Organisationsocaml-multicoreeio654ca6 ()fedora-42-5.3_opam-2.3

fedora-42-5.3_opam-2.3

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2025-05-15 13:38.49: New job: test ocaml-multicore/eio https://github.com/ocaml-multicore/eio.git#refs/pull/796/head (654ca6c40a5309fef22390488a955a84e099c2b9) (linux-x86_64:fedora-42-5.3_opam-2.3)
Base: ocaml/opam:fedora-42-ocaml-5.3@sha256:340ef8413fe195bbf54fd669127e946ef9bf60ec9b789cfee1f165e261f69373
Opam project build


To reproduce locally:


git clone --recursive "https://github.com/ocaml-multicore/eio.git" && cd "eio" && git fetch origin "refs/pull/796/head" && git reset --hard 654ca6c4
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:fedora-42-ocaml-5.3@sha256:340ef8413fe195bbf54fd669127e946ef9bf60ec9b789cfee1f165e261f69373
# fedora-42-5.3_opam-2.3
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
WORKDIR /src
RUN sudo dnf install -y findutils
RUN sudo ln -f /usr/bin/opam-2.3 /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 43251244857e0b885b9fce935584448f4fca0dcb || git fetch origin master) && git reset -q --hard 43251244857e0b885b9fce935584448f4fca0dcb && 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.1.9.0 astring.0.8.5 backoff.0.1.1 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigstringaf.0.10.0 camlp-streams.5.0.1 cmdliner.1.3.0 conf-bash.1 containers.3.15 cppo.1.8.0 crowbar.0.2.1 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.3.18.2 dune-configurator.3.18.2 either.1.0.0 fmt.0.10.0 hmap.0.8.1 iomux.0.3 kcas.0.7.0 logs.0.8.0 lwt-dllist.1.1.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 ocaml.5.3.0 ocaml-base-compiler.5.3.0 ocaml-compiler.5.3.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.0 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 oseq.0.5.1 psq.0.2.1 re.1.12.0 result.1.5 seq.base stdlib-shims.0.3.0 thread-table.1.0.0 topkg.1.0.8 tsort.2.2.0 uring.0.9 uutf.1.0.4 yojson.2.2.2"
ENV CI="true"
ENV OCAMLCI="true"
RUN opam update --depexts && opam install --cli=2.3 --depext-only -y eio_windows.dev eio_posix.dev eio_main.dev eio_linux.dev eio.dev $DEPS
RUN opam install $DEPS
COPY --chown=1000:1000 . /src
RUN opam exec -- dune build @install @check @runtest && rm -rf _build


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


2025-05-15 13:38.49: Using cache hint "ocaml-multicore/eio-ocaml/opam:fedora-42-ocaml-5.3@sha256:340ef8413fe195bbf54fd669127e946ef9bf60ec9b789cfee1f165e261f69373-fedora-42-5.3_opam-2.3-e6c7daf0f2aea12c696c52e7c862b9c8"
2025-05-15 13:38.49: Using OBuilder spec:
((from ocaml/opam:fedora-42-ocaml-5.3@sha256:340ef8413fe195bbf54fd669127e946ef9bf60ec9b789cfee1f165e261f69373)
(comment fedora-42-5.3_opam-2.3)
(user (uid 1000) (gid 1000))
(env CLICOLOR_FORCE 1)
(env OPAMCOLOR always)
(workdir /src)
(run (network host)
(shell "sudo dnf install -y findutils"))
(run (shell "sudo ln -f /usr/bin/opam-2.3 /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 43251244857e0b885b9fce935584448f4fca0dcb || git fetch origin master) && git reset -q --hard 43251244857e0b885b9fce935584448f4fca0dcb && 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.1.9.0 astring.0.8.5 backoff.0.1.1 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigstringaf.0.10.0 camlp-streams.5.0.1 cmdliner.1.3.0 conf-bash.1 containers.3.15 cppo.1.8.0 crowbar.0.2.1 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.3.18.2 dune-configurator.3.18.2 either.1.0.0 fmt.0.10.0 hmap.0.8.1 iomux.0.3 kcas.0.7.0 logs.0.8.0 lwt-dllist.1.1.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 ocaml.5.3.0 ocaml-base-compiler.5.3.0 ocaml-compiler.5.3.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.0 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 oseq.0.5.1 psq.0.2.1 re.1.12.0 result.1.5 seq.base stdlib-shims.0.3.0 thread-table.1.0.0 topkg.1.0.8 tsort.2.2.0 uring.0.9 uutf.1.0.4 yojson.2.2.2")
(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=2.3 --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"))
(copy (src .) (dst /src))
(run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
)


2025-05-15 13:38.49: Waiting for resource in pool OCluster
2025-05-15 13:51.11: Waiting for worker…
2025-05-15 13:58.28: Got resource from pool OCluster
Building on doris.caelum.ci.dev
All commits already cached
HEAD is now at 654ca6c Introduce Buf_write.of_flow


(from ocaml/opam:fedora-42-ocaml-5.3@sha256:340ef8413fe195bbf54fd669127e946ef9bf60ec9b789cfee1f165e261f69373)
2025-05-15 13:58.29 ---> using "58e80f2943667cc892930b8f00145b341640b9631e46b0e990690977929d47d4" from cache


/: (comment fedora-42-5.3_opam-2.3)


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


/: (env CLICOLOR_FORCE 1)


/: (env OPAMCOLOR always)


/: (workdir /src)


/src: (run (network host)
(shell "sudo dnf install -y findutils"))
Updating and loading repositories:
Fedora 42 - x86_64 - Updates           100% |  54.4 KiB/s |  18.8 KiB |  00m00s
Fedora 42 - x86_64 - Updates           100% |   5.1 MiB/s |   2.2 MiB |  00m00s
Repositories loaded.
Package "findutils-1:4.10.0-5.fc42.x86_64" is already installed.


Nothing to do.
2025-05-15 13:58.29 ---> using "5e75f4f90bede632f1905a7c2c6dd18b38094c39f21cf56cfd80e66f2a5ea1fb" from cache


/src: (run (shell "sudo ln -f /usr/bin/opam-2.3 /usr/bin/opam"))
2025-05-15 13:58.29 ---> using "99c48dd0c90841dd0557a3605ead22147b57247e14e3720a707113a3fd5cb79d" 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
[NOTE] The 'jobs' option was reset, its value was 71 and its new value will vary according to the current number of cores on your machine. You can restore the fixed value using:
opam option jobs=71 --global
Format upgrade done.


<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2025-05-15 13:58.29 ---> using "f466099dbad0be430d5d88b3056e1b5546981294ac309650866ef1379cd6d212" from cache


/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Linux 5.15.0-134-generic
The OCaml toplevel, version 5.3.0
2.3.0
2025-05-15 13:58.29 ---> using "9495bb6675cefd0fde9c3d3172875d2f69d43b4b48aa2c1fc3cbbdc7685c23a4" from cache


/src: (workdir /src)


/src: (run (shell "sudo chown opam /src"))
2025-05-15 13:58.29 ---> using "32bd88dfd4a72ae99f6d3d856e0c727304b5b119984d04b7c88a6f9d56b49fb7" from cache


/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
(network host)
(shell "cd ~/opam-repository && (git cat-file -e 43251244857e0b885b9fce935584448f4fca0dcb || git fetch origin master) && git reset -q --hard 43251244857e0b885b9fce935584448f4fca0dcb && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
* branch                  master     -> FETCH_HEAD
0d013e603b..8efeb9aa26  master     -> origin/master
4325124485 Merge pull request #27868 from shonfeder/mark-iomux-unavailable-on-windows


<><> 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.
# To update the current shell environment, run: eval $(opam env)
2025-05-15 13:58.29 ---> using "631d55202f4d999377b87a6d5ccdd8888d5805dc18b94634951d256cbbfbc261" from cache


/src: (copy (src eio_windows.opam eio_posix.opam eio_main.opam eio_linux.opam eio.opam)
(dst ./))
2025-05-15 13:58.29 ---> using "fc9eb0c07274295d348f58a9b78881a63f7cc86088114b943f36e04c26bfc06c" from cache


/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)
2025-05-15 13:58.29 ---> using "18a985279563ee9f33282d0a6f0d7963768bbc8474eb6fa856090135f2f4a6f5" from cache


/src: (run (network host)
(shell "echo '(lang dune 3.0)' > './dune-project'"))
2025-05-15 13:58.29 ---> using "b282fc9537e8ee320ff4f6909f2dcea6b4d2c140f58f91eded22561b605d2eb2" from cache


/src: (env DEPS "afl-persistent.1.4 alcotest.1.9.0 astring.0.8.5 backoff.0.1.1 base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base bigstringaf.0.10.0 camlp-streams.5.0.1 cmdliner.1.3.0 conf-bash.1 containers.3.15 cppo.1.8.0 crowbar.0.2.1 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.3.18.2 dune-configurator.3.18.2 either.1.0.0 fmt.0.10.0 hmap.0.8.1 iomux.0.3 kcas.0.7.0 logs.0.8.0 lwt-dllist.1.1.0 mdx.2.5.0 mtime.2.1.0 multicore-magic.2.3.1 ocaml.5.3.0 ocaml-base-compiler.5.3.0 ocaml-compiler.5.3.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.4.0.0 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 oseq.0.5.1 psq.0.2.1 re.1.12.0 result.1.5 seq.base stdlib-shims.0.3.0 thread-table.1.0.0 topkg.1.0.8 tsort.2.2.0 uring.0.9 uutf.1.0.4 yojson.2.2.2")


/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=2.3 --depext-only -y eio_windows.dev eio_posix.dev eio_main.dev eio_linux.dev eio.dev $DEPS"))
+ /usr/sbin/sudo "yum" "makecache"
- Updating and loading repositories:
- Repositories loaded.
- Metadata cache created.


<><> 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-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml is already installed (current version is 5.3.0).
[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-effects 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).
2025-05-15 13:58.29 ---> using "080bf19f2c7b12579e7ece493253089c90bd5c91dec0c486651f0a90bf546f13" from cache


/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-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml-base-compiler is already installed (current version is 5.3.0).
[NOTE] Package ocaml is already installed (current version is 5.3.0).
[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-effects 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 47 packages
- install afl-persistent       1.4
- install alcotest             1.9.0
- install astring              0.8.5
- install backoff              0.1.1
- install base-bytes           base
- install bigstringaf          0.10.0
- install camlp-streams        5.0.1
- install cmdliner             1.3.0
- install conf-bash            1
- install containers           3.15
- install cppo                 1.8.0
- install crowbar              0.2.1
- 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                 3.18.2
- install dune-configurator    3.18.2
- install either               1.0.0
- install fmt                  0.10.0
- install hmap                 0.8.1
- install iomux                0.3
- install kcas                 0.7.0
- install logs                 0.8.0
- install lwt-dllist           1.1.0
- install mdx                  2.5.0
- install mtime                2.1.0
- install multicore-magic      2.3.1
- install ocaml-syntax-shims   1.0.0
- install ocaml-version        4.0.0
- install ocamlbuild           0.16.1
- install ocamlfind            1.9.8
- install ocplib-endian        1.2
- install optint               0.3.0
- install oseq                 0.5.1
- install psq                  0.2.1
- install re                   1.12.0
- install result               1.5
- install seq                  base
- install stdlib-shims         0.3.0
- install thread-table         1.0.0
- install topkg                1.0.8
- install tsort                2.2.0
- install uring                0.9
- install uutf                 1.0.4
- install yojson               2.2.2


<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved afl-persistent.1.4  (cached)
-> retrieved backoff.0.1.1  (cached)
-> retrieved astring.0.8.5  (cached)
-> retrieved alcotest.1.9.0  (cached)
-> retrieved bigstringaf.0.10.0  (cached)
-> retrieved camlp-streams.5.0.1  (cached)
-> installed conf-bash.1
-> retrieved cmdliner.1.3.0  (cached)
-> retrieved cppo.1.8.0  (cached)
-> retrieved crowbar.0.2.1  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved domain-local-await.1.0.1  (cached)
-> retrieved domain-local-timeout.1.0.1  (cached)
-> retrieved dscheck.0.5.0  (cached)
-> retrieved containers.3.15  (cached)
-> retrieved cstruct.6.2.0  (cached)
-> retrieved either.1.0.0  (cached)
-> retrieved hmap.0.8.1  (cached)
-> retrieved fmt.0.10.0  (cached)
-> retrieved iomux.0.3  (cached)
-> retrieved kcas.0.7.0  (cached)
-> retrieved logs.0.8.0  (cached)
-> retrieved lwt-dllist.1.1.0  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved multicore-magic.2.3.1  (cached)
-> retrieved mdx.2.5.0  (cached)
-> retrieved ocaml-syntax-shims.1.0.0  (cached)
-> retrieved ocaml-version.4.0.0  (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 oseq.0.5.1  (cached)
-> retrieved psq.0.2.1  (cached)
-> retrieved result.1.5  (cached)
-> retrieved seq.base  (cached)
-> installed seq.base
-> retrieved re.1.12.0  (cached)
-> retrieved stdlib-shims.0.3.0  (cached)
-> retrieved thread-table.1.0.0  (cached)
-> retrieved tsort.2.2.0  (cached)
-> retrieved dune.3.18.2, dune-configurator.3.18.2  (cached)
-> retrieved topkg.1.0.8  (cached)
-> retrieved uring.0.9  (cached)
-> retrieved uutf.1.0.4  (cached)
-> retrieved yojson.2.2.2  (cached)
-> installed cmdliner.1.3.0
-> installed ocamlbuild.0.16.1
-> installed ocamlfind.1.9.8
-> installed base-bytes.base
-> installed topkg.1.0.8
-> installed hmap.0.8.1
-> installed uutf.1.0.4
-> installed mtime.2.1.0
-> installed fmt.0.10.0
-> installed astring.0.8.5
-> installed logs.0.8.0
-> installed dune.3.18.2
-> installed lwt-dllist.1.1.0
-> installed csexp.1.5.2
-> installed backoff.0.1.1
-> installed camlp-streams.5.0.1
-> installed cppo.1.8.0
-> installed cstruct.6.2.0
-> installed either.1.0.0
-> installed multicore-magic.2.3.1
-> installed ocaml-syntax-shims.1.0.0
-> installed ocaml-version.4.0.0
-> installed optint.0.3.0
-> installed oseq.0.5.1
-> installed psq.0.2.1
-> installed re.1.12.0
-> installed result.1.5
-> installed stdlib-shims.0.3.0
-> installed thread-table.1.0.0
-> installed tsort.2.2.0
-> installed yojson.2.2.2
-> installed afl-persistent.1.4
-> installed ocplib-endian.1.2
-> installed domain-local-timeout.1.0.1
-> installed domain-local-await.1.0.1
-> installed crowbar.0.2.1
-> installed kcas.0.7.0
-> installed alcotest.1.9.0
-> installed dune-configurator.3.18.2
-> installed bigstringaf.0.10.0
-> installed iomux.0.3
-> installed mdx.2.5.0
-> installed containers.3.15
-> installed uring.0.9
-> installed dscheck.0.5.0
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 5.3.0+afl ocaml-variants.5.3.0+options ocaml-option-afl
# To update the current shell environment, run: eval $(opam env)
2025-05-15 13:58.58 ---> saved as "7dd1f370d6496cce851d9a91ad58f84d7b3c852a82b1b796bd9cef14a233f59c"


/src: (copy (src .) (dst /src))
2025-05-15 13:58.59 ---> saved as "f678a5e0576938bf0b976c2c8b15d5aec69a857472a91d905f3ef2a104bb4ad8"


/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))
(cd _build/default/fuzz && ./fuzz_inherit_fds.exe)
inherit_fds: PASS


File "fuzz/dune", line 4, characters 23-37:
4 |   (names fuzz_buf_read fuzz_buf_write fuzz_inherit_fds))
^^^^^^^^^^^^^^
(cd _build/default/fuzz && ./fuzz_buf_write.exe)
random ops: FAIL


When given the input:


[[#2 schedule_cstruct:""]; false]


the test threw an exception:


Eio_mock__Backend.Deadlock_detected
Raised at Eio_mock__Backend.run_full in file "lib_eio/mock/backend.ml", line 112, characters 12-35
Called from Crowbar.gen_apply.go.(fun) in file "src/crowbar.ml", line 325, characters 16-19


(cd _build/default/fuzz && ./fuzz_buf_read.exe)
random ops: PASS


File "lib_eio_linux/tests/dune", line 42, characters 7-11:
42 |  (name test)
^^^^
(cd _build/default/lib_eio_linux/tests && ./test.exe)
Testing `eio_linux'.
This run has ID `OKZGXPO8'.


[OK]          io          0   copy.
[OK]          io          1   direct_copy.
[OK]          io          2   poll_add.
[OK]          io          3   poll_add_busy.
[OK]          io          4   iovec.
[OK]          io          5   no_sqe.
[SKIP]        io          6   read_exact.
[OK]          io          7   expose_backend.
[OK]          io          8   statx.
[OK]          io          9   signal_race.
[FAIL]        io         10   alloc-fixed-or-wait.


┌──────────────────────────────────────────────────────────────────────────────┐
[FAIL]        io         10   alloc-fixed-or-wait.
└──────────────────────────────────────────────────────────────────────────────┘
[failure] No fixed buffer available
Raised at Stdlib.failwith in file "stdlib.ml", line 29, characters 17-33
Called from Dune__exe__Test.test_alloc_fixed_or_wait.(fun) in file "lib_eio_linux/tests/test.ml", line 216, characters 14-56
Called from Eio_unix__Thread_pool.run in file "lib_eio/unix/thread_pool.ml", line 108, characters 8-13
Re-raised at Eio_unix__Thread_pool.run in file "lib_eio/unix/thread_pool.ml", line 113, characters 4-39
Called from Eio_linux__Sched.run.(fun) in file "lib_eio_linux/sched.ml", line 468, characters 22-90
Re-raised at Eio_linux__Sched.run in file "lib_eio_linux/sched.ml", line 479, characters 22-57
Called from Eio_linux__Sched.with_eventfd in file "lib_eio_linux/sched.ml", line 506, characters 8-18
Re-raised at Eio_linux__Sched.with_eventfd in file "lib_eio_linux/sched.ml", line 511, characters 4-39
Called from Eio_linux__Sched.with_sched in file "lib_eio_linux/sched.ml", lines 543-545, characters 8-109
Re-raised at Eio_linux__Sched.with_sched in file "lib_eio_linux/sched.ml", line 556, characters 8-43
Called from Alcotest_engine__Core.Make.protect_test.(fun) in file "src/alcotest-engine/core.ml", line 186, characters 17-23
Called from Alcotest_engine__Monad.Identity.catch in file "src/alcotest-engine/monad.ml", line 24, characters 31-35


Logs saved to `/src/_build/default/lib_eio_linux/tests/_build/_tests/eio_linux/io.010.output'.
──────────────────────────────────────────────────────────────────────────────


Full test results in `/src/_build/default/lib_eio_linux/tests/_build/_tests/eio_linux'.
1 failure! in 0.005s. 10 tests run.
File "tests/buf_write.md", line 1, characters 0-0:
/usr/sbin/git --no-pager diff --no-index --color=always -u _build/default/tests/buf_write.md _build/default/tests/.mdx/buf_write.md.corrected
diff --git a/_build/default/tests/buf_write.md b/_build/default/tests/.mdx/buf_write.md.corrected
index a5855d7..13e02ea 100644
--- a/_build/default/tests/buf_write.md
+++ b/_build/default/tests/.mdx/buf_write.md.corrected
@@ -17,7 +17,7 @@ let flow = Eio_mock.Flow.make "flow"
Write.with_flow flow @@ fun w ->
Write.string w "Hello"; Write.char w ' '; Write.string w "world";;
+flow: wrote "Hello world"
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Auto-commit
@@ -32,7 +32,7 @@ If we yield then we flush the data so far:
Write.string w "world";;
+flow: wrote "Hello "
+flow: wrote "world"
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Read source buffer
@@ -47,7 +47,7 @@ If supported by the flow, we can avoid copying:
Write.schedule_cstruct w (Cstruct.of_string "world");
Write.char w '!';;
+flow: wrote ["Hello "; "world"; "!"]
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Pausing
@@ -62,7 +62,7 @@ Without pausing:
Write.string w "world";;
+flow: wrote "Hello... "
+flow: wrote "world"
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


With pausing
@@ -76,7 +76,7 @@ With pausing
Write.unpause w;
Write.string w "world";;
+flow: wrote ["Hello... "; "world"]
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Empty writes
@@ -88,7 +88,7 @@ With pausing
Write.bytes t (Bytes.make 0 '\000');
Write.cstruct t Cstruct.empty;
Write.schedule_cstruct t Cstruct.empty;;
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Endianness
@@ -101,7 +101,7 @@ With pausing
Write.BE.uint16 t 5;;
+flow: wrote "\005\000"
+flow: wrote "\000\005"
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Writes
@@ -120,7 +120,7 @@ With pausing
+flow: wrote "test"
+flow: wrote "test"
+flow: wrote "A"
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Multiple writes
@@ -141,9 +141,7 @@ With pausing
Write.with_flow ~initial_size:1 flow f;;
+With room:
+flow: wrote "testtestte"
-+Without room:
-+flow: wrote ["te"; "st"; "te"; "st"; "te"]
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Formatting
@@ -181,7 +179,7 @@ With pausing
+flow: wrote "tcp:[::1]:8080This is a second call to printf\n"
+            "\n"
+flow: wrote "Flushed. Goodbye\n"
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Flushing
@@ -214,7 +212,7 @@ Eio_mock.Flow.on_copy_bytes flow [
+flow: wrote "Hel"
+flow: wrote "lo"
+Flushed
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


Multiple flushes:
@@ -242,7 +240,7 @@ Multiple flushes:
+flow: wrote "f"
+3rd flush
+Done
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


Check flush waits for the write to succeed:
@@ -278,7 +276,7 @@ let slow_writer =
traceln "Flush complete"
+Write "test"
+Flush complete
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Scheduling
@@ -299,7 +297,7 @@ let slow_writer =
+flow: wrote ["one"; "two"]
+flow: wrote "end"
+Should all be flushed by now.
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Cancellation
@@ -339,7 +337,7 @@ Exception: Failure "Simulated error".
Write.with_flow flow @@ fun t ->
try Write.string t "hi" ~off:100; assert false
with Invalid_argument _ -> ();;
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


## Serialize
@@ -399,8 +397,6 @@ We still flush the output on error:
Write.string t "foo";
failwith "Simulated error";;
+flow: wrote "f"
-+flow: wrote "o"
-+flow: wrote "o"
Exception: Failure "Simulated error".
```


@@ -480,7 +476,7 @@ But the flush does succeed in the normal case:
+flow: wrote "fo"
+flow: wrote "o"
+Flush succeeded
-- : unit = ()
+Exception: Eio_mock__Backend.Deadlock_detected.
```


If we don't pass a switch then we can still cancel flushes manually:
2025-05-15 14:58.28: Cancelling: Timeout (60.0 minutes)
Job cancelled
2025-05-15 14:58.29: Timeout (60.0 minutes)