev /usr/local/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn proven.0.9.0 0.9.0
RUN opam reinstall proven.0.9.0; \
    res=$?; \
    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 "\"freebsd-14.3\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'proven.0.9.0' && partial_fails="$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 .

2026-01-16 20:32.22: Using cache hint "freebsd-14.3-ocaml-4.14-proven.0.9.0-a35dbc8a881d9411d03b2b822e4648d893342b2a"
2026-01-16 20:32.22: Using OBuilder spec:
((from freebsd-14.3-ocaml-4.14)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/local/bin/opam-dev /usr/local/bin/opam"))
 (run (network host)
      (shell "opam init --reinit -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 proven.0.9.0 0.9.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall proven.0.9.0;\
             \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 \"\\\"freebsd-14.3\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'proven.0.9.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-01-16 20:32.22: Waiting for resource in pool OCluster
2026-01-16 20:32.23: Waiting for worker…
2026-01-16 20:33.44: Got resource from pool OCluster
Building on rosemary
All commits already cached
Updating files: 100% (19220/19220), done.
HEAD is now at 92679ed614 Merge pull request #29220 from davesnx/release-server-reason-react-0.4.1
Updating 92679ed614..a35dbc8a88
Fast-forward
 packages/proven/proven.0.9.0/opam | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 packages/proven/proven.0.9.0/opam

(from freebsd-14.3-ocaml-4.14)
2026-01-16 20:45.41 ---> using "7e5247e9853d1c2fb95ef9ffdfdb895ef70516f48155f08a9b10db936cb8c6c6" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/local/bin/opam-dev /usr/local/bin/opam"))
2026-01-16 20:45.42 ---> saved as "96677dfb826139d1d475397206e27cf90befca1f152a356651021947800ddc31"

/home/opam: (run (network host)
                 (shell "opam init --reinit -ni"))
No configuration file found, using 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 2.1 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 1 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=1 --global
Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] no changes from git+file:///home/opam/opam-repository
2026-01-16 20:45.56 ---> saved as "b7155bb4d9f0dfa9c383663e6516f5803e4c2ab438da3ab4eeccd3740ad9833f"

/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=freebsd os-distribution=freebsd os-version=1403000
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 39
# repositories         1 (version-controlled)
# pinned               0
# current-switch       4.14.2
# invariant            ["ocaml-base-compiler" {= "4.14.2"} | "ocaml-system" {= "4.14.2"}]
# compiler-packages    ocaml-base-compiler.4.14.2, ocaml-options-vanilla.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.14.2/lib/ocaml/stublibs:/home/opam/.opam/4.14.2/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.14.2
2026-01-16 20:45.57 ---> saved as "b0effd5cf5c473eb9f84aee26e7221d934f437c21ca61c365f825913ca23d38c"

/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/"))
2026-01-16 20:46.00 ---> saved as "2a5689f2ff4b86af979d0390fa2dfee1e6e92b3f4e476fbe79b59c6ee634de82"

/home/opam: (copy (src .) (dst opam-repository/))
2026-01-16 20:46.08 ---> saved as "ac734199faf68b2448c50ad2b296d7224e0f0a18839bbadc2f46ae12b3d87a2b"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-01-16 20:46.22 ---> saved as "faf282ea073f6b6fc50bf41c0202bce13495df748bdceb11ab9ec43f581327a1"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
[WARNING] Unknown update command for bsd, skipping system update
2026-01-16 20:46.23 ---> saved as "aeea4e50a8ef405b409096335481f002f740e0291aee2df5f4a4b599f9a268ec"

/home/opam: (run (shell "opam pin add -k version -yn proven.0.9.0 0.9.0"))
proven is now pinned to version 0.9.0
2026-01-16 20:46.24 ---> saved as "28fc1bc3a9853714a513eb37f12cfbd46063a7b075f21f9494c884d1bc6c04fb"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall proven.0.9.0;\
                        \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 \"\\\"freebsd-14.3\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'proven.0.9.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))

<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>

proven.0.9.0 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 2 packages
  ∗ dune   3.21.0         [required by proven]
  ∗ proven 0.9.0 (pinned)

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
⬇ retrieved dune.3.21.0  (cached)
⬇ retrieved proven.0.9.0  (https://github.com/hyperpolymath/proven/archive/refs/tags/v0.9.0.tar.gz)
∗ installed dune.3.21.0
[ERROR] The compilation of proven.0.9.0 failed at "dune subst".

#=== ERROR while compiling proven.0.9.0 =======================================#
# context              2.5.0 | freebsd/x86_64 | ocaml-base-compiler.4.14.2 | pinned(https://github.com/hyperpolymath/proven/archive/refs/tags/v0.9.0.tar.gz)
# path                 ~/.opam/4.14.2/.opam-switch/build/proven.0.9.0
# command              ~/.opam/4.14.2/bin/dune subst
# exit-code            1
# env-file             ~/.opam/log/proven-16675-bab10a.env
# output-file          ~/.opam/log/proven-16675-bab10a.out
### output ###
# File "bindings/ocaml/dune-project", line 1, characters 0-35:
# 1 | ; SPDX-License-Identifier: PMPL-1.0
#     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# Error: Invalid first line, expected: (lang <lang> <version>)



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
┌─ The following actions failed
│ λ build proven 0.9.0
└─ 
┌─ The following changes have been performed
│ ∗ install dune 3.21.0
└─ 

The former state can be restored with:
    /usr/local/bin/opam switch import "/home/opam/.opam/4.14.2/.opam-switch/backup/state-20260116204625.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.
jail: /usr/bin/su -l opam -c cd '/home/opam' && env OPAM_REPO_CI='true' CI='true' OPAMPRECISETRACKING='1' OPAMERRLOGLEN='0' OPAMDOWNLOADJOBS='1' '/usr/bin/env' 'bash' '-c' 'opam reinstall proven.0.9.0;
        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 "\"freebsd-14.3\""; then
            echo "A package failed and has been disabled for CI using the '\''x-ci-accept-failures'\'' field.";
          fi;
          test "$pkg" != '\''proven.0.9.0'\'' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1': failed
"jail" "-c" "name=obuilder_56181_59216" "mount.fstab=/tmp/obuilder-jail-e6334b/fstab" "mount.devfs" "path=/obuilder/result/568d46fec7c53e48e4754b4254b3fc8df1e61e07b2a788c8c312749a84926bfd/rootfs" "host=inherit" "ip6=inherit" "ip4=inherit" "command=/usr/bin/su" "-l" "opam" "-c" "cd '/home/opam' && env OPAM_REPO_CI='true' CI='true' OPAMPRECISETRACKING='1' OPAMERRLOGLEN='0' OPAMDOWNLOADJOBS='1' '/usr/bin/env' 'bash' '-c' 'opam reinstall proven.0.9.0;
        res=$?;
        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 "\"freebsd-14.3\""; then
            echo "A package failed and has been disabled for CI using the '\''x-ci-accept-failures'\'' field.";
          fi;
          test "$pkg" != '\''proven.0.9.0'\'' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1'" failed with exit status 1
2026-01-16 20:50.48: Job failed: Failed: Build failed
2026-01-16 20:50.48: Log analysis:
2026-01-16 20:50.48: >>> 
[ERROR] The compilation of proven.0.9.0 failed at "dune subst".
 (score = 20)
2026-01-16 20:50.48: >>> 
# Error: Invalid first line, expected: (lang <lang> <version>)
 (score = 48)
2026-01-16 20:50.48: Invalid first line, expected: (lang <lang> <version>)