2026-04-16 16:39.51: New job: test janestreet/spawn https://github.com/janestreet/spawn.git#refs/heads/master (fe3419b0db20819d7a31383544971e48a6dff20a) (linux-s390x:debian-13-5.4_s390x_opam-2.5)Base: ocaml/opam:debian-13-ocaml-5.4@sha256:861c06f54720da3b18d2bf59d8bf9344a8ed199bb58da47182f5d7998ae05400Opam project buildTo reproduce locally:git clone --recursive "https://github.com/janestreet/spawn.git" -b "master" && cd "spawn" && git reset --hard fe3419b0cat > Dockerfile <<'END-OF-DOCKERFILE'FROM ocaml/opam:debian-13-ocaml-5.4@sha256:861c06f54720da3b18d2bf59d8bf9344a8ed199bb58da47182f5d7998ae05400# debian-13-5.4_s390x_opam-2.5USER 1000:1000ENV CLICOLOR_FORCE="1"ENV OPAMCOLOR="always"WORKDIR /srcRUN sudo ln -f /usr/bin/opam-2.5 /usr/bin/opamRUN opam init --reinit -niRUN uname -rs && opam exec -- ocaml -version && opam --versionWORKDIR /srcRUN sudo chown opam /srcRUN cd ~/opam-repository && (git cat-file -e 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 || git fetch origin master) && git reset -q --hard 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 && git log --no-decorate -n1 --oneline && opam update -uCOPY --chown=1000:1000 spawn.opam ./RUN opam pin add -yn spawn.dev './'RUN echo '(lang dune 3.0)' > './dune-project'ENV DEPS="base.v0.17.3 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base csexp.1.5.2 dune.3.22.2 dune-configurator.3.22.2 jane-street-headers.v0.17.0 jst-config.v0.17.0 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml_intrinsics_kernel.v0.17.1 ppx_assert.v0.17.0 ppx_base.v0.17.0 ppx_cold.v0.17.0 ppx_compare.v0.17.0 ppx_derivers.1.2.1 ppx_enumerate.v0.17.0 ppx_expect.v0.17.3 ppx_globalize.v0.17.2 ppx_hash.v0.17.0 ppx_here.v0.17.0 ppx_inline_test.v0.17.1 ppx_optcomp.v0.17.1 ppx_sexp_conv.v0.17.1 ppxlib.0.38.0 ppxlib_jane.v0.17.4 sexplib0.v0.17.0 stdio.v0.17.0 stdlib-shims.0.3.0 time_now.v0.17.0"ENV CI="true"ENV OCAMLCI="true"RUN opam update --depexts && opam install --cli=2.5 --depext-only -y spawn.dev $DEPSRUN opam install $DEPSCOPY --chown=1000:1000 . /srcRUN opam exec -- dune build @install @check @runtest && rm -rf _buildEND-OF-DOCKERFILEdocker build .END-REPRO-BLOCK2026-04-16 16:39.51: Using cache hint "janestreet/spawn-ocaml/opam:debian-13-ocaml-5.4@sha256:861c06f54720da3b18d2bf59d8bf9344a8ed199bb58da47182f5d7998ae05400-debian-13-5.4_s390x_opam-2.5-8abc69c831b579baf91c8767f63e758d"2026-04-16 16:39.51: Using OBuilder spec:((from ocaml/opam:debian-13-ocaml-5.4@sha256:861c06f54720da3b18d2bf59d8bf9344a8ed199bb58da47182f5d7998ae05400)(comment debian-13-5.4_s390x_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-2.5 /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 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 || git fetch origin master) && git reset -q --hard 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 && git log --no-decorate -n1 --oneline && opam update -u"))(copy (src spawn.opam) (dst ./))(run (network host)(shell "opam pin add -yn spawn.dev './'"))(run (shell "echo '(lang dune 3.0)' > './dune-project'"))(env DEPS "base.v0.17.3 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base csexp.1.5.2 dune.3.22.2 dune-configurator.3.22.2 jane-street-headers.v0.17.0 jst-config.v0.17.0 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml_intrinsics_kernel.v0.17.1 ppx_assert.v0.17.0 ppx_base.v0.17.0 ppx_cold.v0.17.0 ppx_compare.v0.17.0 ppx_derivers.1.2.1 ppx_enumerate.v0.17.0 ppx_expect.v0.17.3 ppx_globalize.v0.17.2 ppx_hash.v0.17.0 ppx_here.v0.17.0 ppx_inline_test.v0.17.1 ppx_optcomp.v0.17.1 ppx_sexp_conv.v0.17.1 ppxlib.0.38.0 ppxlib_jane.v0.17.4 sexplib0.v0.17.0 stdio.v0.17.0 stdlib-shims.0.3.0 time_now.v0.17.0")(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=2.5 --depext-only -y spawn.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")))2026-04-16 16:39.51: Waiting for resource in pool OCluster2026-04-16 20:49.43: Waiting for worker…2026-04-17 02:21.38: Got resource from pool OClusterBuilding on s390x-worker-01.marist.ci.devAll commits already cachedHEAD is now at fe3419b Do not require C99 mode for older GCC (#62)(from ocaml/opam:debian-13-ocaml-5.4@sha256:861c06f54720da3b18d2bf59d8bf9344a8ed199bb58da47182f5d7998ae05400)Unable to find image 'ocaml/opam:debian-13-ocaml-5.4@sha256:861c06f54720da3b18d2bf59d8bf9344a8ed199bb58da47182f5d7998ae05400' locallydocker.io/ocaml/opam@sha256:861c06f54720da3b18d2bf59d8bf9344a8ed199bb58da47182f5d7998ae05400: Pulling from ocaml/opamDigest: sha256:861c06f54720da3b18d2bf59d8bf9344a8ed199bb58da47182f5d7998ae05400Status: Downloaded newer image for ocaml/opam@sha256:861c06f54720da3b18d2bf59d8bf9344a8ed199bb58da47182f5d7998ae054002026-04-17 02:21.39 ---> using "1409726e79dc9be9e4654217e55476173a1c5e4979c5ce8b4590b4f02c5bba90" from cache/: (comment debian-13-5.4_s390x_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-2.5 /usr/bin/opam"))2026-04-17 02:21.39 ---> using "5984c7db0c3205eebbe2b0f9dffc8a14fce2938cbfb2bd7f84def5e90e28ede8" 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 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] yFormat upgrade done.<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>[default] Initialised2026-04-17 02:21.39 ---> using "c352ee630ca44c2cbb5a2306c53342d63d89bb3eace87beefde3a620dbe8617a" from cache/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))Linux 6.8.0-107-genericThe OCaml toplevel, version 5.4.12.5.02026-04-17 02:21.39 ---> using "631a37c5bd52ff501299e11acc882062011c2c834e90ee4b8e0b8314ff72feef" from cache/src: (workdir /src)/src: (run (shell "sudo chown opam /src"))2026-04-17 02:21.39 ---> using "4cf8a4ec6775313ba00e7945991404b95d24be54cf13198975e09a30f94a5632" from cache/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "cd ~/opam-repository && (git cat-file -e 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 || git fetch origin master) && git reset -q --hard 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 && git log --no-decorate -n1 --oneline && opam update -u"))From https://github.com/ocaml/opam-repository* branch master -> FETCH_HEAD42844088d7..0b0acbee05 master -> origin/master5f7bb1a6e6 Merge pull request #29704 from shonfeder/release-dune-3.22.2<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>[default] synchronised from git+file:///home/opam/opam-repositoryEverything as up-to-date as possibleHowever, you may "opam upgrade" these packages explicitly at these versions (e.g. "opam upgrade ocaml.5.5.0"), which will ask permission to downgrade or uninstall the conflicting packages.Nothing to do.# To update the current shell environment, run: eval $(opam env)2026-04-17 02:21.39 ---> using "e444212b93c626992086b0915328ff45ab83865a20d1821378bb57606b24be7c" from cache/src: (copy (src spawn.opam) (dst ./))2026-04-17 02:21.41 ---> saved as "a3ebcde213c0b166985e07e946e4a8ae2ba2770596266e7ee160d7ba63fb6c7a"/src: (run (network host)(shell "opam pin add -yn spawn.dev './'"))[spawn.dev] synchronised (file:///src)spawn is now pinned to file:///src (version dev)2026-04-17 02:21.48 ---> saved as "d619f60d5c949135a0e664f1d6b5ca12a671dec4dc824bd2d323357afbd98df1"/src: (run (shell "echo '(lang dune 3.0)' > './dune-project'"))2026-04-17 02:21.49 ---> saved as "1b7959431fd48f674d832b56425083d4df9055368b3a19259b05485da4b66d3f"/src: (env DEPS "base.v0.17.3 base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base csexp.1.5.2 dune.3.22.2 dune-configurator.3.22.2 jane-street-headers.v0.17.0 jst-config.v0.17.0 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-compiler-libs.v0.17.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml_intrinsics_kernel.v0.17.1 ppx_assert.v0.17.0 ppx_base.v0.17.0 ppx_cold.v0.17.0 ppx_compare.v0.17.0 ppx_derivers.1.2.1 ppx_enumerate.v0.17.0 ppx_expect.v0.17.3 ppx_globalize.v0.17.2 ppx_hash.v0.17.0 ppx_here.v0.17.0 ppx_inline_test.v0.17.1 ppx_optcomp.v0.17.1 ppx_sexp_conv.v0.17.1 ppxlib.0.38.0 ppxlib_jane.v0.17.4 sexplib0.v0.17.0 stdio.v0.17.0 stdlib-shims.0.3.0 time_now.v0.17.0")/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=2.5 --depext-only -y spawn.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 s390x Packages [115 kB]- Fetched 206 kB in 0s (1481 kB/s)- Reading package lists...<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>[spawn.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 5.4.1).[NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.1).[NOTE] Package ocaml is already installed (current version is 5.4.1).[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-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)2026-04-17 02:22.04 ---> saved as "74674187ff490a5306f8cec9f5d57df5aae46ea8e33a3ae645784e69fec3e1d1"/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 5.4.1).[NOTE] Package ocaml-base-compiler is already installed (current version is 5.4.1).[NOTE] Package ocaml is already installed (current version is 5.4.1).[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-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 27 packages- install base v0.17.3- install csexp 1.5.2- install dune 3.22.2- install dune-configurator 3.22.2- install jane-street-headers v0.17.0- install jst-config v0.17.0- install ocaml-compiler-libs v0.17.0- install ocaml_intrinsics_kernel v0.17.1- install ppx_assert v0.17.0- install ppx_base v0.17.0- install ppx_cold v0.17.0- install ppx_compare v0.17.0- install ppx_derivers 1.2.1- install ppx_enumerate v0.17.0- install ppx_expect v0.17.3- install ppx_globalize v0.17.2- install ppx_hash v0.17.0- install ppx_here v0.17.0- install ppx_inline_test v0.17.1- install ppx_optcomp v0.17.1- install ppx_sexp_conv v0.17.1- install ppxlib 0.38.0- install ppxlib_jane v0.17.4- install sexplib0 v0.17.0- install stdio v0.17.0- install stdlib-shims 0.3.0- install time_now v0.17.0<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>-> retrieved base.v0.17.3 (cached)-> retrieved csexp.1.5.2 (cached)-> retrieved dune.3.22.2, dune-configurator.3.22.2 (cached)-> retrieved jane-street-headers.v0.17.0 (cached)-> retrieved jst-config.v0.17.0 (cached)-> retrieved ocaml-compiler-libs.v0.17.0 (cached)-> retrieved ocaml_intrinsics_kernel.v0.17.1 (cached)-> retrieved ppx_assert.v0.17.0 (cached)-> retrieved ppx_base.v0.17.0 (cached)-> retrieved ppx_cold.v0.17.0 (cached)-> retrieved ppx_compare.v0.17.0 (cached)-> retrieved ppx_derivers.1.2.1 (cached)-> retrieved ppx_enumerate.v0.17.0 (cached)-> retrieved ppx_globalize.v0.17.2 (cached)-> retrieved ppx_expect.v0.17.3 (cached)-> retrieved ppx_hash.v0.17.0 (cached)-> retrieved ppx_here.v0.17.0 (cached)-> retrieved ppx_inline_test.v0.17.1 (cached)-> retrieved ppx_optcomp.v0.17.1 (cached)-> retrieved ppx_sexp_conv.v0.17.1 (cached)-> retrieved ppxlib_jane.v0.17.4 (cached)-> retrieved sexplib0.v0.17.0 (cached)-> retrieved stdio.v0.17.0 (cached)-> retrieved stdlib-shims.0.3.0 (cached)-> retrieved time_now.v0.17.0 (cached)-> retrieved ppxlib.0.38.0 (cached)-> installed dune.3.22.2-> installed jane-street-headers.v0.17.0-> installed csexp.1.5.2-> installed ppx_derivers.1.2.1-> installed ocaml-compiler-libs.v0.17.0-> installed ocaml_intrinsics_kernel.v0.17.1-> installed stdlib-shims.0.3.0-> installed sexplib0.v0.17.0-> installed dune-configurator.3.22.2-> installed base.v0.17.3-> installed stdio.v0.17.0-> installed ppxlib.0.38.0-> installed ppx_optcomp.v0.17.1-> installed ppx_cold.v0.17.0-> installed ppx_here.v0.17.0-> installed ppxlib_jane.v0.17.4-> installed ppx_enumerate.v0.17.0-> installed ppx_globalize.v0.17.2-> installed ppx_compare.v0.17.0-> installed ppx_sexp_conv.v0.17.1-> installed ppx_hash.v0.17.0-> installed ppx_assert.v0.17.0-> installed ppx_base.v0.17.0-> installed jst-config.v0.17.0-> installed time_now.v0.17.0-> installed ppx_inline_test.v0.17.1-> installed ppx_expect.v0.17.3Done.# To update the current shell environment, run: eval $(opam env)2026-04-17 02:23.57 ---> saved as "b20016411c66036ce3ac5f9b557f0fdb33add5ea0fc4bb1d833f8feb7e60c772"/src: (copy (src .) (dst /src))2026-04-17 02:23.57 ---> saved as "9cfc6f9dd09f96ce2a425304d9a5a611f2d67a8d1ad5f68d1fc0fee6a66ae8e5"/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))File "bench/dune", line 5, characters 7-16:5 | (pps ppx_bench)))^^^^^^^^^Error: Library "ppx_bench" not found.-> required by _build/default/bench/.merlin-conf/lib-spawn_bench-> required by alias bench/check"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 12026-04-17 02:24.01: Job failed: Failed: Build failed