(not at the head of any monitored branch or PR)
2026-01-07 09:44.43: New job: build lwt_ppx.6.0.0, lower-bounds, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29184/head (1a538ed11284d3a47bf9851621c653c567cbc1a3)
                              on debian-13-ocaml-5.4/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29184/head" && git reset --hard 1a538ed1
git fetch origin master
git merge --no-edit 26ba45ff7b4d5c474404d370f5dab40d5aca345f
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.4@sha256:fc4475154a81e45c7a4fe10ae1ce9017b16705b50ae99ec37ca5504484b8ff17
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn lwt_ppx.6.0.0 6.0.0
RUN opam reinstall lwt_ppx.6.0.0; \
    res=$?; \
    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-13\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'lwt_ppx.6.0.0' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
ENV OPAMCRITERIA="+removed,+count[version-lag,solution]"
ENV OPAMFIXUPCRITERIA="+removed,+count[version-lag,solution]"
ENV OPAMUPGRADECRITERIA="+removed,+count[version-lag,solution]"
RUN opam reinstall lwt_ppx.6.0.0; \
    res=$?; \
    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-13\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'lwt_ppx.6.0.0' && partial_fails="$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 09:44.43: Using cache hint "ocaml/opam:debian-13-ocaml-5.4@sha256:fc4475154a81e45c7a4fe10ae1ce9017b16705b50ae99ec37ca5504484b8ff17-lwt_ppx.6.0.0-1a538ed11284d3a47bf9851621c653c567cbc1a3"
2026-01-07 09:44.43: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.4@sha256:fc4475154a81e45c7a4fe10ae1ce9017b16705b50ae99ec37ca5504484b8ff17)
 (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_ppx.6.0.0 6.0.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall lwt_ppx.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-13\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'lwt_ppx.6.0.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (env OPAMCRITERIA +removed,+count[version-lag,solution])
 (env OPAMFIXUPCRITERIA +removed,+count[version-lag,solution])
 (env OPAMUPGRADECRITERIA +removed,+count[version-lag,solution])
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall lwt_ppx.6.0.0;\
             \n        res=$?;\
             \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-13\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'lwt_ppx.6.0.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-01-07 09:44.43: Waiting for resource in pool OCluster
2026-01-07 09:44.45: Waiting for worker…
2026-01-07 09:44.47: Got resource from pool OCluster
Building on laodoke.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-13-ocaml-5.4@sha256:fc4475154a81e45c7a4fe10ae1ce9017b16705b50ae99ec37ca5504484b8ff17)
2026-01-07 09:46.22 ---> using "03f0951594c938350775771f8c8fede6d107f2d2eee244220b7b8b4b1567de6e" 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 09:46.22 ---> using "c933f036b19f2f0c0887f671ec993a9dc79755040cbb635c24c9b9c241c841cd" 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 09:46.22 ---> using "7ecc7f75a5bf9dcfd6502f8a59ae1f7ab294c7cb737f8dd9abe743475bc57ced" 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=13
# 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       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 09:46.22 ---> using "f03eee248d01b26761fba1ca57252b7a2d5a4073d6250967ee99f663b30113e2" 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 09:46.22 ---> using "bf0379b82096b6ba5dc91e9f0222794ba43ccc18e72cfb20cf13ead08a8436d8" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-01-07 09:46.30 ---> saved as "292afb5653bcfc33a829e267a22bab629bbb36c79f0a10df607e0e1094215217"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-01-07 09:46.51 ---> saved as "03b34a939048930464ca4522a5f7108169268ec0163d4fe373b1b7000dda1639"

/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]
- Get:4 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [94.2 kB]
- Fetched 185 kB in 0s (1575 kB/s)
- Reading package lists...
- 
2026-01-07 09:46.53 ---> saved as "7a3d17df04b0189e6845a9e84877a32b312e51d016014dd49e0acd5cdb0dab09"

/home/opam: (run (shell "opam pin add -k version -yn lwt_ppx.6.0.0 6.0.0"))
lwt_ppx is now pinned to version 6.0.0
2026-01-07 09:46.54 ---> saved as "6d4e36826f998706c2730217a42c5ea9cb585e4cff568ae404a6f07095d97c7b"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall lwt_ppx.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-13\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'lwt_ppx.6.0.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
lwt_ppx.6.0.0 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 14 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_ppx]
  - install dune-configurator   3.20.2         [required by lwt]
  - install lwt                 6.0.0          [required by lwt_ppx]
  - install lwt_ppx             6.0.0 (pinned)
  - install ocaml-compiler-libs v0.17.0        [required by ppxlib]
  - install ocamlfind           1.9.8          [required by base-bytes]
  - install ocplib-endian       1.2            [required by lwt]
  - install ppx_derivers        1.2.1          [required by ppxlib]
  - install ppxlib              0.37.0         [required by lwt_ppx]
  - install sexplib0            v0.17.0        [required by ppxlib]
  - install stdlib-shims        0.3.0          [required by ppxlib]

<><> 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, lwt_ppx.6.0.0  (cached)
-> retrieved ocaml-compiler-libs.v0.17.0  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved ocplib-endian.1.2  (cached)
-> retrieved ppx_derivers.1.2.1  (cached)
-> retrieved ppxlib.0.37.0  (cached)
-> retrieved sexplib0.v0.17.0  (cached)
-> retrieved stdlib-shims.0.3.0  (cached)
-> installed ocamlfind.1.9.8
-> installed base-bytes.base
-> installed dune.3.20.2
-> installed ppx_derivers.1.2.1
-> installed csexp.1.5.2
-> installed cppo.1.8.0
-> installed sexplib0.v0.17.0
-> installed stdlib-shims.0.3.0
-> installed ocaml-compiler-libs.v0.17.0
-> installed ocplib-endian.1.2
-> installed dune-configurator.3.20.2
-> installed lwt.6.0.0
-> installed ppxlib.0.37.0
-> installed lwt_ppx.6.0.0
Done.
# To update the current shell environment, run: eval $(opam env)
2026-01-07 09:47.54 ---> saved as "2e5ff3c8201742405c3387d40947dd0e0ba939c55792b5626ee4643648799721"

/home/opam: (env OPAMCRITERIA +removed,+count[version-lag,solution])

/home/opam: (env OPAMFIXUPCRITERIA +removed,+count[version-lag,solution])

/home/opam: (env OPAMUPGRADECRITERIA +removed,+count[version-lag,solution])

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall lwt_ppx.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-13\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'lwt_ppx.6.0.0' && partial_fails=\"$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:
=== downgrade 8 packages
  - downgrade cppo                1.8.0 to 1.6.7     [uses dune]
  - downgrade csexp               1.5.2 to 1.3.1     [uses dune]
  - downgrade dune                3.20.2 to 3.18.2   [required by lwt_ppx]
  - downgrade dune-configurator   3.20.2 to 2.9.3    [uses dune]
  - downgrade ocamlfind           1.9.8 to 1.9.6
  - downgrade ocplib-endian       1.2 to 1.1         [uses dune]
  - downgrade sexplib0            v0.17.0 to v0.15.1 [uses dune]
  - downgrade stdlib-shims        0.3.0 to 0.1.0     [uses dune]
=== recompile 6 packages
  - recompile base-bytes          base               [uses ocamlfind]
  - recompile lwt                 6.0.0              [uses dune]
  - recompile lwt_ppx             6.0.0 (pinned)
  - recompile ocaml-compiler-libs v0.17.0            [uses dune]
  - recompile ppx_derivers        1.2.1              [uses dune]
  - recompile ppxlib              0.37.0             [uses dune]
=== install 1 package
  - install   result              1.5                [required by dune-configurator]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved cppo.1.6.7  (cached)
-> retrieved csexp.1.3.1  (cached)
-> retrieved dune.3.18.2  (cached)
-> retrieved dune-configurator.2.9.3  (cached)
-> retrieved lwt.6.0.0, lwt_ppx.6.0.0  (cached)
-> retrieved ocaml-compiler-libs.v0.17.0  (cached)
-> retrieved ocamlfind.1.9.6  (cached)
-> retrieved ocplib-endian.1.1  (cached)
-> retrieved ppx_derivers.1.2.1  (cached)
-> retrieved ppxlib.0.37.0  (cached)
-> retrieved result.1.5  (cached)
-> retrieved sexplib0.v0.15.1  (cached)
-> retrieved stdlib-shims.0.1.0  (cached)
-> removed   lwt_ppx.6.0.0
-> removed   lwt.6.0.0
-> removed   dune-configurator.3.20.2
-> removed   csexp.1.5.2
-> removed   ocplib-endian.1.2
-> removed   base-bytes.base
-> removed   cppo.1.8.0
-> removed   ocamlfind.1.9.8
-> removed   ppxlib.0.37.0
-> removed   ocaml-compiler-libs.v0.17.0
-> removed   ppx_derivers.1.2.1
-> removed   sexplib0.v0.17.0
-> removed   stdlib-shims.0.3.0
-> removed   dune.3.20.2
-> installed dune.3.18.2
-> installed ocamlfind.1.9.6
-> installed base-bytes.base
-> installed ppx_derivers.1.2.1
-> installed result.1.5
-> installed sexplib0.v0.15.1
-> installed stdlib-shims.0.1.0
-> installed cppo.1.6.7
-> installed csexp.1.3.1
-> installed ocaml-compiler-libs.v0.17.0
-> installed ocplib-endian.1.1
-> installed dune-configurator.2.9.3
-> installed lwt.6.0.0
-> installed ppxlib.0.37.0
-> installed lwt_ppx.6.0.0
Done.
# To update the current shell environment, run: eval $(opam env)
2026-01-07 09:48.56 ---> saved as "f27c90fcf68f3e6361fb31d04944bbef80fc4ce7e0d7382db7d356abaacb323d"
Job succeeded
2026-01-07 09:49.19: Job succeeded