(not at the head of any monitored branch or PR)
2026-01-07 09:44.44: New job: test lwt.6.0.0, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29184/head (1a538ed11284d3a47bf9851621c653c567cbc1a3)
                              on debian-12-ocaml-5.4/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29184/head" && git reset --hard 1a538ed1
git fetch origin master
git merge --no-edit 26ba45ff7b4d5c474404d370f5dab40d5aca345f
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-12-ocaml-5.4@sha256:08571356255bd5aada4bead3b6d8db4f96fc5376311fd6200304c0ca1e530857
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn lwt.6.0.0 6.0.0
RUN opam reinstall lwt.6.0.0; \
    res=$?; \
    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 "\"debian-12\""; 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 "\"debian-12\""; 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 .

2026-01-07 09:44.44: Using cache hint "ocaml/opam:debian-12-ocaml-5.4@sha256:08571356255bd5aada4bead3b6d8db4f96fc5376311fd6200304c0ca1e530857-lwt.6.0.0-1a538ed11284d3a47bf9851621c653c567cbc1a3"
2026-01-07 09:44.44: Using OBuilder spec:
((from ocaml/opam:debian-12-ocaml-5.4@sha256:08571356255bd5aada4bead3b6d8db4f96fc5376311fd6200304c0ca1e530857)
 (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 \"\\\"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 \"$pkg\" != 'lwt.6.0.0' && partial_fails=\"$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 \"\\\"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 \"$pkg\" != 'lwt.6.0.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-01-07 09:44.44: Waiting for resource in pool OCluster
2026-01-07 09:44.45: Waiting for worker…
2026-01-07 09:46.04: Got resource from pool OCluster
Building on asteria.caelum.ci.dev
All commits already cached
HEAD is now at 26ba45ff7b Merge pull request #29174 from craff/master
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:debian-12-ocaml-5.4@sha256:08571356255bd5aada4bead3b6d8db4f96fc5376311fd6200304c0ca1e530857)
2026-01-07 09:48.44 ---> using "34df517b5a528590645a754f3ef4e5ec7905d98ec0dcdbba6707110142ccfdea" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-01-07 09:48.44 ---> using "73b7010857efa8668fac31f66dc0386473572d108f15807241048556c91bc35f" 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
2026-01-07 09:48.44 ---> using "e01a63fb711bd0be3a5dd5ab789090e8f97aacdcbaa349069e248f606f1b5c15" 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                 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
2026-01-07 09:48.44 ---> using "cd4d5780c02d76ea7b1362cd17e5a51635779f9a532d43fe81ca24ff25e1aa69" 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/"))
2026-01-07 09:48.44 ---> using "b81d479d21199f572554d0e35f4cb16d68731e2af0d1c0734f890eae23f6e2e7" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-01-07 09:48.45 ---> saved as "2392726ee7cfde67e63c56f8b43d8e3352b5680c96261d1bc0b95dbae60e279a"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-01-07 09:49.04 ---> saved as "b19d96fdd3e9ed234bf03b0b3755ef1b5d2af333a5d409dfea735c0751b8b1fd"

/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 [290 kB]
- Fetched 393 kB in 0s (1092 kB/s)
- Reading package lists...
2026-01-07 09:49.06 ---> saved as "f6099945bc97591c0750f496dc2404629d9cf8ddc4f071b4c21ca09db13c674e"

/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
2026-01-07 09:49.06 ---> saved as "e590337366b7b350b045b7ba4075d1ceb74d0c239a8fdc601a112e940a4c9b44"

/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 \"\\\"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 \"$pkg\" != 'lwt.6.0.0' && partial_fails=\"$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)
2026-01-07 09:49.39 ---> saved as "422967b0ec5353df28f09a2d1bd627a2729a6e82753d27833eb259d44a68d235"

/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)
2026-01-07 09:49.52 ---> saved as "735b9ba6610805803875b3947a50a1ca8dd99df8fe394afdf1e79a174ff8a5f6"

/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 \"\\\"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 \"$pkg\" != 'lwt.6.0.0' && partial_fails=\"$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)
2026-01-07 09:50.05 ---> saved as "024d9237fea28f855dadc528ee740c45b7b659c97008bc7c63f8d049c22eecc8"
Job succeeded
2026-01-07 09:50.14: Job succeeded