2026-01-22 00:37.51: New job: test ocaml-multicore/eio https://github.com/ocaml-multicore/eio.git#refs/pull/827/head (67786246899f4b196689708df6cfd6e8348f6550) (macos-x86_64:macos-homebrew-5.4_opam-2.5) Base: macos-homebrew-ocaml-5.4 Opam project build To reproduce locally: git clone --recursive "https://github.com/ocaml-multicore/eio.git" && cd "eio" && git fetch origin "refs/pull/827/head" && git reset --hard 67786246 cat > Dockerfile <<'END-OF-DOCKERFILE' FROM macos-homebrew-ocaml-5.4 # macos-homebrew-5.4_opam-2.5 USER 1000:1000 ENV CLICOLOR_FORCE="1" ENV OPAMCOLOR="always" RUN ln -f ~/local/bin/opam-2.5 ~/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 1c997ec9e6ebc6ea699547000cb8dfa44e52efaa || git fetch origin master) && git reset -q --hard 1c997ec9e6ebc6ea699547000cb8dfa44e52efaa && 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/./' RUN echo '(lang dune 3.0)' > './src/./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-effects.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.3.17 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.3.21.0 dune-configurator.3.21.0 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.2.3.2 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 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 uutf.1.0.4 yojson.3.0.0" ENV CI="true" ENV OCAMLCI="true" RUN opam update --depexts && opam install --cli=2.5 --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 2026-01-22 00:37.51: Using cache hint "ocaml-multicore/eio-macos-homebrew-ocaml-5.4-macos-homebrew-5.4_opam-2.5-044cf15011ca07383fe76986e72f8e8e" 2026-01-22 00:37.51: Using OBuilder spec: ((from macos-homebrew-ocaml-5.4) (comment macos-homebrew-5.4_opam-2.5) (user (uid 1000) (gid 1000)) (env CLICOLOR_FORCE 1) (env OPAMCOLOR always) (run (shell "ln -f ~/local/bin/opam-2.5 ~/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 1c997ec9e6ebc6ea699547000cb8dfa44e52efaa || git fetch origin master) && git reset -q --hard 1c997ec9e6ebc6ea699547000cb8dfa44e52efaa && 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/./'")) (run (network host) (shell "echo '(lang dune 3.0)' > './src/./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-effects.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.3.17 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.3.21.0 dune-configurator.3.21.0 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.2.3.2 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 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 uutf.1.0.4 yojson.3.0.0") (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=2.5 --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")) ) 2026-01-22 00:37.51: Waiting for resource in pool OCluster 2026-01-22 00:37.51: Waiting for worker… 2026-01-22 00:37.51: Got resource from pool OCluster Building on i7-worker-01 HEAD is now at 026dd74 Added some documentation about the downsides of this approach HEAD is now at 6778624 Adds support for interacting with devices on macOS (from macos-homebrew-ocaml-5.4) 2026-01-22 00:37.53 ---> using "338135fbf1889e924a607b47198b8b308c32a925cc9436066d65a9bdc402cad5" from cache /: (comment macos-homebrew-5.4_opam-2.5) /: (user (uid 1000) (gid 1000)) /: (env CLICOLOR_FORCE 1) /: (env OPAMCOLOR always) /: (run (shell "ln -f ~/local/bin/opam-2.5 ~/local/bin/opam")) 2026-01-22 00:37.54 ---> using "0e9d0f8ed44ab1f77ef30c8d8456629e6c63f869a24319cbb64657a84e315111" 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 2026-01-22 00:37.54 ---> using "06effe220fa63e5f9fae9bf4643255961d59bf292a94931a0e1dd6d81a9fa7c6" from cache /: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) Darwin 24.5.0 The OCaml toplevel, version 5.4.0 2.5.0 2026-01-22 00:37.54 ---> using "78e99acc02a52806060d0075d40f6ea681e9ef77eb60ecbbaff6e5155272646b" 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 1c997ec9e6ebc6ea699547000cb8dfa44e52efaa || git fetch origin master) && git reset -q --hard 1c997ec9e6ebc6ea699547000cb8dfa44e52efaa && git log --no-decorate -n1 --oneline && opam update -u")) From https://github.com/ocaml/opam-repository * branch master -> FETCH_HEAD 4c9d80b731..1c997ec9e6 master -> origin/master 1c997ec9e6 Merge pull request #29241 from polytypic/release-multicore-magic-2.3.2 <><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><> [default] synchronised from git+file:///Users/mac1000/opam-repository Already up-to-date. Nothing to do. # To update the current shell environment, run: eval $(opam env) 2026-01-22 00:37.55 ---> using "f9a5f719da477d2c9d7a3035c50aa92c1d166be59441cca15ba5fc9bc236f238" from cache /: (copy (src eio_windows.opam eio_posix.opam eio_main.opam eio_linux.opam eio.opam) (dst ./src/./)) 2026-01-22 00:37.55 ---> using "47f4b1987e9c713b4d138c58a591c68b0c14a26ef1e0c369a49a3aa4550c419b" 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) 2026-01-22 00:37.55 ---> using "2038c34b2dcadbf7fd8a4732ada9e1e5b759ffa5e57dfb1b332752ba55a59805" from cache /: (run (network host) (shell "echo '(lang dune 3.0)' > './src/./dune-project'")) 2026-01-22 00:37.56 ---> using "47a3f835b4640f7029560c3951d597b6c2fbe2a1b72fe31e8c3b2c12a9790297" from cache /: (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-effects.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.3.17 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.3.21.0 dune-configurator.3.21.0 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.2.3.2 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 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 uutf.1.0.4 yojson.3.0.0") /: (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=2.5 --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/core/portable-ruby/blobs/sha256:80c194381e990a4967a1ae44b8242b688e6a17ab590865a38671137677411469 - Already downloaded: /Users/mac1000/Library/Caches/Homebrew/portable-ruby-3.4.8.catalina.bottle.tar.gz - ==> Pouring portable-ruby-3.4.8.catalina.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 - - Updated 1 tap (homebrew/core). <><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><> [eio_posix.dev] synchronised (file:///Users/mac1000/src) [eio_main.dev] synchronised (file:///Users/mac1000/src) [eio.dev] synchronised (file:///Users/mac1000/src) [eio_windows.dev] synchronised (file:///Users/mac1000/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 5.4.0). [NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.0). [NOTE] Package ocaml is already installed (current version is 5.4.0). [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). # To update the current shell environment, run: eval $(opam env) 2026-01-22 00:37.56 ---> using "6dadf02a04d2bfb9cfad2b0650c65a8c2ca759ccad5956fd371d86ca8801fee7" 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-compiler is already installed (current version is 5.4.0). [NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.0). [NOTE] Package ocaml is already installed (current version is 5.4.0). [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 44 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 3.17 - 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 3.21.0 - install dune-configurator 3.21.0 - 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 2.3.2 - 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 uutf 1.0.4 - install yojson 3.0.0 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> retrieved astring.0.8.5 (cached) -> retrieved alcotest.1.9.1 (cached) -> retrieved backoff.0.1.1 (cached) -> retrieved afl-persistent.1.4 (cached) -> retrieved bigstringaf.0.10.0 (cached) -> retrieved camlp-streams.5.0.1 (cached) -> retrieved cmdliner.2.1.0 (cached) -> retrieved crowbar.0.2.2 (cached) -> installed conf-bash.1 -> retrieved cppo.1.8.0 (cached) -> retrieved csexp.1.5.2 (cached) -> retrieved domain-local-await.1.0.1 (cached) -> retrieved containers.3.17 (cached) -> retrieved domain-local-timeout.1.0.1 (cached) -> retrieved dscheck.0.5.0 (cached) -> retrieved cstruct.6.2.0 (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 kcas.0.7.0 (cached) -> retrieved logs.0.10.0 (cached) -> retrieved lwt-dllist.1.1.0 (cached) -> retrieved mtime.2.1.0 (cached) -> retrieved multicore-magic.2.3.2 (cached) -> retrieved ocaml-syntax-shims.1.0.0 (cached) -> retrieved ocaml-version.4.0.3 (cached) -> retrieved mdx.2.5.1 (cached) -> retrieved ocamlbuild.0.16.1 (cached) -> retrieved optint.0.3.0 (cached) -> retrieved ocamlfind.1.9.8 (cached) -> retrieved psq.0.2.1 (cached) -> retrieved oseq.0.5.1 (cached) -> retrieved result.1.5 (cached) -> retrieved seq.base (cached) -> installed seq.base -> retrieved re.1.14.0 (cached) -> retrieved stdlib-shims.0.3.0 (cached) -> retrieved thread-table.1.0.0 (cached) -> retrieved tsort.2.2.0 (cached) -> retrieved uutf.1.0.4 (cached) -> retrieved topkg.1.1.1 (cached) -> retrieved yojson.3.0.0 (cached) -> retrieved dune.3.21.0, dune-configurator.3.21.0 (cached) -> installed ocamlbuild.0.16.1 -> installed cmdliner.2.1.0 -> installed ocamlfind.1.9.8 -> installed topkg.1.1.1 -> installed hmap.0.8.1 -> installed uutf.1.0.4 -> installed mtime.2.1.0 -> installed fmt.0.11.0 -> installed astring.0.8.5 -> installed logs.0.10.0 -> installed dune.3.21.0 -> installed lwt-dllist.1.1.0 -> installed backoff.0.1.1 -> installed afl-persistent.1.4 -> installed either.1.0.0 -> installed csexp.1.5.2 -> installed camlp-streams.5.0.1 -> installed re.1.14.0 -> installed psq.0.2.1 -> installed oseq.0.5.1 -> installed optint.0.3.0 -> installed ocaml-version.4.0.3 -> installed crowbar.0.2.2 -> installed result.1.5 -> installed ocaml-syntax-shims.1.0.0 -> installed multicore-magic.2.3.2 -> installed cstruct.6.2.0 -> installed cppo.1.8.0 -> installed stdlib-shims.0.3.0 -> installed thread-table.1.0.0 -> installed tsort.2.2.0 -> installed domain-local-timeout.1.0.1 -> installed domain-local-await.1.0.1 -> installed kcas.0.7.0 -> installed dune-configurator.3.21.0 -> installed yojson.3.0.0 -> installed alcotest.1.9.1 -> installed bigstringaf.0.10.0 -> installed mdx.2.5.1 -> installed iomux.0.4 -> installed containers.3.17 -> 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 5.4.0+afl ocaml-variants.5.4.0+options ocaml-option-afl # To update the current shell environment, run: eval $(opam env) 2026-01-22 00:37.56 ---> using "9f23c3b0e4635d3e275cfc491ffd5a287fef7a1f8c98e23aefd07b3f634cc630" from cache /: (copy (src .) (dst ./src)) 2026-01-22 00:37.58 ---> saved as "a1b14baa6a13d8b58b9b5a3cdc76512bd88e9df698d0f8b17e5356e212ddd1bd" /: (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_buf_read.exe) random ops: PASS (cd _build/default/fuzz && ./fuzz_buf_write.exe) random ops: PASS (cd _build/default/fuzz && ./fuzz_inherit_fds.exe) inherit_fds: PASS 2026-01-22 00:38.09 ---> saved as "5706fc0bbf2e63a902f00c39e438db58d3a1dec6ec860dd2bc5c9b06b292654f" Job succeeded 2026-01-22 00:38.19: Job succeeded