(not at the head of any monitored branch or PR)
2025-11-10 11:00.33: New job: test lwt.6.0.0~beta00, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/28558/head (db50ce02bd0238ef1431a20de40a98e9f360a8c0)
                              on debian-13-ocaml-4.14/arm64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/28558/head" && git reset --hard db50ce02
git fetch origin master
git merge --no-edit 21f97b2e6d7c617fc0a79cc8e59b2e10690960e1
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.14@sha256:37d2851686f09c534b19d6fbd3aba5229be96ba87cdb83c27ce7719e58950da4
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn lwt.6.0.0~beta00 6.0.0~beta00
RUN opam reinstall lwt.6.0.0~beta00; \
    res=$?; \
    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-13\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'lwt.6.0.0~beta00' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN (opam reinstall --with-test lwt.6.0.0~beta00) || true
RUN opam reinstall --with-test --verbose lwt.6.0.0~beta00; \
    res=$?; \
    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-13\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'lwt.6.0.0~beta00' && partial_fails="$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 .

2025-11-10 11:00.33: Using cache hint "ocaml/opam:debian-13-ocaml-4.14@sha256:37d2851686f09c534b19d6fbd3aba5229be96ba87cdb83c27ce7719e58950da4-lwt.6.0.0~beta00-db50ce02bd0238ef1431a20de40a98e9f360a8c0"
2025-11-10 11:00.33: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.14@sha256:37d2851686f09c534b19d6fbd3aba5229be96ba87cdb83c27ce7719e58950da4)
 (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~beta00 6.0.0~beta00"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall lwt.6.0.0~beta00;\
             \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-13\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'lwt.6.0.0~beta00' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (network host)
      (shell "(opam reinstall --with-test lwt.6.0.0~beta00) || true"))
 (run (shell  "opam reinstall --with-test --verbose lwt.6.0.0~beta00;\
             \n        res=$?;\
             \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-13\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'lwt.6.0.0~beta00' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2025-11-10 11:00.33: Waiting for resource in pool OCluster
2025-11-10 11:00.34: Waiting for worker…
2025-11-10 11:09.32: Got resource from pool OCluster
Building on okypous.caelum.ci.dev
All commits already cached
Updating files:  89% (16697/18704)
Updating files:  90% (16834/18704)
Updating files:  91% (17021/18704)
Updating files:  92% (17208/18704)
Updating files:  93% (17395/18704)
Updating files:  94% (17582/18704)
Updating files:  95% (17769/18704)
Updating files:  96% (17956/18704)
Updating files:  97% (18143/18704)
Updating files:  98% (18330/18704)
Updating files:  99% (18517/18704)
Updating files: 100% (18704/18704)
Updating files: 100% (18704/18704), done.
HEAD is now at 21f97b2e6d Merge pull request #28836 from dbuenzli/b0-publish-bytesrw.0.3.0
Merge made by the 'ort' strategy.
 packages/lwt/lwt.6.0.0~beta00/opam               | 67 ++++++++++++++++++++++++
 packages/lwt_direct/lwt_direct.6.0.0~beta00/opam | 42 +++++++++++++++
 2 files changed, 109 insertions(+)
 create mode 100644 packages/lwt/lwt.6.0.0~beta00/opam
 create mode 100644 packages/lwt_direct/lwt_direct.6.0.0~beta00/opam

(from ocaml/opam:debian-13-ocaml-4.14@sha256:37d2851686f09c534b19d6fbd3aba5229be96ba87cdb83c27ce7719e58950da4)
Unable to find image 'ocaml/opam:debian-13-ocaml-4.14@sha256:37d2851686f09c534b19d6fbd3aba5229be96ba87cdb83c27ce7719e58950da4' locally
docker.io/ocaml/opam@sha256:37d2851686f09c534b19d6fbd3aba5229be96ba87cdb83c27ce7719e58950da4: Pulling from ocaml/opam
1bf310032c9c: Pulling fs layer
1bf310032c9c: Retrying in 5 seconds
1bf310032c9c: Retrying in 4 seconds
1bf310032c9c: Retrying in 3 seconds
1bf310032c9c: Retrying in 2 seconds
1bf310032c9c: Retrying in 1 second
1bf310032c9c: Download complete
1bf310032c9c: Pull complete
Digest: sha256:37d2851686f09c534b19d6fbd3aba5229be96ba87cdb83c27ce7719e58950da4
Status: Downloaded newer image for ocaml/opam@sha256:37d2851686f09c534b19d6fbd3aba5229be96ba87cdb83c27ce7719e58950da4
2025-11-10 11:09.36 ---> using "2a93cbc5ed33c5e8f181b7b1c8263be688374a827343dee17122984783c0b55c" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2025-11-10 11:09.36 ---> using "b681d5e5e5aa29535f5c1a5eb5a71a51e38a3b8f58ddc05453fc47e30f82a76c" 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
2025-11-10 11:09.36 ---> using "8cd7a6c990b344cefb1d17c51732cb4da2e4852eb3548e50f2821a17365bda06" 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~alpha1
# self-upgrade         no
# system               arch=arm64 os=linux os-distribution=debian os-version=13
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 79
# 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
2025-11-10 11:09.36 ---> using "537b92237da9615a86eef612baede8b54dda5b4be53ea54afd455cf19e4f7c48" 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/"))
2025-11-10 11:09.36 ---> using "ef24cee800fc3a883ac35574b262c6dc6300fcf227bcd4ca0b4985ad5164cd55" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2025-11-10 11:09.37 ---> using "63e42048ced083aaa258ee599427c2e3f229cd17f35671334254245362c44a8e" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2025-11-10 11:09.37 ---> using "24c10430d311fab924c779fe3c5ff3fcf92fb6142908d557bec2f91f12f8edfe" from cache

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian trixie InRelease
- Get:2 http://deb.debian.org/debian trixie-updates InRelease [47.3 kB]
- Get:3 http://deb.debian.org/debian-security trixie-security InRelease [43.4 kB]
- Fetched 90.7 kB in 2s (36.3 kB/s)
- Reading package lists...
- 
2025-11-10 11:09.38 ---> saved as "2bfd0c75501043468a70c58742c0d9db11b247a410d2771f122dae60edcca899"

/home/opam: (run (shell "opam pin add -k version -yn lwt.6.0.0~beta00 6.0.0~beta00"))
lwt is now pinned to version 6.0.0~beta00
2025-11-10 11:09.38 ---> saved as "fa4904074cac0ad5ee6667827fbe70b109237030814424187730f82e2e75b158"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall lwt.6.0.0~beta00;\
                        \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-13\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'lwt.6.0.0~beta00' && partial_fails=\"$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~beta00 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 9 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 domain_shims      0.1.0                 [required by lwt]
  - install dune              3.20.2                [required by lwt]
  - install dune-configurator 3.20.2                [required by lwt]
  - install lwt               6.0.0~beta00 (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 domain_shims.0.1.0  (cached)
-> retrieved dune.3.20.2, dune-configurator.3.20.2  (cached)
-> retrieved lwt.6.0.0~beta00  (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 domain_shims.0.1.0
-> 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~beta00
Done.
# To update the current shell environment, run: eval $(opam env)
2025-11-10 11:10.15 ---> saved as "cfc1e3b89a45961beb360a3f94d89d4b23f8438a2a41993cfdba0ef63e6a8116"

/home/opam: (run (network host)
                 (shell "(opam reinstall --with-test lwt.6.0.0~beta00) || true"))
The following actions will be performed:
=== recompile 1 package
  - recompile lwt 6.0.0~beta00 (pinned)

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> removed   lwt.6.0.0~beta00
-> installed lwt.6.0.0~beta00
Done.
# To update the current shell environment, run: eval $(opam env)
2025-11-10 11:10.28 ---> saved as "a1d55a6fe6d0bd7ac94e45bf8f1218d847c87aa9afa480f723f35d36b3838b2d"

/home/opam: (run (shell  "opam reinstall --with-test --verbose lwt.6.0.0~beta00;\
                        \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-13\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'lwt.6.0.0~beta00' && partial_fails=\"$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~beta00 (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/4.14/.opam-switch/build/lwt.6.0.0~beta00)
Processing  2/4: [lwt: dune build]
+ /home/opam/.opam/opam-init/hooks/sandbox.sh "build" "dune" "build" "-p" "lwt" "-j" "79" "@install" "@runtest" (CWD=/home/opam/.opam/4.14/.opam-switch/build/lwt.6.0.0~beta00)
- (cd _build/default/test/multidomain && ./unixpipe.exe)
- unixpipe: ✓
- (cd _build/default/test/multidomain && ./preempting.exe)
- preempting: ✓
- (cd _build/default/test/multidomain && ./basic.exe)
- basic: ✓
- (cd _build/default/test/multidomain && ./movingpromises.exe)
- moving-promises: ✓
- (cd _build/default/test/multidomain && ./domainworkers.exe)
- domain-workers: ✓
- (cd _build/default/test/core && ./main.exe)
- Testing library 'core'...
- .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................SSSSSSSSSSSSSSSSSSSSSSS..................................................................................................................................................
- Ok. 697 tests ran, 23 tests skipped in 0.21 seconds
- (cd _build/default/test/unix && ./main.exe)
- Testing library 'unix'...
- .............................................................................SSSS..........................................
- Ok. 119 tests ran, 4 tests skipped in 6.01 seconds
-> compiled  lwt.6.0.0~beta00
-> removed   lwt.6.0.0~beta00
-> installed lwt.6.0.0~beta00
Done.
# To update the current shell environment, run: eval $(opam env)
2025-11-10 11:10.42 ---> saved as "46483cad6382449f02d0ddf64fdbea9be2567ce942698617ea88ceb50f6860a9"
Job succeeded
2025-11-10 11:10.54: Job succeeded