(for PR #29248)

2026-01-19 18:14.36: New job: build ambient-context.0.1.1, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29248/head (9d61e8a449aa2436cbd9b390c4afa6b47e8ed0ba)
                              on fedora-42-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29248/head" && git reset --hard 9d61e8a4
git fetch origin master
git merge --no-edit 39960ffbaf3e5b50a1e354d4c99bfecc01e358ca
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:fedora-42-ocaml-4.14@sha256:73149ade3c795b45a085e9d649fd5afe69729921b1240796d24a21a39b3867d6
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn ambient-context.0.1.1 0.1.1
RUN opam reinstall ambient-context.0.1.1; \
    res=$?; \
    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 "\"fedora-42\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'ambient-context.0.1.1' && partial_fails="$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 .

2026-01-19 18:14.36: Using cache hint "ocaml/opam:fedora-42-ocaml-4.14@sha256:73149ade3c795b45a085e9d649fd5afe69729921b1240796d24a21a39b3867d6-ambient-context.0.1.1-9d61e8a449aa2436cbd9b390c4afa6b47e8ed0ba"
2026-01-19 18:14.36: Using OBuilder spec:
((from ocaml/opam:fedora-42-ocaml-4.14@sha256:73149ade3c795b45a085e9d649fd5afe69729921b1240796d24a21a39b3867d6)
 (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 ambient-context.0.1.1 0.1.1"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall ambient-context.0.1.1;\
             \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 \"\\\"fedora-42\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'ambient-context.0.1.1' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-01-19 18:14.36: Waiting for resource in pool OCluster
2026-01-19 18:14.38: Waiting for worker…
2026-01-19 18:16.44: Got resource from pool OCluster
Building on laodoke.caelum.ci.dev
All commits already cached
HEAD is now at 39960ffbaf Merge pull request #29193 from recoules/release-binsec-0.11.0
Updating 39960ffbaf..9d61e8a449
Fast-forward
 .../ambient-context-eio.0.1.1/opam                 | 42 +++++++++++++++++++++
 .../ambient-context-lwt.0.1.1/opam                 | 42 +++++++++++++++++++++
 .../ambient-context/ambient-context.0.1.1/opam     | 43 ++++++++++++++++++++++
 3 files changed, 127 insertions(+)
 create mode 100644 packages/ambient-context-eio/ambient-context-eio.0.1.1/opam
 create mode 100644 packages/ambient-context-lwt/ambient-context-lwt.0.1.1/opam
 create mode 100644 packages/ambient-context/ambient-context.0.1.1/opam

(from ocaml/opam:fedora-42-ocaml-4.14@sha256:73149ade3c795b45a085e9d649fd5afe69729921b1240796d24a21a39b3867d6)
Unable to find image 'ocaml/opam:fedora-42-ocaml-4.14@sha256:73149ade3c795b45a085e9d649fd5afe69729921b1240796d24a21a39b3867d6' locally
docker.io/ocaml/opam@sha256:73149ade3c795b45a085e9d649fd5afe69729921b1240796d24a21a39b3867d6: Pulling from ocaml/opam
9bf6f242b112: Pulling fs layer
6072ec70b8c1: Pulling fs layer
24e8221ebeb2: Pulling fs layer
0fab8ed85905: Pulling fs layer
e6eeacedfea2: Pulling fs layer
9bf6f242b112: Waiting
5f1a7c92c990: Pulling fs layer
6072ec70b8c1: Waiting
0fab8ed85905: Waiting
e6eeacedfea2: Waiting
5f1a7c92c990: Waiting
24e8221ebeb2: Waiting
24e8221ebeb2: Verifying Checksum
24e8221ebeb2: Download complete
0fab8ed85905: Download complete
e6eeacedfea2: Verifying Checksum
e6eeacedfea2: Download complete
5f1a7c92c990: Download complete
6072ec70b8c1: Verifying Checksum
6072ec70b8c1: Download complete
9bf6f242b112: Verifying Checksum
9bf6f242b112: Download complete
9bf6f242b112: Pull complete
6072ec70b8c1: Pull complete
24e8221ebeb2: Pull complete
0fab8ed85905: Pull complete
e6eeacedfea2: Pull complete
5f1a7c92c990: Pull complete
Digest: sha256:73149ade3c795b45a085e9d649fd5afe69729921b1240796d24a21a39b3867d6
Status: Downloaded newer image for ocaml/opam@sha256:73149ade3c795b45a085e9d649fd5afe69729921b1240796d24a21a39b3867d6
2026-01-19 18:16.53 ---> using "4728459b6d35ca5add9f9e11ec365bc94e35be5b19740b040cb4afad1e104f2f" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-01-19 18:16.53 ---> using "04bd17086dccc7463642a3b30c3e9cd9168e6c065a3dd652cdfb4f46cb23a90b" 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 ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[ocaml-patches-overlay] synchronised from git+https://github.com/ocurrent/opam-repository#patches
[default] Initialised
2026-01-19 18:16.53 ---> using "110d86480bac155863bec5e6ae102f47e0cb997bfbc31821f5384802fdea2d8a" 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=fedora os-version=42
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 71
# repositories         2 (version-controlled)
# pinned               1 (version)
# current-switch       4.14
# invariant            ["ocaml-base-compiler" {= "4.14.2"}]
# compiler-packages    ocaml-base-compiler.4.14.2, ocaml-options-vanilla.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.14/lib/ocaml/stublibs:/home/opam/.opam/4.14/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.14.2
2026-01-19 18:16.53 ---> using "886df5c76b3cf68d91d068354e33b15339e423ac1aff49be86e036b3826d0a78" 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/"))
2026-01-19 18:16.53 ---> using "624268d699c211f618d57e01469548865490cc07f4754a5294d4d906308b4034" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-01-19 18:16.55 ---> saved as "6c04685e29af40a532ac3a058f7d40aceca3e48f585000c53b1b8009769b3897"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-01-19 18:17.18 ---> saved as "3246ab29d7021953e2e52b4c3fa31d40fd2d6336652a7308d3e592ed1cab0180"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/sbin/sudo "yum" "makecache"
- Updating and loading repositories:
-  Fedora 42 - x86_64 - Updates           100% |  39.3 KiB/s |  19.7 KiB |  00m01s
- Repositories loaded.
- Metadata cache created.
2026-01-19 18:17.24 ---> saved as "7488d6f57f5a504223e324ac0a6f7417147d79fccefbd9e3963a7cb0d55d481a"

/home/opam: (run (shell "opam pin add -k version -yn ambient-context.0.1.1 0.1.1"))
ambient-context is now pinned to version 0.1.1
2026-01-19 18:17.25 ---> saved as "fd4d53bb9ec03881f505d4a345a2695d81b2b84f197540ce4eb48770e56a1a64"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall ambient-context.0.1.1;\
                        \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 \"\\\"fedora-42\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'ambient-context.0.1.1' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
ambient-context.0.1.1 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 2 packages
  - install ambient-context 0.1.1 (pinned)
  - install dune            3.21.0         [required by ambient-context]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved ambient-context.0.1.1  (cached)
-> retrieved dune.3.21.0  (cached)
-> installed dune.3.21.0
-> installed ambient-context.0.1.1
Done.
# To update the current shell environment, run: eval $(opam env)
2026-01-19 18:18.02 ---> saved as "5a7ea36d8c4d341bf09ebe626c4349913f303c92813622d6298f61c728d25397"
Job succeeded
2026-01-19 18:18.11: Job succeeded