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2026-04-03 12:25.38: New job: test ocaml-multicore/lwt_eio https://github.com/ocaml-multicore/lwt_eio.git#refs/heads/master (aeced087ef3d7321938db12d27327eab69d972af) (linux-x86_64:(lint-doc))
Base: ocaml/opam:debian-13-ocaml-5.1@sha256:9fdb6b12483b6ee211502cfcdccfa603bc203949c6b28773b62e63598c724d35
Opam project lint documentation


To reproduce locally:


git clone --recursive "https://github.com/ocaml-multicore/lwt_eio.git" -b "master" && cd "lwt_eio" && git reset --hard aeced087
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.1@sha256:9fdb6b12483b6ee211502cfcdccfa603bc203949c6b28773b62e63598c724d35
# debian-13-5.1_opam-2.5
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
RUN sudo ln -f /usr/bin/opam-2.2 /usr/bin/opam
RUN opam init --reinit -ni
RUN uname -rs && opam exec -- ocaml -version && opam --version
WORKDIR /src
RUN sudo chown opam /src
RUN cd ~/opam-repository && (git cat-file -e d06cfb1853afceb1dc127f88edaac3f8110bf6cc || git fetch origin master) && git reset -q --hard d06cfb1853afceb1dc127f88edaac3f8110bf6cc && git log --no-decorate -n1 --oneline && opam update -u
COPY --chown=1000:1000 lwt_eio.opam ./
RUN opam pin add -yn lwt_eio.dev './'
RUN echo '(lang dune 3.0)' > './dune-project'
ENV DEPS="astring.0.8.5 base-bigarray.base base-bytes.base base-domains.base base-nnp.base base-threads.base base-unix.base bigstringaf.0.10.0 camlp-streams.5.0.1 cmdliner.2.1.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.1 dune-configurator.3.22.1 eio.1.2 eio_linux.1.2 eio_main.1.2 eio_posix.1.2 fmt.0.11.0 hmap.0.8.1 iomux.0.4 logs.0.10.0 lwt.6.1.1 lwt-dllist.1.1.0 mdx.2.5.2 mtime.2.1.0 ocaml.5.1.1 ocaml-base-compiler.5.1.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.0.4 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 psq.0.2.1 re.1.14.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.1.1 uring.2.7.0"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.2 --depext-only -y lwt_eio.dev $DEPS
RUN opam install $DEPS
RUN opam install --yes dune 'odoc>=1.5.0'
COPY --chown=1000:1000 . /src/
RUN ODOC_WARN_ERROR=false opam exec -- dune build @doc || (echo "dune build @doc failed"; exit 2)


END-OF-DOCKERFILE
docker build .
END-REPRO-BLOCK


2026-04-03 12:25.38: Using cache hint "ocaml-multicore/lwt_eio-ocaml/opam:debian-13-ocaml-5.1@sha256:9fdb6b12483b6ee211502cfcdccfa603bc203949c6b28773b62e63598c724d35-debian-13-5.1_opam-2.5-5b9aacf0e4f307dcf8142da86151efe9"
2026-04-03 12:25.38: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.1@sha256:9fdb6b12483b6ee211502cfcdccfa603bc203949c6b28773b62e63598c724d35)
(comment debian-13-5.1_opam-2.5)
(user (uid 1000) (gid 1000))
(env CLICOLOR_FORCE 1)
(env OPAMCOLOR always)
(workdir /src)
(run (shell "sudo ln -f /usr/bin/opam-2.2 /usr/bin/opam"))
(run (shell "opam init --reinit -ni"))
(run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
(workdir /src)
(run (shell "sudo chown opam /src"))
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e d06cfb1853afceb1dc127f88edaac3f8110bf6cc || git fetch origin master) && git reset -q --hard d06cfb1853afceb1dc127f88edaac3f8110bf6cc && git log --no-decorate -n1 --oneline && opam update -u"))
(copy (src lwt_eio.opam) (dst ./))
(run (network host)
(shell "opam pin add -yn lwt_eio.dev './'"))
(run (shell "echo '(lang dune 3.0)' > './dune-project'"))
(env DEPS "astring.0.8.5 base-bigarray.base base-bytes.base base-domains.base base-nnp.base base-threads.base base-unix.base bigstringaf.0.10.0 camlp-streams.5.0.1 cmdliner.2.1.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.1 dune-configurator.3.22.1 eio.1.2 eio_linux.1.2 eio_main.1.2 eio_posix.1.2 fmt.0.11.0 hmap.0.8.1 iomux.0.4 logs.0.10.0 lwt.6.1.1 lwt-dllist.1.1.0 mdx.2.5.2 mtime.2.1.0 ocaml.5.1.1 ocaml-base-compiler.5.1.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.0.4 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 psq.0.2.1 re.1.14.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.1.1 uring.2.7.0")
(env CI true)
(env OCAMLCI true)
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam update --depexts && opam install --cli=2.2 --depext-only -y lwt_eio.dev $DEPS"))
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install $DEPS"))
(run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install --yes dune 'odoc>=1.5.0'"))
(copy (src .) (dst /src/))
(run (shell "ODOC_WARN_ERROR=false opam exec -- dune build @doc || (echo \"dune build @doc failed\"; exit 2)"))
)


2026-04-03 12:25.38: Waiting for resource in pool OCluster
2026-04-03 12:25.38: Waiting for worker…
2026-04-03 12:26.14: Got resource from pool OCluster
Building on bremusa.ocamllabs.io
All commits already cached
HEAD is now at aeced08 Merge pull request #31 from raphael-proust/lwt6-compat


(from ocaml/opam:debian-13-ocaml-5.1@sha256:9fdb6b12483b6ee211502cfcdccfa603bc203949c6b28773b62e63598c724d35)
2026-04-03 12:26.15 ---> using "043878a17430eb7307125489308030a24bcdcad0c95c2a109a9fe14316981ea0" from cache


/: (comment debian-13-5.1_opam-2.5)


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


/: (env CLICOLOR_FORCE 1)


/: (env OPAMCOLOR always)


/: (workdir /src)


/src: (run (shell "sudo ln -f /usr/bin/opam-2.2 /usr/bin/opam"))
2026-04-03 12:26.15 ---> saved as "6774b37caea75a9330717f7d76e1dbe5763f6114eb27d74cd00154507199d438"


/src: (run (shell "opam init --reinit -ni"))
Configuring from /home/opam/.opamrc and then 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 development 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
2026-04-03 12:27.06 ---> saved as "38353b8fd9d0b5017ecfc06e135479f1c1ada7341066727010c0a18fcb6eea47"


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-106-generic
The OCaml toplevel, version 5.1.1
2.2.1
2026-04-03 12:27.07 ---> saved as "d6ef3470da485885fea4cfd737301a150a388ef00a8c5b6a5f863b9345549876"


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2026-04-03 12:27.07 ---> saved as "d288e67191947a322f5849368f09eacc7904691948e9617102898da186efb867"


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e d06cfb1853afceb1dc127f88edaac3f8110bf6cc || git fetch origin master) && git reset -q --hard d06cfb1853afceb1dc127f88edaac3f8110bf6cc && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
ffb54b9bdd..2a4b439041  master     -> origin/master
d06cfb1853 Merge pull request #29632 from shonfeder/release-dune-3.22.1


<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>
[default] synchronised from git+file:///home/opam/opam-repository


Everything as up-to-date as possible (run with --verbose to show unavailable upgrades).
However, you may "opam upgrade" these packages explicitly, which will ask permission to downgrade or uninstall the conflicting packages.
Nothing to do.
# Run eval $(opam env) to update the current shell environment
2026-04-03 12:28.02 ---> saved as "a820465ecc8d7e5da89e293b09f70a4b9c73faac5a799244c6eb4886239bfd6a"


/src: (copy (src lwt_eio.opam) (dst ./))
2026-04-03 12:28.03 ---> saved as "b12e765e90d6f6f3a9716d23be1ca15d331dd37f05c5d5a040f6989484dfa1c0"


/src: (run (network host)
(shell "opam pin add -yn lwt_eio.dev './'"))
[lwt_eio.dev] synchronised (file:///src)
lwt_eio is now pinned to file:///src (version dev)
2026-04-03 12:28.07 ---> saved as "f4105a6e500f6bf1eb547d760a4fc1e7cf73698d18008d03780cb8231a7ca3d5"


/src: (run (shell "echo '(lang dune 3.0)' > './dune-project'"))
2026-04-03 12:28.08 ---> saved as "126830811da58e5ec0af055f17e903c4fc271d9ee37c625ad4ab9f8e78b8a19b"


/src: (env DEPS "astring.0.8.5 base-bigarray.base base-bytes.base base-domains.base base-nnp.base base-threads.base base-unix.base bigstringaf.0.10.0 camlp-streams.5.0.1 cmdliner.2.1.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.1 dune-configurator.3.22.1 eio.1.2 eio_linux.1.2 eio_main.1.2 eio_posix.1.2 fmt.0.11.0 hmap.0.8.1 iomux.0.4 logs.0.10.0 lwt.6.1.1 lwt-dllist.1.1.0 mdx.2.5.2 mtime.2.1.0 ocaml.5.1.1 ocaml-base-compiler.5.1.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.0.4 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 psq.0.2.1 re.1.14.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.1.1 uring.2.7.0")


/src: (env CI true)


/src: (env OCAMLCI true)


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam update --depexts && opam install --cli=2.2 --depext-only -y lwt_eio.dev $DEPS"))
+ /usr/bin/sudo "apt-get" "update"
- Get:1 http://deb.debian.org/debian trixie InRelease [140 kB]
- 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 trixie/main amd64 Packages [9671 kB]
- Get:5 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [119 kB]
- Fetched 10.0 MB in 2s (4407 kB/s)
- Reading package lists...
- 


<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[lwt_eio.dev] synchronised (file:///src)


[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).
[NOTE] Package ocaml-config is already installed (current version is 3).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.1.1).
[NOTE] Package ocaml is already installed (current version is 5.1.1).
[NOTE] Package base-unix is already installed (current version is base).
[NOTE] Package base-threads is already installed (current version is base).
[NOTE] Package base-nnp is already installed (current version is base).
[NOTE] Package base-domains is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).
2026-04-03 12:28.47 ---> saved as "5804eafdd202d8d15d9943767a6b0fad0948b76c27835126fb1bfebd28aa0207"


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install $DEPS"))
[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).
[NOTE] Package ocaml-config is already installed (current version is 3).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.1.1).
[NOTE] Package ocaml is already installed (current version is 5.1.1).
[NOTE] Package base-unix is already installed (current version is base).
[NOTE] Package base-threads is already installed (current version is base).
[NOTE] Package base-nnp is already installed (current version is base).
[NOTE] Package base-domains is already installed (current version is base).
[NOTE] Package base-bigarray is already installed (current version is base).
The following actions will be performed:
=== install 35 packages
- install astring            0.8.5
- install base-bytes         base
- install bigstringaf        0.10.0
- install camlp-streams      5.0.1
- install cmdliner           2.1.0
- install cppo               1.8.0
- install csexp              1.5.2
- install cstruct            6.2.0
- install domain-local-await 1.0.1
- install dune               3.22.1
- install dune-configurator  3.22.1
- install eio                1.2
- install eio_linux          1.2
- install eio_main           1.2
- install eio_posix          1.2
- install fmt                0.11.0
- install hmap               0.8.1
- install iomux              0.4
- install logs               0.10.0
- install lwt                6.1.1
- install lwt-dllist         1.1.0
- install mdx                2.5.2
- install mtime              2.1.0
- install ocaml-version      4.0.4
- install ocamlbuild         0.16.1
- install ocamlfind          1.9.8
- install ocplib-endian      1.2
- install optint             0.3.0
- install psq                0.2.1
- install re                 1.14.0
- install result             1.5
- install seq                base
- install thread-table       1.0.0
- install topkg              1.1.1
- install uring              2.7.0


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved bigstringaf.0.10.0  (cached)
-> retrieved camlp-streams.5.0.1  (cached)
-> retrieved astring.0.8.5  (cached)
-> retrieved cppo.1.8.0  (cached)
-> retrieved cmdliner.2.1.0  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved domain-local-await.1.0.1  (cached)
-> retrieved cstruct.6.2.0  (cached)
-> retrieved fmt.0.11.0  (cached)
-> retrieved hmap.0.8.1  (cached)
-> retrieved iomux.0.4  (cached)
-> retrieved logs.0.10.0  (cached)
-> retrieved lwt.6.1.1  (cached)
-> retrieved lwt-dllist.1.1.0  (cached)
-> retrieved eio.1.2, eio_linux.1.2, eio_main.1.2, eio_posix.1.2  (cached)
-> retrieved mdx.2.5.2  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved ocaml-version.4.0.4  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved ocplib-endian.1.2  (cached)
-> retrieved optint.0.3.0  (cached)
-> retrieved psq.0.2.1  (cached)
-> retrieved result.1.5  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved re.1.14.0  (cached)
-> retrieved thread-table.1.0.0  (cached)
-> retrieved topkg.1.1.1  (cached)
-> retrieved uring.2.7.0  (cached)
-> retrieved dune.3.22.1, dune-configurator.3.22.1  (cached)
-> installed cmdliner.2.1.0
-> installed ocamlfind.1.9.8
-> installed base-bytes.base
-> installed ocamlbuild.0.16.1
-> installed topkg.1.1.1
-> installed hmap.0.8.1
-> installed mtime.2.1.0
-> installed fmt.0.11.0
-> installed astring.0.8.5
-> installed dune.3.22.1
-> installed camlp-streams.5.0.1
-> installed psq.0.2.1
-> installed lwt-dllist.1.1.0
-> installed ocaml-version.4.0.4
-> installed csexp.1.5.2
-> installed cppo.1.8.0
-> installed cstruct.6.2.0
-> installed optint.0.3.0
-> installed re.1.14.0
-> installed result.1.5
-> installed thread-table.1.0.0
-> installed ocplib-endian.1.2
-> installed domain-local-await.1.0.1
-> installed dune-configurator.3.22.1
-> installed bigstringaf.0.10.0
-> installed iomux.0.4
-> installed eio.1.2
-> installed uring.2.7.0
-> installed lwt.6.1.1
-> installed eio_linux.1.2
-> installed eio_posix.1.2
-> installed eio_main.1.2
-> installed logs.0.10.0
-> installed mdx.2.5.2
Done.
# Run eval $(opam env) to update the current shell environment
2026-04-03 12:31.28 ---> saved as "d81bcd0e3644096b9fe722b09e1aeb740b626a149dd13404169001b949f68e41"


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "opam install --yes dune 'odoc>=1.5.0'"))
[NOTE] Package dune is already installed (current version is 3.22.1).
The following actions will be performed:
=== install 7 packages
- install crunch      4.0.0 [required by odoc]
- install fpath       0.7.3 [required by odoc]
- install odoc        3.1.0
- install odoc-parser 3.1.0 [required by odoc]
- install ptime       1.2.0 [required by crunch]
- install tyxml       4.6.0 [required by odoc]
- install uutf        1.0.4 [required by tyxml]


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved crunch.4.0.0  (cached)
-> retrieved fpath.0.7.3  (cached)
-> retrieved ptime.1.2.0  (cached)
-> retrieved uutf.1.0.4  (cached)
-> retrieved tyxml.4.6.0  (cached)
-> retrieved odoc.3.1.0, odoc-parser.3.1.0  (cached)
-> installed fpath.0.7.3
-> installed ptime.1.2.0
-> installed uutf.1.0.4
-> installed crunch.4.0.0
-> installed odoc-parser.3.1.0
-> installed tyxml.4.6.0
-> installed odoc.3.1.0
Done.
# Run eval $(opam env) to update the current shell environment
2026-04-03 12:32.06 ---> saved as "fc3e632f4fe281030b2617edac063450f17afe295f8875a47412cfcede1fee57"


/src: (copy (src .) (dst /src/))
2026-04-03 12:32.06 ---> saved as "bcaf0bd45c038999d2a8659d5ef9b1d68e93330fb02914b070df7ca2fb75f0b6"


/src: (run (shell "ODOC_WARN_ERROR=false opam exec -- dune build @doc || (echo \"dune build @doc failed\"; exit 2)"))
(cd _build/default/_doc/_odocls/lwt_eio && /home/opam/.opam/5.1/bin/odoc link -I ../../_odoc/pkg/lwt_eio -I ../../../lib/.lwt_eio.objs/byte -o lwt_eio.odocl ../../../lib/.lwt_eio.objs/byte/lwt_eio.odoc)
File "lib/lwt_eio.mli", line 61, characters 21-50:
Warning: Failed to resolve reference unresolvedroot(Lwt_preemptive).run_in_main Couldn't find "Lwt_preemptive"
File "lib/lwt_eio.mli", line 25, characters 16-36:
Warning: Failed to resolve reference unresolvedroot(Eio).Promise.await Couldn't find "Eio"
2026-04-03 12:32.07 ---> saved as "6c1d4ab0aa49336a9219643bcfe2416fd72ad7b6bbf5ba4a4d98697dd1a54e6e"
Job succeeded
2026-04-03 12:32.07: Job succeeded