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2026-01-09 21:43.43: New job: test ocaml-multicore/eio https://github.com/ocaml-multicore/eio.git#refs/pull/575/head (b98d61130cae3871d3e4b891311e93ae4051463f) (linux-x86_64:(lint-doc))
Base: ocaml/opam:debian-13-ocaml-5.2@sha256:9af90c5283bf719e1a1f7a134db0529a98b608b10a01ce5a4bad59d6f2464dc2
Opam project lint documentation


To reproduce locally:


git clone --recursive "https://github.com/ocaml-multicore/eio.git" && cd "eio" && git fetch origin "refs/pull/575/head" && git reset --hard b98d6113
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.2@sha256:9af90c5283bf719e1a1f7a134db0529a98b608b10a01ce5a4bad59d6f2464dc2
# debian-13-5.2_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 c65fcb116531ae66ad3316b265e233443ef25044 || git fetch origin master) && git reset -q --hard c65fcb116531ae66ad3316b265e233443ef25044 && git log --no-decorate -n1 --oneline && opam update -u
COPY --chown=1000:1000 eio_windows.opam eio_posix.opam eio_main.opam eio_linux.opam eio.opam ./
RUN opam pin add -yn eio_windows.dev './' && \
opam pin add -yn eio_posix.dev './' && \
opam pin add -yn eio_main.dev './' && \
opam pin add -yn eio_linux.dev './' && \
opam pin add -yn eio.dev './'
RUN echo '(lang dune 3.0)' > './dune-project'
ENV DEPS="afl-persistent.1.4 alcotest.1.9.1 astring.0.8.5 backoff.0.1.1 base-bigarray.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 conf-bash.1 containers.3.16 cppo.1.8.0 crowbar.0.2.2 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 domain-local-timeout.1.0.1 dscheck.0.5.0 dune.3.20.2 dune-configurator.3.20.2 either.1.0.0 fmt.0.11.0 hmap.0.8.1 iomux.0.4 kcas.0.7.0 logs.0.10.0 lwt-dllist.1.1.0 mdx.2.5.1 mtime.2.1.0 multicore-magic.2.3.1 ocaml.5.2.1 ocaml-base-compiler.5.2.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.3 ocamlbuild.0.16.1 ocamlfind.1.9.8 optint.0.3.0 oseq.0.5.1 psq.0.2.1 re.1.14.0 result.1.5 seq.base stdlib-shims.0.3.0 thread-table.1.0.0 topkg.1.1.1 tsort.2.2.0 uring.2.7.0 uutf.1.0.4 yojson.3.0.0"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.2 --depext-only -y eio_windows.dev eio_posix.dev eio_main.dev eio_linux.dev 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


2026-01-09 21:43.43: Using cache hint "ocaml-multicore/eio-ocaml/opam:debian-13-ocaml-5.2@sha256:9af90c5283bf719e1a1f7a134db0529a98b608b10a01ce5a4bad59d6f2464dc2-debian-13-5.2_opam-2.5-8840743a534d1646ae78a0ba45ada791"
2026-01-09 21:43.43: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.2@sha256:9af90c5283bf719e1a1f7a134db0529a98b608b10a01ce5a4bad59d6f2464dc2)
(comment debian-13-5.2_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 c65fcb116531ae66ad3316b265e233443ef25044 || git fetch origin master) && git reset -q --hard c65fcb116531ae66ad3316b265e233443ef25044 && git log --no-decorate -n1 --oneline && opam update -u"))
(copy (src eio_windows.opam eio_posix.opam eio_main.opam eio_linux.opam eio.opam)
(dst ./))
(run (network host)
(shell  "opam pin add -yn eio_windows.dev './' && \
\nopam pin add -yn eio_posix.dev './' && \
\nopam pin add -yn eio_main.dev './' && \
\nopam pin add -yn eio_linux.dev './' && \
\nopam pin add -yn eio.dev './'"))
(run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
(env DEPS "afl-persistent.1.4 alcotest.1.9.1 astring.0.8.5 backoff.0.1.1 base-bigarray.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 conf-bash.1 containers.3.16 cppo.1.8.0 crowbar.0.2.2 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 domain-local-timeout.1.0.1 dscheck.0.5.0 dune.3.20.2 dune-configurator.3.20.2 either.1.0.0 fmt.0.11.0 hmap.0.8.1 iomux.0.4 kcas.0.7.0 logs.0.10.0 lwt-dllist.1.1.0 mdx.2.5.1 mtime.2.1.0 multicore-magic.2.3.1 ocaml.5.2.1 ocaml-base-compiler.5.2.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.3 ocamlbuild.0.16.1 ocamlfind.1.9.8 optint.0.3.0 oseq.0.5.1 psq.0.2.1 re.1.14.0 result.1.5 seq.base stdlib-shims.0.3.0 thread-table.1.0.0 topkg.1.1.1 tsort.2.2.0 uring.2.7.0 uutf.1.0.4 yojson.3.0.0")
(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 eio_windows.dev eio_posix.dev eio_main.dev eio_linux.dev 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)"))
)


2026-01-09 21:43.43: Waiting for resource in pool OCluster
2026-01-09 21:43.43: Waiting for worker…
2026-01-09 23:57.14: Got resource from pool OCluster
Building on clete
All commits already cached
HEAD is now at b98d611 add a Eio_unix.Net.Sockopt.pp as well


(from ocaml/opam:debian-13-ocaml-5.2@sha256:9af90c5283bf719e1a1f7a134db0529a98b608b10a01ce5a4bad59d6f2464dc2)
Unable to find image 'ocaml/opam:debian-13-ocaml-5.2@sha256:9af90c5283bf719e1a1f7a134db0529a98b608b10a01ce5a4bad59d6f2464dc2' locally
docker.io/ocaml/opam@sha256:9af90c5283bf719e1a1f7a134db0529a98b608b10a01ce5a4bad59d6f2464dc2: Pulling from ocaml/opam
2981f7e8980b: Already exists
9c63e1c4ba84: Already exists
02578b9c9f1b: Already exists
3801cb7ba5e6: Already exists
1c4cdedd39f1: Already exists
40f6006c5f5a: Already exists
c451a17216ec: Already exists
e4104b8f72ee: Already exists
7c7dbc5e7919: Already exists
aa82be714e7c: Already exists
922520f12384: Already exists
9bfea042cef8: Already exists
1244979f7c21: Already exists
7583a0e34f94: Already exists
14bef3f2665a: Already exists
3a4b42ce6cb5: Already exists
b0a08a900877: Already exists
b0a08a900877: Already exists
16ac87e68d60: Already exists
74ac6e8c9b82: Already exists
b41290a57dc5: Already exists
592e5bcb7159: Already exists
4f4fb700ef54: Already exists
1db0705661a3: Already exists
76bb8e35b9cc: Already exists
3bc9d98c3b49: Already exists
7096ef42e6c0: Already exists
cd0e70de8125: Already exists
23ffab57f98e: Already exists
b974353d8023: Already exists
c74fba566723: Already exists
5ad399846f45: Already exists
3e7203fa3980: Already exists
0b8915d2a92b: Already exists
e68c7a56c438: Already exists
9024d680a167: Already exists
3c7c73421b6e: Already exists
7134fa9b4278: Already exists
9d94fb523099: Already exists
20d06dbdae7e: Already exists
b9a45e537661: Already exists
a08a9a974983: Already exists
8924679c4512: Already exists
768c99fc4263: Already exists
e01f81963b33: Already exists
0f3eeb0bdcdf: Already exists
be892efa8919: Already exists
2d917f727d89: Already exists
Digest: sha256:9af90c5283bf719e1a1f7a134db0529a98b608b10a01ce5a4bad59d6f2464dc2
Status: Downloaded newer image for ocaml/opam@sha256:9af90c5283bf719e1a1f7a134db0529a98b608b10a01ce5a4bad59d6f2464dc2
2026-01-09 23:57.15 ---> using "7c3ff70eccce1f027fdce3b72c5e1ce82e266d82df52104964f62d43302ff238" from cache


/: (comment debian-13-5.2_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"))
2026-01-09 23:57.15 ---> using "fcd15fa3845a642c22f765fa470f40a71ce463b28ed220fb89961b15710fe400" from cache


/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
2026-01-09 23:57.15 ---> using "bc1c43708974c4a9f6e0116d89b530a6c747957864fe5922e98312e241721c4a" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 6.8.0-90-generic
The OCaml toplevel, version 5.2.1
2.2.1
2026-01-09 23:57.15 ---> using "34b651d7fa302b887d299ff9815900577fa58cac3e9b9fd66896cd62e92ec5c1" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2026-01-09 23:57.15 ---> using "40ec31e2ed3d5c3260ef59aadff92e9eff20cc4a42f82e03740de5af481ff9f4" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e c65fcb116531ae66ad3316b265e233443ef25044 || git fetch origin master) && git reset -q --hard c65fcb116531ae66ad3316b265e233443ef25044 && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
ee48e882f0..a6b2f19780  master     -> origin/master
c65fcb1165 Merge pull request #29080 from dra27/ocaml-config-urls


<><> 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
2026-01-09 23:57.35 ---> saved as "8185243190893352f377153401461ce392eff44f4c13a1d2e76b81cb9a5093e7"


/src: (copy (src eio_windows.opam eio_posix.opam eio_main.opam eio_linux.opam eio.opam)
(dst ./))
2026-01-09 23:57.35 ---> saved as "92d2f7588b51676054087aa33675d2e2025a3ac39517b96416386635e3e76bde"


/src: (run (network host)
(shell  "opam pin add -yn eio_windows.dev './' && \
\nopam pin add -yn eio_posix.dev './' && \
\nopam pin add -yn eio_main.dev './' && \
\nopam pin add -yn eio_linux.dev './' && \
\nopam pin add -yn eio.dev './'"))
[eio_windows.dev] synchronised (file:///src)
eio_windows is now pinned to file:///src (version dev)
[eio_posix.dev] synchronised (file:///src)
eio_posix is now pinned to file:///src (version dev)
[eio_main.dev] synchronised (file:///src)
eio_main is now pinned to file:///src (version dev)
[eio_linux.dev] synchronised (file:///src)
eio_linux is now pinned to file:///src (version dev)
[eio.dev] synchronised (file:///src)
eio is now pinned to file:///src (version dev)
2026-01-09 23:57.52 ---> saved as "7adb44c769378d764ef34ca4a0f897201c1c946fca262b1a463d361d1946d94c"


/src: (run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
2026-01-09 23:57.53 ---> saved as "20864f59ad13fd3718db79e70a52708685591c3d289a9b5650cefb9474043c8b"


/src: (env DEPS "afl-persistent.1.4 alcotest.1.9.1 astring.0.8.5 backoff.0.1.1 base-bigarray.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 conf-bash.1 containers.3.16 cppo.1.8.0 crowbar.0.2.2 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 domain-local-timeout.1.0.1 dscheck.0.5.0 dune.3.20.2 dune-configurator.3.20.2 either.1.0.0 fmt.0.11.0 hmap.0.8.1 iomux.0.4 kcas.0.7.0 logs.0.10.0 lwt-dllist.1.1.0 mdx.2.5.1 mtime.2.1.0 multicore-magic.2.3.1 ocaml.5.2.1 ocaml-base-compiler.5.2.1 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.3 ocamlbuild.0.16.1 ocamlfind.1.9.8 optint.0.3.0 oseq.0.5.1 psq.0.2.1 re.1.14.0 result.1.5 seq.base stdlib-shims.0.3.0 thread-table.1.0.0 topkg.1.1.1 tsort.2.2.0 uring.2.7.0 uutf.1.0.4 yojson.3.0.0")


/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 eio_windows.dev eio_posix.dev eio_main.dev eio_linux.dev eio.dev $DEPS"))
+ /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 [94.5 kB]
- Fetched 185 kB in 0s (763 kB/s)
- Reading package lists...
- 


<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[eio.dev] synchronised (file:///src)
[eio_linux.dev] synchronised (file:///src)
[eio_main.dev] synchronised (file:///src)
[eio_posix.dev] synchronised (file:///src)
[eio_windows.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 5.2.1).
[NOTE] Package ocaml is already installed (current version is 5.2.1).
[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).
2026-01-09 23:58.27 ---> saved as "25ab43df272d8fbc1294b893bd533e0576109a84da5bcf7674084319e583e43f"


/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 5.2.1).
[NOTE] Package ocaml is already installed (current version is 5.2.1).
[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 45 packages
- install afl-persistent       1.4
- install alcotest             1.9.1
- install astring              0.8.5
- install backoff              0.1.1
- install bigstringaf          0.10.0
- install camlp-streams        5.0.1
- install cmdliner             2.1.0
- install conf-bash            1
- install containers           3.16
- install cppo                 1.8.0
- install crowbar              0.2.2
- install csexp                1.5.2
- install cstruct              6.2.0
- install domain-local-await   1.0.1
- install domain-local-timeout 1.0.1
- install dscheck              0.5.0
- install dune                 3.20.2
- install dune-configurator    3.20.2
- install either               1.0.0
- install fmt                  0.11.0
- install hmap                 0.8.1
- install iomux                0.4
- install kcas                 0.7.0
- install logs                 0.10.0
- install lwt-dllist           1.1.0
- install mdx                  2.5.1
- install mtime                2.1.0
- install multicore-magic      2.3.1
- install ocaml-syntax-shims   1.0.0
- install ocaml-version        4.0.3
- install ocamlbuild           0.16.1
- install ocamlfind            1.9.8
- install optint               0.3.0
- install oseq                 0.5.1
- install psq                  0.2.1
- install re                   1.14.0
- install result               1.5
- install seq                  base
- install stdlib-shims         0.3.0
- install thread-table         1.0.0
- install topkg                1.1.1
- install tsort                2.2.0
- install uring                2.7.0
- install uutf                 1.0.4
- install yojson               3.0.0


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved afl-persistent.1.4  (cached)
-> retrieved backoff.0.1.1  (cached)
-> retrieved astring.0.8.5  (cached)
-> retrieved bigstringaf.0.10.0  (cached)
-> retrieved camlp-streams.5.0.1  (cached)
-> retrieved alcotest.1.9.1  (cached)
-> retrieved cmdliner.2.1.0  (cached)
-> installed conf-bash.1
-> retrieved cppo.1.8.0  (cached)
-> retrieved crowbar.0.2.2  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved containers.3.16  (cached)
-> retrieved domain-local-await.1.0.1  (cached)
-> retrieved domain-local-timeout.1.0.1  (cached)
-> retrieved cstruct.6.2.0  (cached)
-> retrieved dscheck.0.5.0  (cached)
-> retrieved either.1.0.0  (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 kcas.0.7.0  (cached)
-> retrieved lwt-dllist.1.1.0  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved multicore-magic.2.3.1  (cached)
-> retrieved ocaml-syntax-shims.1.0.0  (cached)
-> retrieved ocaml-version.4.0.3  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved mdx.2.5.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved optint.0.3.0  (cached)
-> retrieved oseq.0.5.1  (cached)
-> retrieved psq.0.2.1  (cached)
-> retrieved re.1.14.0  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved result.1.5  (cached)
-> retrieved stdlib-shims.0.3.0  (cached)
-> retrieved thread-table.1.0.0  (cached)
-> retrieved tsort.2.2.0  (cached)
-> retrieved topkg.1.1.1  (cached)
-> retrieved uutf.1.0.4  (cached)
-> retrieved yojson.3.0.0  (cached)
-> retrieved uring.2.7.0  (cached)
-> retrieved dune.3.20.2, dune-configurator.3.20.2  (cached)
-> installed cmdliner.2.1.0
-> installed ocamlfind.1.9.8
-> installed ocamlbuild.0.16.1
-> installed topkg.1.1.1
-> installed hmap.0.8.1
-> installed mtime.2.1.0
-> installed uutf.1.0.4
-> installed fmt.0.11.0
-> installed astring.0.8.5
-> installed logs.0.10.0
-> installed dune.3.20.2
-> installed backoff.0.1.1
-> installed csexp.1.5.2
-> installed camlp-streams.5.0.1
-> installed cppo.1.8.0
-> installed cstruct.6.2.0
-> installed either.1.0.0
-> installed lwt-dllist.1.1.0
-> installed multicore-magic.2.3.1
-> installed ocaml-syntax-shims.1.0.0
-> installed ocaml-version.4.0.3
-> installed optint.0.3.0
-> installed oseq.0.5.1
-> installed psq.0.2.1
-> installed result.1.5
-> installed stdlib-shims.0.3.0
-> installed thread-table.1.0.0
-> installed tsort.2.2.0
-> installed afl-persistent.1.4
-> installed re.1.14.0
-> installed yojson.3.0.0
-> installed domain-local-timeout.1.0.1
-> installed domain-local-await.1.0.1
-> installed crowbar.0.2.2
-> installed kcas.0.7.0
-> installed alcotest.1.9.1
-> installed dune-configurator.3.20.2
-> installed bigstringaf.0.10.0
-> installed mdx.2.5.1
-> installed iomux.0.4
-> installed containers.3.16
-> installed dscheck.0.5.0
-> installed uring.2.7.0
Done.


<><> afl-persistent.1.4 installed successfully ><><><><><><><><><><><><><><><><>
=> afl-persistent is installed, but since the current OCaml compiler does
not enable AFL instrumentation by default, most packages will not be
instrumented and fuzzing with afl-fuzz may not be effective.


To globally enable AFL instrumentation, create an OCaml switch like:


opam switch create 5.2.1+afl ocaml-variants.5.2.1+options ocaml-option-afl
# Run eval $(opam env) to update the current shell environment
2026-01-10 00:01.32 ---> saved as "3ac28aab165fccb369ef4d9c88f912611072a02934abdbb9331acd6836fe1e40"


/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 3.20.2).
The following actions will be performed:
=== install 6 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]


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved crunch.4.0.0  (cached)
-> retrieved fpath.0.7.3  (cached)
-> retrieved ptime.1.2.0  (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 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
2026-01-10 00:02.18 ---> saved as "1e24fa6bcd12e5536d034b1044c395b593ec09b8d797effa3ea1605d5164df16"


/src: (copy (src .) (dst /src/))
2026-01-10 00:02.20 ---> saved as "531f4f58b6eb61baea8ea64c7dcab31a9e49bdd8fd8b33dc65d73142b5b27723"


/src: (run (shell "ODOC_WARN_ERROR=false opam exec -- dune build @doc || (echo \"dune build @doc failed\"; exit 2)"))
(cd _build/default/_doc/_html && /home/opam/.opam/5.2/bin/odoc link -I ../_odoc/pkg/eio -I ../../lib_eio/.eio.objs/byte -I ../../lib_eio/core/.eio__core.objs/byte -I ../../lib_eio/mock/.eio_mock.objs/byte -I ../../lib_eio/runtime_events/.eio_runtime_events.objs/byte -I ../../lib_eio/unix/.eio_unix.objs/byte -I ../../lib_eio/utils/.eio_utils.objs/byte -o ../_odocls/eio/eio_mock.odocl ../../lib_eio/mock/.eio_mock.objs/byte/eio_mock.odoc)
File "lib_eio/mock/clock.mli", line 20, characters 6-54:
Warning: Failed to resolve reference unresolvedroot(Invalid_argument) Couldn't find "Invalid_argument"
File "lib_eio/mock/clock.mli", line 20, characters 6-54:
Warning: While resolving the expansion of include at File "lib_eio/mock/clock.mli", line 29, character 0
Failed to resolve reference unresolvedroot(Invalid_argument) Couldn't find "Invalid_argument"
File "lib_eio/mock/clock.mli", line 20, characters 6-54:
Warning: Failed to resolve reference unresolvedroot(Invalid_argument) Couldn't find "Invalid_argument"
(cd _build/default/_doc/_html && /home/opam/.opam/5.2/bin/odoc link -I ../_odoc/pkg/eio -I ../../lib_eio/.eio.objs/byte -I ../../lib_eio/core/.eio__core.objs/byte -I ../../lib_eio/mock/.eio_mock.objs/byte -I ../../lib_eio/runtime_events/.eio_runtime_events.objs/byte -I ../../lib_eio/unix/.eio_unix.objs/byte -I ../../lib_eio/utils/.eio_utils.objs/byte -o ../_odocls/eio/eio_unix.odocl ../../lib_eio/unix/.eio_unix.objs/byte/eio_unix.odoc)
File "lib_eio/unix/eio_unix.mli", line 54, characters 81-93:
Warning: Failed to resolve reference unresolvedroot(Thread).t Couldn't find "Thread"
File "lib_eio/unix/net.mli", line 39, characters 18-34:
Warning: Failed to resolve reference unresolvedroot(Unix).sockaddr Couldn't find "Unix"
File "lib_eio/unix/eio_unix.mli", line 30, characters 33-48:
Warning: Failed to resolve reference unresolvedroot(FD) Couldn't find "FD"
File "lib_eio/unix/eio_unix.mli", line 15, characters 23-41:
Warning: Failed to resolve reference unresolvedroot(Unix).file_descr Couldn't find "Unix"
File "lib_eio/unix/fd.mli", line 4, characters 23-41:
Warning: Failed to resolve reference unresolvedroot(Unix).file_descr Couldn't find "Unix"
File "lib_eio/unix/eio_unix.mli", line 12, characters 26-44:
Warning: Failed to resolve reference unresolvedroot(Unix).Unix_error Couldn't find "Unix"
(cd _build/default/_doc/_html && /home/opam/.opam/5.2/bin/odoc link -I ../_odoc/pkg/eio_linux -I ../../lib_eio/.eio.objs/byte -I ../../lib_eio/core/.eio__core.objs/byte -I ../../lib_eio/runtime_events/.eio_runtime_events.objs/byte -I ../../lib_eio/unix/.eio_unix.objs/byte -I ../../lib_eio/utils/.eio_utils.objs/byte -I ../../lib_eio_linux/.eio_linux.objs/byte -o ../_odocls/eio_linux/eio_linux.odocl ../../lib_eio_linux/.eio_linux.objs/byte/eio_linux.odoc)
File "lib_eio_linux/eio_linux.mli", line 4, characters 17-32:
Warning: Failed to resolve reference unresolvedroot(Eio_main).run Couldn't find "Eio_main"
File "lib_eio_linux/low_level.mli", line 310, characters 39-53:
Warning: Failed to resolve reference unresolvedroot(Sys).sigkill Couldn't find "Sys"
File "lib_eio_linux/low_level.mli", line 190, characters 9-25:
Warning: Failed to resolve reference unresolvedroot(Unix).shutdown Couldn't find "Unix"
File "lib_eio_linux/low_level.mli", line 177, characters 9-26:
Warning: Failed to resolve reference unresolvedroot(Unix).ftruncate Couldn't find "Unix"
File "lib_eio_linux/low_level.mli", line 172, characters 9-22:
Warning: Failed to resolve reference unresolvedroot(Unix).fsync Couldn't find "Unix"
File "lib_eio_linux/low_level.mli", line 167, characters 9-22:
Warning: Failed to resolve reference unresolvedroot(Unix).lseek Couldn't find "Unix"
File "lib_eio_linux/low_level.mli", line 124, characters 9-32:
Warning: Failed to resolve reference unresolvedroot(Unix).LargeFile.fstat Couldn't find "Unix"
File "lib_eio_linux/low_level.mli", line 112, characters 4-102:
Warning: Failed to resolve reference unresolvedroot(Unix).Unix_error Couldn't find "Unix"
File "lib_eio_linux/low_level.mli", line 111, characters 4-55:
Warning: Failed to resolve reference unresolvedroot(End_of_file) Couldn't find "End_of_file"
File "lib_eio_linux/low_level.mli", line 82, characters 4-83:
Warning: Failed to resolve reference unresolvedroot(End_of_file) Couldn't find "End_of_file"
File "lib_eio_linux/low_level.mli", line 75, characters 4-64:
Warning: Failed to resolve reference unresolvedroot(End_of_file) Couldn't find "End_of_file"
File "lib_eio_linux/low_level.mli", line 68, characters 8-24:
Warning: Failed to resolve reference unresolvedroot(Uring).openat2 Couldn't find "Uring"
File "lib_eio_linux/eio_linux.mli", line 43, characters 38-53:
Warning: Failed to resolve reference unresolvedroot(Eio_main).run Couldn't find "Eio_main"
File "lib_eio_linux/eio_linux.mli", line 38, characters 8-33:
Warning: Failed to resolve reference unresolvedroot(Uring).set_fixed_buffer Couldn't find "Uring"
File "lib_eio_linux/eio_linux.mli", line 37, characters 9-24:
Warning: Failed to resolve reference unresolvedroot(Uring).create Couldn't find "Uring"
(cd _build/default/_doc/_html && /home/opam/.opam/5.2/bin/odoc link -I ../_odoc/pkg/eio -I ../../lib_eio/.eio.objs/byte -I ../../lib_eio/core/.eio__core.objs/byte -I ../../lib_eio/mock/.eio_mock.objs/byte -I ../../lib_eio/runtime_events/.eio_runtime_events.objs/byte -I ../../lib_eio/unix/.eio_unix.objs/byte -I ../../lib_eio/utils/.eio_utils.objs/byte -o ../_odocls/eio/eio.odocl ../../lib_eio/.eio.objs/byte/eio.odoc)
File "lib_eio/eio.mli", line 12, characters 25-40:
Warning: Failed to resolve reference unresolvedroot(Eio_main).run Couldn't find "Eio_main"
File "lib_eio/core/eio__core.mli", line 644, characters 87-112:
Warning: Failed to resolve reference unresolvedroot(Atomic).compare_and_set Couldn't find "Atomic"
File "lib_eio/core/cells.mli", line 76, characters 56-81:
Warning: Failed to resolve reference unresolvedroot(Atomic).compare_and_set Couldn't find "Atomic"
File "lib_eio/core/cells.mli", line 64, characters 56-81:
Warning: Failed to resolve reference unresolvedroot(Atomic).compare_and_set Couldn't find "Atomic"
File "lib_eio/eio.mli", line 280, characters 35-50:
Warning: Failed to resolve reference unresolvedroot(Eio_main).run Couldn't find "Eio_main"
File "lib_eio/process.mli", line 87, characters 35-50:
Warning: Failed to resolve reference unresolvedroot(Sys).sigkill Couldn't find "Sys"
File "lib_eio/process.mli", line 73, characters 8-14:
Warning: Failed to resolve reference unresolvedroot(Sys) Couldn't find "Sys"
File "lib_eio/file.mli", line 111, characters 9-26:
Warning: Failed to resolve reference unresolvedroot(Unix).ftruncate Couldn't find "Unix"
File "lib_eio/file.mli", line 106, characters 9-22:
Warning: Failed to resolve reference unresolvedroot(Unix).fsync Couldn't find "Unix"
File "lib_eio/file.mli", line 101, characters 9-22:
Warning: Failed to resolve reference unresolvedroot(Unix).lseek Couldn't find "Unix"
File "lib_eio/file.mli", line 86, characters 4-57:
Warning: Failed to resolve reference unresolvedroot(End_of_file) Couldn't find "End_of_file"
File "lib_eio/file.mli", line 13, characters 26-43:
Warning: Failed to resolve reference unresolvedroot(Unix).file_perm Couldn't find "Unix"
File "lib_eio/path.mli", line 154, characters 33-51:
Warning: Failed to resolve reference unresolvedroot(String).compare Couldn't find "String"
File "lib_eio/net.mli", line 306, characters 32-52:
Warning: Failed to resolve reference unresolvedroot(Unix).SO_REUSEPORT Couldn't find "Unix"
File "lib_eio/net.mli", line 305, characters 32-52:
Warning: Failed to resolve reference unresolvedroot(Unix).SO_REUSEADDR Couldn't find "Unix"
File "lib_eio/net.mli", line 285, character 4 to line 286, character 102:
Warning: Failed to resolve reference unresolvedroot(Invalid_argument) Couldn't find "Invalid_argument"
File "lib_eio/net.mli", line 273, characters 31-65:
Warning: Failed to resolve reference unresolvedroot(Domain).recommended_domain_count Couldn't find "Domain"
File "lib_eio/net.mli", line 270, characters 46-62:
Warning: Failed to resolve reference unresolvedroot(Domain) Parent_module: Lookup failure (root module): Domain
File "lib_eio/net.mli", line 218, characters 30-50:
Warning: Failed to resolve reference unresolvedroot(Unix).SO_REUSEPORT Couldn't find "Unix"
File "lib_eio/net.mli", line 216, characters 30-50:
Warning: Failed to resolve reference unresolvedroot(Unix).SO_REUSEADDR Couldn't find "Unix"
File "lib_eio/net.mli", line 169, characters 4-81:
Warning: Failed to resolve reference unresolvedroot(Invalid_argument) Couldn't find "Invalid_argument"
File "lib_eio/net.mli", line 164, characters 4-81:
Warning: Failed to resolve reference unresolvedroot(Invalid_argument) Couldn't find "Invalid_argument"
File "lib_eio/net.mli", line 82, characters 6-62:
Warning: Failed to resolve reference unresolvedroot(Invalid_argument) Couldn't find "Invalid_argument"
File "lib_eio/buf_write.mli", line 303, characters 4-73:
Warning: Failed to resolve reference unresolvedroot(End_of_file) Couldn't find "End_of_file"
File "lib_eio/buf_write.mli", line 146, characters 8-25:
Warning: Failed to resolve reference unresolvedroot(Bigstring).blit Couldn't find "Bigstring"
File "lib_eio/buf_read.mli", line 302, characters 4-72:
Warning: Failed to resolve reference unresolvedroot(End_of_file) Couldn't find "End_of_file"
File "lib_eio/buf_read.mli", line 216, characters 4-18:
Warning: Failed to resolve reference unresolvedroot(Seq).memoize Couldn't find "Seq"
File "lib_eio/buf_read.mli", line 205, characters 4-45:
Warning: Failed to resolve reference unresolvedroot(Failure) Couldn't find "Failure"
File "lib_eio/buf_read.mli", line 110, characters 4-56:
Warning: Failed to resolve reference unresolvedroot(Failure) Couldn't find "Failure"
File "lib_eio/buf_read.mli", line 97, characters 4-46:
Warning: Failed to resolve reference unresolvedroot(Failure) Couldn't find "Failure"
File "lib_eio/buf_read.mli", line 23, characters 4-75:
Warning: Failed to resolve reference unresolvedroot(End_of_file) Couldn't find "End_of_file"
File "lib_eio/buf_read.mli", line 22, characters 4-68:
Warning: Failed to resolve reference unresolvedroot(Failure) Couldn't find "Failure"
File "lib_eio/flow.mli", line 49, characters 4-57:
Warning: While resolving the expansion of include at File "lib_eio/eio.mli", line 147, character 2
Failed to resolve reference unresolvedroot(End_of_file) Couldn't find "End_of_file"
File "lib_eio/flow.mli", line 45, characters 4-55:
Warning: While resolving the expansion of include at File "lib_eio/eio.mli", line 147, character 2
Failed to resolve reference unresolvedroot(End_of_file) Couldn't find "End_of_file"
File "lib_eio/eio.mli", line 138, characters 10-25:
Warning: Failed to resolve reference unresolvedroot(Eio_main).run Couldn't find "Eio_main"
File "lib_eio/core/eio__core.mli", line 466, characters 25-35:
Warning: Failed to resolve reference unresolvedroot(Fmt).exn Couldn't find "Fmt"
File "lib_eio/core/eio__core.mli", line 422, characters 24-42:
Warning: Failed to resolve reference unresolvedroot(Unix).Unix_error Couldn't find "Unix"
File "lib_eio/executor_pool.mli", line 41, characters 70-104:
Warning: Failed to resolve reference unresolvedroot(Domain).recommended_domain_count Couldn't find "Domain"
File "lib_eio/eio_mutex.mli", line 3, characters 11-26:
Warning: Failed to resolve reference unresolvedroot(Stdlib).Mutex Couldn't find "Stdlib"
File "lib_eio/eio_mutex.mli", line 59, characters 4-47:
Warning: Failed to resolve reference unresolvedroot(Sys_error) Couldn't find "Sys_error"
File "lib_eio/semaphore.mli", line 20, characters 4-75:
Warning: Failed to resolve reference unresolvedroot(Sys_error) Couldn't find "Sys_error"
File "lib_eio/semaphore.mli", line 15, characters 4-38:
Warning: Failed to resolve reference unresolvedroot(Invalid_argument) Couldn't find "Invalid_argument"
File "lib_eio/core/eio__core.mli", line 168, characters 6-57:
Warning: Failed to resolve reference unresolvedroot(Invalid_argument) Couldn't find "Invalid_argument"
File "lib_eio/core/eio__core.mli", line 281, characters 59-69:
Warning: Failed to resolve reference unresolvedroot(Seq).Nil Couldn't find "Seq"
(cd _build/default/_doc/_html && /home/opam/.opam/5.2/bin/odoc link -I ../_odoc/pkg/eio_posix -I ../../lib_eio/.eio.objs/byte -I ../../lib_eio/core/.eio__core.objs/byte -I ../../lib_eio/runtime_events/.eio_runtime_events.objs/byte -I ../../lib_eio/unix/.eio_unix.objs/byte -I ../../lib_eio/utils/.eio_utils.objs/byte -I ../../lib_eio_posix/.eio_posix.objs/byte -o ../_odocls/eio_posix/eio_posix.odocl ../../lib_eio_posix/.eio_posix.objs/byte/eio_posix.odoc)
File "lib_eio_posix/low_level.mli", line 10, characters 16-34:
Warning: Failed to resolve reference unresolvedroot(Unix).file_descr Couldn't find "Unix"
File "lib_eio_posix/low_level.mli", line 134, characters 39-53:
Warning: Failed to resolve reference unresolvedroot(Sys).sigkill Couldn't find "Sys"
File "lib_eio_posix/eio_posix.mli", line 9, characters 38-53:
Warning: Failed to resolve reference unresolvedroot(Eio_main).run Couldn't find "Eio_main"
2026-01-10 00:02.24 ---> saved as "95e9da291eac5357792d67a86ec058cc622f7889a9d0ce47b9e07620003a660f"
Job succeeded
2026-01-10 00:02.25: Job succeeded