macos-homebrew-5.2_opam-2.2

2024-10-31 08:12.37: New job: test ocaml-multicore/eio https://github.com/ocaml-multicore/eio.git#refs/pull/772/head (554a815774e9394d60e9da2abb4ea0e0a5e205db) (macos-x86_64:macos-homebrew-5.2_opam-2.2)
Base: macos-homebrew-ocaml-5.2
Opam project build

To reproduce locally:

git clone --recursive "https://github.com/ocaml-multicore/eio.git" && cd "eio" && git fetch origin "refs/pull/772/head" && git reset --hard 554a8157
cat > Dockerfile <<'END-OF-DOCKERFILE'
FROM macos-homebrew-ocaml-5.2
# macos-homebrew-5.2_opam-2.2
USER 1000:1000
ENV CLICOLOR_FORCE="1"
ENV OPAMCOLOR="always"
RUN ln -f ~/local/bin/opam-2.2 ~/local/bin/opam
RUN opam init --reinit -ni
RUN uname -rs && opam exec -- ocaml -version && opam --version
RUN cd ~/opam-repository && (git cat-file -e b876d7d37014df697368765c088aa86d24dc8b6b || git fetch origin master) && git reset -q --hard b876d7d37014df697368765c088aa86d24dc8b6b && 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 ./src/./
RUN opam pin add -yn eio_windows.dev './src/./' && \
    opam pin add -yn eio_posix.dev './src/./' && \
    opam pin add -yn eio_main.dev './src/./' && \
    opam pin add -yn eio_linux.dev './src/./' && \
    opam pin add -yn eio.dev './src/./'
ENV DEPS="afl-persistent.1.4 alcotest.1.8.0 astring.0.8.5 backoff.0.1.1 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.1.3.0 containers.3.14 cppo.1.7.0 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.3.16.0 dune-configurator.3.16.0 either.1.0.0 fmt.0.9.0 hmap.0.8.1 host-arch-x86_64.1 host-system-other.1 iomux.0.3 kcas.0.7.0 logs.0.7.0 lwt-dllist.1.0.1 mdx.2.4.1 mtime.2.1.0 multicore-magic.2.3.0 ocaml.5.2.0 ocaml-base-compiler.5.2.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.3.6.9 ocamlbuild.0.15.0 ocamlfind.1.9.6 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.1.0.7 tsort.2.1.0 uutf.1.0.3 yojson.2.2.2"
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.dev $DEPS
RUN opam install $DEPS
COPY --chown=1000:1000 . ./src
RUN cd ./src && opam exec -- dune build --only-packages=eio_windows,eio_posix,eio_main,eio @install @check @runtest && rm -rf _build

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

2024-10-31 08:12.37: Using cache hint "ocaml-multicore/eio-macos-homebrew-ocaml-5.2-macos-homebrew-5.2_opam-2.2-3f3d2dd7512985b89712e94a1a0f9539"
2024-10-31 08:12.37: Using OBuilder spec:
((from macos-homebrew-ocaml-5.2)
 (comment macos-homebrew-5.2_opam-2.2)
 (user (uid 1000) (gid 1000))
 (env CLICOLOR_FORCE 1)
 (env OPAMCOLOR always)
 (run (shell "ln -f ~/local/bin/opam-2.2 ~/local/bin/opam"))
 (run (shell "opam init --reinit -ni"))
 (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
 (run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
      (network host)
      (shell "cd ~/opam-repository && (git cat-file -e b876d7d37014df697368765c088aa86d24dc8b6b || git fetch origin master) && git reset -q --hard b876d7d37014df697368765c088aa86d24dc8b6b && 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 ./src/./))
 (run (network host)
      (shell  "opam pin add -yn eio_windows.dev './src/./' && \
             \nopam pin add -yn eio_posix.dev './src/./' && \
             \nopam pin add -yn eio_main.dev './src/./' && \
             \nopam pin add -yn eio_linux.dev './src/./' && \
             \nopam pin add -yn eio.dev './src/./'"))
 (env DEPS "afl-persistent.1.4 alcotest.1.8.0 astring.0.8.5 backoff.0.1.1 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.1.3.0 containers.3.14 cppo.1.7.0 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.3.16.0 dune-configurator.3.16.0 either.1.0.0 fmt.0.9.0 hmap.0.8.1 host-arch-x86_64.1 host-system-other.1 iomux.0.3 kcas.0.7.0 logs.0.7.0 lwt-dllist.1.0.1 mdx.2.4.1 mtime.2.1.0 multicore-magic.2.3.0 ocaml.5.2.0 ocaml-base-compiler.5.2.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.3.6.9 ocamlbuild.0.15.0 ocamlfind.1.9.6 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.1.0.7 tsort.2.1.0 uutf.1.0.3 yojson.2.2.2")
 (env CI true)
 (env OCAMLCI true)
 (run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
      (network host)
      (shell "opam update --depexts && opam install --cli=2.2 --depext-only -y eio_windows.dev eio_posix.dev eio_main.dev eio.dev $DEPS"))
 (run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
      (network host)
      (shell "opam install $DEPS"))
 (copy (src .) (dst ./src))
 (run (shell "cd ./src && opam exec -- dune build --only-packages=eio_windows,eio_posix,eio_main,eio @install @check @runtest && rm -rf _build"))
)

2024-10-31 08:12.37: Waiting for resource in pool OCluster
2024-10-31 08:12.37: Waiting for worker…
2024-10-31 08:12.37: Got resource from pool OCluster
Building on i7-worker-02
HEAD is now at dc2a544 Switch test
HEAD is now at 554a815 Update fs.ml

(from macos-homebrew-ocaml-5.2)
2024-10-31 08:12.44 ---> using "9b46fe3d2429f2b9195a02468cb57ac45cfa11fb4a87cb32b5e5375232223327" from cache

/: (comment macos-homebrew-5.2_opam-2.2)

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

/: (env CLICOLOR_FORCE 1)

/: (env OPAMCOLOR always)

/: (run (shell "ln -f ~/local/bin/opam-2.2 ~/local/bin/opam"))
2024-10-31 08:12.45 ---> using "b003627c18f5d873361872ecfa38a9a8b5c86cc26245bef1d152887064c98071" from cache

/: (run (shell "opam init --reinit -ni"))
No configuration file found, using 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 /Users/mac1000/.opam from version 2.1 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 1 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=1 --global
Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] no changes from git+file:///Users/mac1000/opam-repository
2024-10-31 08:12.45 ---> using "408d2cc158c17e89759cf51b146539f00642e287086d5c54f85c33dae9e6a1f9" from cache

/: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))
Darwin 23.4.0
The OCaml toplevel, version 5.2.0
2.2.1
2024-10-31 08:12.45 ---> using "80c5626e56c363c9237b2d67b74b9ac64751c52cd041543c0fda73b45b911c9a" from cache

/: (run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
        (network host)
        (shell "cd ~/opam-repository && (git cat-file -e b876d7d37014df697368765c088aa86d24dc8b6b || git fetch origin master) && git reset -q --hard b876d7d37014df697368765c088aa86d24dc8b6b && git log --no-decorate -n1 --oneline && opam update -u"))
From https://github.com/ocaml/opam-repository
 * branch                  master     -> FETCH_HEAD
   5e7a27da27..ac01ad6037  master     -> origin/master
b876d7d370 Merge pull request #26641 from polytypic/release-backoff-0.1.1

<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>
[default] synchronised from git+file:///Users/mac1000/opam-repository

Everything as up-to-date as possible (run with --verbose to show unavailable upgrades).

The following packages are not being upgraded because the new versions conflict with other installed packages:
  - ocaml.5.4.0
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
2024-10-31 08:12.45 ---> using "98bc6638e16fe9ec96dc30070dd9cbcf40247b38f42b88985b91e30f437171fd" from cache

/: (copy (src eio_windows.opam eio_posix.opam eio_main.opam eio_linux.opam eio.opam)
         (dst ./src/./))
2024-10-31 08:12.46 ---> using "384eee635680942eaaecd77c8eb042ab490a7ee6429b1dcab54d63574d737184" from cache

/: (run (network host)
        (shell  "opam pin add -yn eio_windows.dev './src/./' && \
               \nopam pin add -yn eio_posix.dev './src/./' && \
               \nopam pin add -yn eio_main.dev './src/./' && \
               \nopam pin add -yn eio_linux.dev './src/./' && \
               \nopam pin add -yn eio.dev './src/./'"))
[eio_windows.dev] synchronised (file:///Users/mac1000/src)
eio_windows is now pinned to file:///Users/mac1000/src (version dev)
[eio_posix.dev] synchronised (file:///Users/mac1000/src)
eio_posix is now pinned to file:///Users/mac1000/src (version dev)
[eio_main.dev] synchronised (file:///Users/mac1000/src)
eio_main is now pinned to file:///Users/mac1000/src (version dev)
[eio_linux.dev] synchronised (file:///Users/mac1000/src)
eio_linux is now pinned to file:///Users/mac1000/src (version dev)
[eio.dev] synchronised (file:///Users/mac1000/src)
eio is now pinned to file:///Users/mac1000/src (version dev)
2024-10-31 08:12.46 ---> using "03ad5d083ccd8377d068777415668878abfaa7dbdaba1285a12725b8182c8f00" from cache

/: (env DEPS "afl-persistent.1.4 alcotest.1.8.0 astring.0.8.5 backoff.0.1.1 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.1.3.0 containers.3.14 cppo.1.7.0 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.3.16.0 dune-configurator.3.16.0 either.1.0.0 fmt.0.9.0 hmap.0.8.1 host-arch-x86_64.1 host-system-other.1 iomux.0.3 kcas.0.7.0 logs.0.7.0 lwt-dllist.1.0.1 mdx.2.4.1 mtime.2.1.0 multicore-magic.2.3.0 ocaml.5.2.0 ocaml-base-compiler.5.2.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-syntax-shims.1.0.0 ocaml-version.3.6.9 ocamlbuild.0.15.0 ocamlfind.1.9.6 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.1.0.7 tsort.2.1.0 uutf.1.0.3 yojson.2.2.2")

/: (env CI true)

/: (env OCAMLCI true)

/: (run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
        (network host)
        (shell "opam update --depexts && opam install --cli=2.2 --depext-only -y eio_windows.dev eio_posix.dev eio_main.dev eio.dev $DEPS"))
+ /usr/local/bin/brew "update"
- ==> Updating Homebrew...
- ==> Downloading https://ghcr.io/v2/homebrew/portable-ruby/portable-ruby/blobs/sha256:e02b387d80f10c835df15115360b0b5deb8e35f8967c7e68c9942af046023209
- Already downloaded: /Users/mac1000/Library/Caches/Homebrew/portable-ruby-3.3.5.el_capitan.bottle.tar.gz
- ==> Pouring portable-ruby-3.3.5.el_capitan.bottle.tar.gz
- ==> Homebrew collects anonymous analytics.
- Read the analytics documentation (and how to opt-out) here:
-   https://docs.brew.sh/Analytics
- No analytics have been recorded yet (nor will be during this `brew` run).
- 
- ==> Homebrew is run entirely by unpaid volunteers. Please consider donating:
-   https://github.com/Homebrew/brew#donations
- 
- Already up-to-date.

<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>
[eio.dev] synchronised (no changes)
[eio_main.dev] synchronised (no changes)
[eio_posix.dev] synchronised (no changes)
[eio_windows.dev] synchronised (no changes)

[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 5.2.0).
[NOTE] Package ocaml is already installed (current version is 5.2.0).
[NOTE] Package host-system-other is already installed (current version is 1).
[NOTE] Package host-arch-x86_64 is already installed (current version is 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).
2024-10-31 08:12.46 ---> using "51ae2a29d3b70bf1a6200c00e3a729eb37e3bb8f7770d63f3f07ea0191d54ebe" from cache

/: (run (cache (opam-archives (target /Users/mac1000/.opam/download-cache)) (homebrew (target /Users/mac1000/Library/Caches/Homebrew)))
        (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 5.2.0).
[NOTE] Package ocaml is already installed (current version is 5.2.0).
[NOTE] Package host-system-other is already installed (current version is 1).
[NOTE] Package host-arch-x86_64 is already installed (current version is 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             1.8.0
  - 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 containers           3.14
  - install cppo                 1.7.0
  - 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                 3.16.0
  - install dune-configurator    3.16.0
  - install either               1.0.0
  - install fmt                  0.9.0
  - install hmap                 0.8.1
  - install iomux                0.3
  - install kcas                 0.7.0
  - install logs                 0.7.0
  - install lwt-dllist           1.0.1
  - install mdx                  2.4.1
  - install mtime                2.1.0
  - install multicore-magic      2.3.0
  - install ocaml-syntax-shims   1.0.0
  - install ocaml-version        3.6.9
  - install ocamlbuild           0.15.0
  - install ocamlfind            1.9.6
  - 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                1.0.7
  - install tsort                2.1.0
  - install uutf                 1.0.3
  - 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 bigstringaf.0.10.0  (cached)
-> retrieved camlp-streams.5.0.1  (cached)
-> retrieved cmdliner.1.3.0  (cached)
-> retrieved alcotest.1.8.0  (cached)
-> retrieved cppo.1.7.0  (cached)
-> retrieved crowbar.0.2.1  (cached)
-> retrieved csexp.1.5.2  (cached)
-> retrieved containers.3.14  (cached)
-> retrieved domain-local-await.1.0.1  (cached)
-> retrieved cstruct.6.2.0  (cached)
-> retrieved dscheck.0.5.0  (cached)
-> retrieved domain-local-timeout.1.0.1  (cached)
-> retrieved either.1.0.0  (cached)
-> retrieved fmt.0.9.0  (cached)
-> retrieved hmap.0.8.1  (cached)
-> retrieved iomux.0.3  (cached)
-> retrieved logs.0.7.0  (cached)
-> retrieved kcas.0.7.0  (cached)
-> retrieved lwt-dllist.1.0.1  (cached)
-> retrieved mtime.2.1.0  (cached)
-> retrieved multicore-magic.2.3.0  (cached)
-> retrieved ocaml-syntax-shims.1.0.0  (cached)
-> retrieved mdx.2.4.1  (cached)
-> retrieved ocaml-version.3.6.9  (cached)
-> retrieved ocamlfind.1.9.6  (cached)
-> retrieved ocplib-endian.1.2  (cached)
-> retrieved ocamlbuild.0.15.0  (cached)
-> retrieved oseq.0.5.1  (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 stdlib-shims.0.3.0  (cached)
-> retrieved re.1.12.0  (cached)
-> retrieved thread-table.1.0.0  (cached)
-> retrieved tsort.2.1.0  (cached)
-> retrieved topkg.1.0.7  (cached)
-> retrieved uutf.1.0.3  (cached)
-> retrieved yojson.2.2.2  (cached)
-> retrieved dune.3.16.0, dune-configurator.3.16.0  (cached)
-> installed ocamlbuild.0.15.0
-> installed cmdliner.1.3.0
-> installed ocamlfind.1.9.6
-> installed base-bytes.base
-> installed topkg.1.0.7
-> installed hmap.0.8.1
-> installed uutf.1.0.3
-> installed mtime.2.1.0
-> installed fmt.0.9.0
-> installed astring.0.8.5
-> installed logs.0.7.0
-> installed dune.3.16.0
-> installed lwt-dllist.1.0.1
-> installed backoff.0.1.1
-> installed csexp.1.5.2
-> installed afl-persistent.1.4
-> installed psq.0.2.1
-> installed oseq.0.5.1
-> installed optint.0.3.0
-> installed ocaml-version.3.6.9
-> installed ocaml-syntax-shims.1.0.0
-> installed multicore-magic.2.3.0
-> installed either.1.0.0
-> installed cstruct.6.2.0
-> installed cppo.1.7.0
-> installed camlp-streams.5.0.1
-> installed stdlib-shims.0.3.0
-> installed result.1.5
-> installed thread-table.1.0.0
-> installed tsort.2.1.0
-> installed ocplib-endian.1.2
-> installed domain-local-timeout.1.0.1
-> installed domain-local-await.1.0.1
-> installed dune-configurator.3.16.0
-> installed crowbar.0.2.1
-> installed yojson.2.2.2
-> installed re.1.12.0
-> installed kcas.0.7.0
-> installed bigstringaf.0.10.0
-> installed iomux.0.3
-> installed alcotest.1.8.0
-> installed containers.3.14
-> installed mdx.2.4.1
-> 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 5.2.0+afl ocaml-variants.5.2.0+options ocaml-option-afl
# Run eval $(opam env) to update the current shell environment
2024-10-31 08:12.46 ---> using "33dd04c9a02c49e485fb89c6b476ce127492232c54961605ea211965b447e0c8" from cache

/: (copy (src .) (dst ./src))
2024-10-31 08:12.53 ---> saved as "12489d044db3a2da35e1b11eb7bde0b852d0b39b3ecd5183c7768d03ade31aa4"

/: (run (shell "cd ./src && opam exec -- dune build --only-packages=eio_windows,eio_posix,eio_main,eio @install @check @runtest && rm -rf _build"))
(cd _build/default/fuzz && ./fuzz_inherit_fds.exe)
inherit_fds: PASS

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

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

File "tests/fs.md", line 1, characters 0-0:
/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/tests/fs.md _build/default/tests/.mdx/fs.md.corrected
diff --git a/_build/default/tests/fs.md b/_build/default/tests/.mdx/fs.md.corrected
index 059bfd4..930dad9 100644
--- a/_build/default/tests/fs.md
+++ b/_build/default/tests/.mdx/fs.md.corrected
@@ -102,6 +102,11 @@ let try_chmod ~perm path =
   with ex ->
     Eio.Std.traceln "@[<h>%a@]" Eio.Exn.pp ex
 ```
+```mdx-error
+Line 91, characters 7-32:
+Warning 5 [ignored-partial-application]: this function application is partial,
+maybe some arguments are missing.
+```
 
 # Basic test cases
 
@@ -113,6 +118,7 @@ Creating a file and reading it back:
   Path.save ~create:(`Exclusive 0o666) (cwd / "test-file") "my-data";
   traceln "Got %S" @@ Path.load (cwd / "test-file");;
 +Got "my-data"
+
 - : unit = ()
 ```
 
@@ -172,6 +178,7 @@ If-missing create succeeds if already exists:
   Path.save ~create:(`If_missing 0o666) test_file "2nd-write";
   traceln "Got %S" @@ Path.load test_file;;
 +Got "2nd-write-original"
+
 - : unit = ()
 ```
 
@@ -185,6 +192,7 @@ Truncate create succeeds if already exists, and truncates:
   Path.save ~create:(`Or_truncate 0o666) test_file "2nd-write";
   traceln "Got %S" @@ Path.load test_file;;
 +Got "2nd-write"
+
 - : unit = ()
 # Unix.unlink "test-file";;
 - : unit = ()
@@ -212,6 +220,7 @@ Appending to an existing file:
   Path.save ~create:`Never ~append:true test_file "2nd-write";
   traceln "Got %S" @@ Path.load test_file;;
 +Got "1st-write-original2nd-write"
+
 - : unit = ()
 # Unix.unlink "test-file";;
 - : unit = ()
@@ -228,6 +237,7 @@ Appending to an existing file:
   ();;
 +mkdir <cwd:subdir> -> ok
 +mkdir <cwd:subdir/nested> -> ok
+
 - : unit = ()
 # Unix.unlink "subdir/nested/test-file";
   Unix.rmdir "subdir/nested";
@@ -256,6 +266,7 @@ Creating directories with nesting, symlinks, etc:
 +Eio.Io Fs Permission_denied _, creating directory <cwd:../foo>
 +Eio.Io Fs Already_exists _, creating directory <cwd:to-subdir>
 +Eio.Io Fs Not_found _, creating directory <cwd:dangle/foo>
+
 - : unit = ()
 ```
 
@@ -322,6 +333,7 @@ Recursively creating directories with `mkdirs`.
 +mkdirs <cwd:subdir1/subdir2/subdir3/subdir4> -> ok
 +Eio.Io Fs Already_exists _, creating directory <cwd:subdir1/subdir2/subdir3/subdir4>
 +Eio.Io Fs Permission_denied _, examining <cwd:..>, creating directory <cwd:../outside>
+
 - : unit = ()
 ```
 
@@ -340,6 +352,7 @@ Some edge cases for `mkdirs`.
 +Eio.Io Fs Already_exists _, creating directory <cwd:././>
 +mkdirs <cwd:./test//////////////test> -> ok
 +Eio.Io Fs Permission_denied _, creating directory <cwd:..>
+
 - : unit = ()
 ```
 
@@ -373,6 +386,7 @@ You can remove a file using unlink:
 +write <cwd:subdir/file2> -> ok
 +unlink <cwd:to-subdir/file2> -> ok
 +Eio.Io Fs Not_found _, opening <cwd:subdir/file2>
+
 - : unit = ()
 ```
 
@@ -390,6 +404,7 @@ Removing something that doesn't exist or is out of scope:
 +Eio.Io Fs Permission_denied _, removing file <cwd:../foo>
 +Eio.Io Fs Not_found _, removing file <cwd:to-subdir/foo>
 +Eio.Io Fs Permission_denied _, removing file <cwd:to-root/foo>
+
 - : unit = ()
 ```
 
@@ -445,6 +460,7 @@ Reads and writes follow symlinks, but unlink operates on the symlink itself:
 +read <cwd:file1> -> "data1"
 +chdir ".."
 +read <cwd:file2> -> "data2"
+
 - : unit = ()
 ```
 
@@ -478,6 +494,7 @@ Similar to `unlink`, but works on directories:
 +mkdir <cwd:subdir/d3> -> ok
 +rmdir <cwd:to-subdir/d3> -> ok
 +Eio.Io Fs Not_found _, reading directory <cwd:subdir/d3>
+
 - : unit = ()
 ```
 
@@ -495,6 +512,7 @@ Removing something that doesn't exist or is out of scope:
 +Eio.Io Fs Permission_denied _, removing directory <cwd:../foo>
 +Eio.Io Fs Not_found _, removing directory <cwd:to-subdir/foo>
 +Eio.Io Fs Permission_denied _, removing directory <cwd:to-root/foo>
+
 - : unit = ()
 ```
 
@@ -520,6 +538,7 @@ Removing something that doesn't exist or is out of scope:
 +rmtree <cwd:foo> -> ok
 +But not without:
 +Eio.Io Fs Not_found _, removing file <cwd:foo>
+
 - : unit = ()
 ```
 
@@ -539,6 +558,7 @@ Create a sandbox, write a file with it, then read it from outside:
 +mkdir <cwd:sandbox> -> ok
 +Eio.Io Fs Permission_denied _, creating directory <sandbox:../new-sandbox>
 +Got "data"
+
 - : unit = ()
 ```
 
@@ -579,6 +599,7 @@ Create a sandbox, write a file with it, then read it from outside:
 +Eio.Io Fs Permission_denied _, opening directory <cwd:foo/up/../bar>
 +Eio.Io Fs Permission_denied _, opening directory <cwd:foo/root/..>
 +Eio.Io Fs Not_found _, opening directory <cwd:missing>
+
 - : unit = ()
 
 # Eio.Exn.Backend.show := false
@@ -611,6 +632,7 @@ Using `cwd` we can't access the parent, but using `fs` we can:
 +mkdir <fs:../outside-cwd> -> ok
 +write <fs:../test-file> -> ok
 +chdir ".."
+
 - : unit = ()
 ```
 
@@ -639,6 +661,7 @@ Reading directory entries under `cwd` and outside of `cwd`.
 +Eio.Io Fs Permission_denied _, reading directory <readdir:..>
 +Eio.Io Fs Not_found _, reading directory <readdir:test-3>
 +read_dir <readdir:link-1> -> ["file"]
+
 - : unit = ()
 ```
 
@@ -652,6 +675,7 @@ An error from the underlying directory, not the sandbox:
   let cwd = Eio.Stdenv.cwd env in
   try_read_dir (cwd / "test-no-access");;
 +Eio.Io Fs Permission_denied _, reading directory <cwd:test-no-access>
+
 - : unit = ()
 # Unix.chmod "test-no-access" 0o700;;
 - : unit = ()
@@ -670,6 +694,7 @@ Can use `fs` to access absolute paths:
   Path.with_open_in (cwd / Filename.null) (fun flow -> Eio.Flow.copy flow (Eio.Flow.buffer_sink b));;;
 +Read "/dev/null" and got ""
 +Trying with cwd instead fails:
+
 Exception: Eio.Io Fs Permission_denied _,
   opening <cwd:/dev/null>
 ```
@@ -694,6 +719,7 @@ Symlinking and sandboxing:
 +Eio.Io Fs Already_exists _, creating symlink <cwd:world.txt> -> hello.txt
 +symlink <cwd:root> -> "/"
 +Eio.Io Fs Permission_denied _, reading directory <cwd:root>
+
 - : unit = ()
 ```
 
@@ -709,6 +735,7 @@ Symlinking and sandboxing:
 +Line: one
 +Line: two
 +Line: three
+
 - : unit = ()
 ```
 
@@ -728,6 +755,7 @@ We can get the Unix FD from the flow and use it directly:
         traceln "Read %d bytes from null device" got
   );;
 +Read 0 bytes from null device
+
 - : unit = ()
 ```
 
@@ -744,6 +772,7 @@ In that case, `with_open_in` will no longer close it on exit:
   traceln "Read %d bytes from null device" got;
   Unix.close fd;;
 +Read 0 bytes from null device
+
 - : unit = ()
 ```
 
@@ -756,6 +785,7 @@ In that case, `with_open_in` will no longer close it on exit:
     failwith (Path.read_dir closed |> String.concat ",")
   with Invalid_argument _ -> traceln "Got Invalid_argument for closed FD";;
 +Got Invalid_argument for closed FD
+
 - : unit = ()
 ```
 
@@ -788,6 +818,7 @@ Confined:
 +rename <dir:bar> to <cwd:foo> -> ok
 +read <cwd:foo> -> "FOO"
 +Eio.Io Fs Permission_denied _, renaming <cwd:../foo> to <cwd:foo>
+
 - : unit = ()
 ```
 
@@ -803,6 +834,7 @@ Unconfined:
 +rename <dir:bar> to <fs:foo> -> ok
 +read <fs:foo> -> "FOO"
 +rename <fs:../foo> to <fs:foo> -> ok
+
 - : unit = ()
 ```
 
@@ -818,6 +850,7 @@ Unconfined:
   assert (Eio.Path.is_file (cwd / "stat_reg"));
 +mkdir <cwd:stat_subdir> -> ok
 +write <cwd:stat_reg> -> ok
+
 - : unit = ()
 ```
 
@@ -848,6 +881,7 @@ Unconfined:
 +<cwd:stat_subdir2/..> -> directory
 +<cwd:parent-symlink> -> symbolic link / Fs Permission_denied _
 +<cwd:missing1/missing2> -> Fs Not_found _
+
 - : unit = ()
 ```
 
@@ -870,6 +904,7 @@ Unconfined:
 +write <cwd:file> -> ok
 +Eio.Io _, reading target of symlink <cwd:file>
 +Eio.Io Fs Permission_denied _, reading target of symlink <cwd:../unknown>
+
 - : unit = ()
 ```
 
@@ -889,6 +924,7 @@ Check reading and writing vectors at arbitrary offsets:
   Eio.File.pread_exact file ~file_offset:(Int63.of_int 1) [buf1; buf2];
   traceln" %S/%S" (Cstruct.to_string buf1) (Cstruct.to_string buf2);;
 + "-ab"/"c123"
+
 - : unit = ()
 ```
 
@@ -910,6 +946,7 @@ Reading at the end of a file:
     traceln "End-of-file";;
 +Read "abc"
 +End-of-file
+
 - : unit = ()
 ```
 
@@ -971,6 +1008,7 @@ Exception: Failure "Simulated error".
 +<native-sub:.> -> Some ./native-sub/.
 +<native-sub:..> -> Some ./native-sub/..
 +<native-sub:/etc/passwd> -> Some /etc/passwd
+
 - : unit = ()
 ```
 
@@ -991,6 +1029,7 @@ Exception: Failure "Simulated error".
 +seek from start: 3
 +relative seek: 5
 +seek from end: 9
+
 - : unit = ()
 ```
 
@@ -1017,6 +1056,7 @@ Exception: Failure "Simulated error".
 +"" / "" = ""
 +"" / "bar" = "bar"
 +"/" / "" = "/"
+
 - : unit = ()
 ```
 
"/usr/bin/env" "bash" "-c" "cd ./src && opam exec -- dune build --only-packages=eio_windows,eio_posix,eio_main,eio @install @check @runtest && rm -rf _build" failed with exit status 1
2024-10-31 08:13.16: Job failed: Failed: Build failed