(not at the head of any monitored branch or PR)
2025-12-30 15:41.47: New job: test lwt.6.0.0, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29147/head (a9c2dfa8be3eba34b7f4bd01fa139b8e6d829c91)
                              on ubuntu-25.04-ocaml-5.4/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29147/head" && git reset --hard a9c2dfa8
git fetch origin master
git merge --no-edit f2d102f951a5dc2af6db218c6aef53c80186295a
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:ubuntu-25.04-ocaml-5.4@sha256:9913818f77abf409c312aaf47eed0782d6ce7391aec75d97d102be5c63a6de7c
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn lwt.6.0.0 6.0.0
RUN opam reinstall lwt.6.0.0; \
    res=$?; \
    test "$res" != 31 && exit "$res"; \
    export OPAMCLI=2.0; \
    build_dir=$(opam var prefix)/.opam-switch/build; \
    failed=$(ls "$build_dir"); \
    partial_fails=""; \
    for pkg in $failed; do \
    if opam show -f x-ci-accept-failures: "$pkg" | grep -qF "\"ubuntu-25.04\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'lwt.6.0.0' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN (opam reinstall --with-test lwt.6.0.0) || true
RUN opam reinstall --with-test --verbose lwt.6.0.0; \
    res=$?; \
    test "$res" != 31 && exit "$res"; \
    export OPAMCLI=2.0; \
    build_dir=$(opam var prefix)/.opam-switch/build; \
    failed=$(ls "$build_dir"); \
    partial_fails=""; \
    for pkg in $failed; do \
    if opam show -f x-ci-accept-failures: "$pkg" | grep -qF "\"ubuntu-25.04\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'lwt.6.0.0' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1

END-OF-DOCKERFILE
docker build -f ../Dockerfile .

2025-12-30 15:41.47: Using cache hint "ocaml/opam:ubuntu-25.04-ocaml-5.4@sha256:9913818f77abf409c312aaf47eed0782d6ce7391aec75d97d102be5c63a6de7c-lwt.6.0.0-a9c2dfa8be3eba34b7f4bd01fa139b8e6d829c91"
2025-12-30 15:41.47: Using OBuilder spec:
((from ocaml/opam:ubuntu-25.04-ocaml-5.4@sha256:9913818f77abf409c312aaf47eed0782d6ce7391aec75d97d102be5c63a6de7c)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
 (run (network host)
      (shell "opam init --reinit --config .opamrc-sandbox -ni"))
 (run (shell "opam option solver=builtin-0install && opam config report"))
 (env OPAMDOWNLOADJOBS 1)
 (env OPAMERRLOGLEN 0)
 (env OPAMPRECISETRACKING 1)
 (env CI true)
 (env OPAM_REPO_CI true)
 (run (shell "rm -rf opam-repository/"))
 (copy (src .) (dst opam-repository/))
 (run (shell "opam repository set-url --strict default opam-repository/"))
 (run (network host)
      (shell "opam update --depexts || true"))
 (run (shell "opam pin add -k version -yn lwt.6.0.0 6.0.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall lwt.6.0.0;\
             \n        res=$?;\
             \n        test \"$res\" != 31 && exit \"$res\";\
             \n        export OPAMCLI=2.0;\
             \n        build_dir=$(opam var prefix)/.opam-switch/build;\
             \n        failed=$(ls \"$build_dir\");\
             \n        partial_fails=\"\";\
             \n        for pkg in $failed; do\
             \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"ubuntu-25.04\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'lwt.6.0.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (network host)
      (shell "(opam reinstall --with-test lwt.6.0.0) || true"))
 (run (shell  "opam reinstall --with-test --verbose lwt.6.0.0;\
             \n        res=$?;\
             \n        test \"$res\" != 31 && exit \"$res\";\
             \n        export OPAMCLI=2.0;\
             \n        build_dir=$(opam var prefix)/.opam-switch/build;\
             \n        failed=$(ls \"$build_dir\");\
             \n        partial_fails=\"\";\
             \n        for pkg in $failed; do\
             \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"ubuntu-25.04\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'lwt.6.0.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-12-30 15:41.47: Waiting for resource in pool OCluster
2025-12-30 15:41.49: Waiting for worker…
2025-12-30 15:41.53: Got resource from pool OCluster
Building on asteria.caelum.ci.dev
All commits already cached
HEAD is now at f2d102f951 Merge pull request #29150 from raphael-proust/llvm-20-21-only-cosmetics
Merge made by the 'ort' strategy.
 packages/lwt/lwt.6.0.0/opam                        | 64 ++++++++++++++++++++++
 packages/lwt_direct/lwt_direct.6.0.0/opam          | 41 ++++++++++++++
 packages/lwt_ppx/lwt_ppx.6.0.0/opam                | 46 ++++++++++++++++
 .../lwt_runtime_events.6.0.0/opam                  | 39 +++++++++++++
 4 files changed, 190 insertions(+)
 create mode 100644 packages/lwt/lwt.6.0.0/opam
 create mode 100644 packages/lwt_direct/lwt_direct.6.0.0/opam
 create mode 100644 packages/lwt_ppx/lwt_ppx.6.0.0/opam
 create mode 100644 packages/lwt_runtime_events/lwt_runtime_events.6.0.0/opam

(from ocaml/opam:ubuntu-25.04-ocaml-5.4@sha256:9913818f77abf409c312aaf47eed0782d6ce7391aec75d97d102be5c63a6de7c)
2025-12-30 15:43.55 ---> using "63aef653e3800d2a1c5981bf5b080423076805a1d6598ab15efc1d50bf92bf78" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2025-12-30 15:43.55 ---> using "0f32c55c89333537cbeac44c76c361ce1ba1c5ac8c8ae81d3c4db0fb8ec64554" 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.

Continue? [Y/n] y
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.

Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2025-12-30 15:43.55 ---> using "fab647288135cdf54f8ccc8e48278117cd11a40e52feff28bcf042a1e8ff6e48" 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=ubuntu os-version=25.04
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 255
# repositories         1 (version-controlled)
# pinned               1 (version)
# current-switch       5.4
# invariant            ["ocaml-base-compiler" {>= "5.4.0"}]
# compiler-packages    ocaml-base-compiler.5.4.0, ocaml-compiler.5.4.0, ocaml-options-vanilla.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/5.4/lib/ocaml/stublibs:/home/opam/.opam/5.4/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       5.4.0
2025-12-30 15:43.55 ---> using "d698bef11fa07a489196a39d3b865f4b7b1a2892a1b34cd3af0826181c34ec49" from cache

/home/opam: (env OPAMDOWNLOADJOBS 1)

/home/opam: (env OPAMERRLOGLEN 0)

/home/opam: (env OPAMPRECISETRACKING 1)

/home/opam: (env CI true)

/home/opam: (env OPAM_REPO_CI true)

/home/opam: (run (shell "rm -rf opam-repository/"))
2025-12-30 15:43.55 ---> using "5176152e634434cb62a0abb7ba48dad0c861e4859326ca5bf6d698a6dd9f3dbb" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-12-30 15:43.56 ---> using "40a244fe60eb548815c2435979509909d6121fd6d6b3b9a30dc86bda746ddd05" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-12-30 15:44.03 ---> saved as "2375c60f4b38be4832056544c8cf482725d79c7ad193818715fde0d896505495"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://archive.ubuntu.com/ubuntu plucky InRelease
- Get:2 http://security.ubuntu.com/ubuntu plucky-security InRelease [126 kB]
- Get:3 http://archive.ubuntu.com/ubuntu plucky-updates InRelease [126 kB]
- Get:4 http://archive.ubuntu.com/ubuntu plucky-backports InRelease [126 kB]
- Fetched 378 kB in 1s (633 kB/s)
- Reading package lists...
- 
2025-12-30 15:44.05 ---> saved as "4102e06a51480badeeb9b4efac3eca9334c4686d0c1e12f6c770f93d7c71ac53"

/home/opam: (run (shell "opam pin add -k version -yn lwt.6.0.0 6.0.0"))
lwt is now pinned to version 6.0.0
2025-12-30 15:44.06 ---> saved as "4c4bffe47ac83aebff43fa087aaff9848b34c970d5c85f381459673dc4b520b0"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall lwt.6.0.0;\
                        \n        res=$?;\
                        \n        test \"$res\" != 31 && exit \"$res\";\
                        \n        export OPAMCLI=2.0;\
                        \n        build_dir=$(opam var prefix)/.opam-switch/build;\
                        \n        failed=$(ls \"$build_dir\");\
                        \n        partial_fails=\"\";\
                        \n        for pkg in $failed; do\
                        \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"ubuntu-25.04\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'lwt.6.0.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
lwt.6.0.0 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 8 packages
  - install base-bytes        base           [required by ocplib-endian]
  - install cppo              1.8.0          [required by lwt]
  - install csexp             1.5.2          [required by dune-configurator]
  - install dune              3.20.2         [required by lwt]
  - install dune-configurator 3.20.2         [required by lwt]
  - install lwt               6.0.0 (pinned)
  - install ocamlfind         1.9.8          [required by base-bytes]
  - install ocplib-endian     1.2            [required by lwt]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved cppo.1.8.0  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved dune.3.20.2, dune-configurator.3.20.2  (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.3.20.2
-> installed csexp.1.5.2
-> installed cppo.1.8.0
-> installed ocplib-endian.1.2
-> installed dune-configurator.3.20.2
-> installed lwt.6.0.0
Done.
# To update the current shell environment, run: eval $(opam env)
2025-12-30 15:44.40 ---> saved as "2682e739c9302a54cc69f7b5cc9457a312de87209735aa81215a3369935cd1a5"

/home/opam: (run (network host)
                 (shell "(opam reinstall --with-test lwt.6.0.0) || true"))
The following actions will be performed:
=== recompile 1 package
  - recompile lwt 6.0.0 (pinned)

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> removed   lwt.6.0.0
-> installed lwt.6.0.0
Done.
# To update the current shell environment, run: eval $(opam env)
2025-12-30 15:44.54 ---> saved as "7199b46a33a0c469029a2be19ebb019d0a64341f0b5687806363b120f7867900"

/home/opam: (run (shell  "opam reinstall --with-test --verbose lwt.6.0.0;\
                        \n        res=$?;\
                        \n        test \"$res\" != 31 && exit \"$res\";\
                        \n        export OPAMCLI=2.0;\
                        \n        build_dir=$(opam var prefix)/.opam-switch/build;\
                        \n        failed=$(ls \"$build_dir\");\
                        \n        partial_fails=\"\";\
                        \n        for pkg in $failed; do\
                        \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"ubuntu-25.04\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'lwt.6.0.0' && partial_fails=\"$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 lwt 6.0.0 (pinned)

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Processing  2/4: [lwt: dune exec]
+ /home/opam/.opam/opam-init/hooks/sandbox.sh "build" "dune" "exec" "-p" "lwt" "src/unix/config/discover.exe" "--" "--save" "--use-libev" "false" (CWD=/home/opam/.opam/5.4/.opam-switch/build/lwt.6.0.0)
Processing  2/4: [lwt: dune build]
+ /home/opam/.opam/opam-init/hooks/sandbox.sh "build" "dune" "build" "-p" "lwt" "-j" "255" "@install" "@runtest" (CWD=/home/opam/.opam/5.4/.opam-switch/build/lwt.6.0.0)
- (cd _build/default/test/core && ./main.exe)
- Testing library 'core'...
- ...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................SSSSSSSSSSSSSSSSSSSSSSS..................................................................................................................................................
- Ok. 705 tests ran, 23 tests skipped in 0.14 seconds
- (cd _build/default/test/unix && ./main.exe)
- Testing library 'unix'...
- .................................SSSSS..............................................................................................................SSSS...................................................................................
- Ok. 226 tests ran, 9 tests skipped in 6.31 seconds
-> compiled  lwt.6.0.0
-> removed   lwt.6.0.0
-> installed lwt.6.0.0
Done.
# To update the current shell environment, run: eval $(opam env)
2025-12-30 15:45.07 ---> saved as "9535b2a41f7d7995ee11d1bb2b5c34db2646cf45999bf4760240867ace8c33d9"
Job succeeded
2025-12-30 15:46.26: Job succeeded