(for PR #29248)

2026-01-19 18:14.36: New job: build ambient-context-lwt.0.1.1, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29248/head (9d61e8a449aa2436cbd9b390c4afa6b47e8ed0ba)
                              on debian-12-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29248/head" && git reset --hard 9d61e8a4
git fetch origin master
git merge --no-edit 39960ffbaf3e5b50a1e354d4c99bfecc01e358ca
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-4.14@sha256:270c70aead05ae957cad38e373d0c96b96d3279a6fdcf0ab5c44d04b1aed141f
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn ambient-context-lwt.0.1.1 0.1.1
RUN opam reinstall ambient-context-lwt.0.1.1; \
    res=$?; \
    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 "\"debian-12\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'ambient-context-lwt.0.1.1' && partial_fails="$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:debian-12-ocaml-4.14@sha256:270c70aead05ae957cad38e373d0c96b96d3279a6fdcf0ab5c44d04b1aed141f-ambient-context-lwt.0.1.1-9d61e8a449aa2436cbd9b390c4afa6b47e8ed0ba"
2026-01-19 18:14.36: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-4.14@sha256:270c70aead05ae957cad38e373d0c96b96d3279a6fdcf0ab5c44d04b1aed141f)
 (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-lwt.0.1.1 0.1.1"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall ambient-context-lwt.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 \"\\\"debian-12\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'ambient-context-lwt.0.1.1' && partial_fails=\"$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 18:16.54: 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:debian-12-ocaml-4.14@sha256:270c70aead05ae957cad38e373d0c96b96d3279a6fdcf0ab5c44d04b1aed141f)
Unable to find image 'ocaml/opam:debian-12-ocaml-4.14@sha256:270c70aead05ae957cad38e373d0c96b96d3279a6fdcf0ab5c44d04b1aed141f' locally
docker.io/ocaml/opam@sha256:270c70aead05ae957cad38e373d0c96b96d3279a6fdcf0ab5c44d04b1aed141f: Pulling from ocaml/opam
588979898ac6: Pulling fs layer
39e66356a835: Pulling fs layer
26ee7e6876c8: Pulling fs layer
08af75fd73b2: Pulling fs layer
39e66356a835: Waiting
ce78ed96cb04: Pulling fs layer
26ee7e6876c8: Waiting
588979898ac6: Waiting
08af75fd73b2: Waiting
ce78ed96cb04: Waiting
39e66356a835: Verifying Checksum
39e66356a835: Download complete
26ee7e6876c8: Verifying Checksum
26ee7e6876c8: Download complete
08af75fd73b2: Download complete
ce78ed96cb04: Download complete
588979898ac6: Verifying Checksum
588979898ac6: Download complete
588979898ac6: Pull complete
39e66356a835: Pull complete
26ee7e6876c8: Pull complete
08af75fd73b2: Pull complete
ce78ed96cb04: Pull complete
Digest: sha256:270c70aead05ae957cad38e373d0c96b96d3279a6fdcf0ab5c44d04b1aed141f
Status: Downloaded newer image for ocaml/opam@sha256:270c70aead05ae957cad38e373d0c96b96d3279a6fdcf0ab5c44d04b1aed141f
2026-01-19 18:17.07 ---> using "d060c3e3d5f4e18e8be841854deb94987eb68ce545e0d46c79b463ba7be3791e" 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 18:17.07 ---> using "40762e73aaed610d6c4598960aa46cbbf888b00bf2b40505be30e7cc59764a78" 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
2026-01-19 18:17.07 ---> using "73419d8c0d1b716671f23194b6b102c130921a53bd557c8a0f99c78c096d05a5" 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=12
# 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       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 18:17.07 ---> using "343e7ac6c4241bb70358f4b0c35d0d456dfa39a730c5c19e61653aa7927af08f" 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 18:17.07 ---> using "390cfeddfcf646dc9205942e64566aa21b13d8a1f51bf7d874a2c86aaec0f75d" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-01-19 18:17.18 ---> saved as "2bbcc2ba9dabf7e0dfd8e58b131afdffce29ca5ac2c5ac80c1037428e1bd4336"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-01-19 18:17.40 ---> saved as "6dda46b41fe34ca34fb51ff56f1e8e23a6a25a0a911d6a0db61cde1c0fd4865e"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian bookworm InRelease
- Get:2 http://deb.debian.org/debian bookworm-updates InRelease [55.4 kB]
- Get:3 http://deb.debian.org/debian-security bookworm-security InRelease [48.0 kB]
- Get:4 http://deb.debian.org/debian-security bookworm-security/main amd64 Packages [291 kB]
- Fetched 394 kB in 0s (912 kB/s)
- Reading package lists...
- 
2026-01-19 18:17.42 ---> saved as "7418ca4cdb50605554af75a48f036d46745f3a34872da21f7293f6bdc0a5b73b"

/home/opam: (run (shell "opam pin add -k version -yn ambient-context-lwt.0.1.1 0.1.1"))
ambient-context-lwt is now pinned to version 0.1.1
2026-01-19 18:17.43 ---> saved as "91a244ccba479c31889641e75034aebbc75a73f0324bd2dddd446d4f91e197ee"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall ambient-context-lwt.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 \"\\\"debian-12\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'ambient-context-lwt.0.1.1' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
ambient-context-lwt.0.1.1 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 10 packages
  - install ambient-context     0.1.1          [required by ambient-context-lwt]
  - install ambient-context-lwt 0.1.1 (pinned)
  - install base-bytes          base           [required by ocplib-endian]
  - install cppo                1.8.0          [required by lwt]
  - install csexp               1.5.2          [required by dune-configurator]
  - install dune                3.21.0         [required by ambient-context-lwt]
  - install dune-configurator   3.21.0         [required by lwt]
  - install lwt                 6.0.0          [required by ambient-context-lwt]
  - install ocamlfind           1.9.8          [required by base-bytes]
  - install ocplib-endian       1.2            [required by lwt]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved ambient-context.0.1.1, ambient-context-lwt.0.1.1  (cached)
-> retrieved cppo.1.8.0  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved dune.3.21.0, dune-configurator.3.21.0  (cached)
-> retrieved lwt.6.0.0  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved ocplib-endian.1.2  (cached)
-> installed ocamlfind.1.9.8
-> installed base-bytes.base
-> installed dune.3.21.0
-> installed csexp.1.5.2
-> installed ambient-context.0.1.1
-> installed cppo.1.8.0
-> installed ocplib-endian.1.2
-> installed dune-configurator.3.21.0
-> installed lwt.6.0.0
-> installed ambient-context-lwt.0.1.1
Done.
# To update the current shell environment, run: eval $(opam env)
2026-01-19 18:18.26 ---> saved as "f6a561bb740980e4965e04378cfca6faa882e24565bc8040cd1f5b6d329725c0"
Job succeeded
2026-01-19 18:18.39: Job succeeded