2026-01-12 14:12.44: New job: test ocaml-multicore/effects-examples https://github.com/ocaml-multicore/effects-examples.git#refs/heads/master (8a7e80dd29e68e2d05fe4b0399c8535a51f36395) (linux-x86_64:fedora-43-5.4_opam-2.5)Base: ocaml/opam:fedora-43-ocaml-5.4@sha256:51857b77e14453184f8e7d44a9a7171bcfa8c2affcfc6df48a5bb08522abc6a2Opam project buildTo reproduce locally:git clone --recursive "https://github.com/ocaml-multicore/effects-examples.git" -b "master" && cd "effects-examples" && git reset --hard 8a7e80ddcat > Dockerfile <<'END-OF-DOCKERFILE'FROM ocaml/opam:fedora-43-ocaml-5.4@sha256:51857b77e14453184f8e7d44a9a7171bcfa8c2affcfc6df48a5bb08522abc6a2# fedora-43-5.4_opam-2.5USER 1000:1000ENV CLICOLOR_FORCE="1"ENV OPAMCOLOR="always"WORKDIR /srcRUN sudo dnf install -y findutilsRUN 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 7d22a58614c38be74d79ae6ef2b64994ca4ffef0 || git fetch origin master) && git reset -q --hard 7d22a58614c38be74d79ae6ef2b64994ca4ffef0 && git log --no-decorate -n1 --oneline && opam update -uCOPY --chown=1000:1000 effects-examples.opam ./RUN opam pin add -yn effects-examples.dev './'RUN echo '(lang dune 3.0)' > './dune-project'ENV DEPS="base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base cppo.1.8.0 csexp.1.5.2 dune.3.20.2 dune-configurator.3.20.2 lwt.6.0.0 multicont.1.0.3 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-options-vanilla.1 ocamlfind.1.9.8 ocplib-endian.1.2"ENV CI="true"ENV OCAMLCI="true"RUN opam update --depexts && opam install --cli=2.5 --depext-only -y effects-examples.dev $DEPSRUN opam install $DEPSCOPY --chown=1000:1000 . /srcRUN opam exec -- dune build @install @check @runtest && rm -rf _buildEND-OF-DOCKERFILEdocker build .END-REPRO-BLOCK2026-01-12 14:12.44: Using cache hint "ocaml-multicore/effects-examples-ocaml/opam:fedora-43-ocaml-5.4@sha256:51857b77e14453184f8e7d44a9a7171bcfa8c2affcfc6df48a5bb08522abc6a2-fedora-43-5.4_opam-2.5-3c40eed6e97307e7ea0e83d7ef25a649"2026-01-12 14:12.44: Using OBuilder spec:((from ocaml/opam:fedora-43-ocaml-5.4@sha256:51857b77e14453184f8e7d44a9a7171bcfa8c2affcfc6df48a5bb08522abc6a2)(comment fedora-43-5.4_opam-2.5)(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-2.5 /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 7d22a58614c38be74d79ae6ef2b64994ca4ffef0 || git fetch origin master) && git reset -q --hard 7d22a58614c38be74d79ae6ef2b64994ca4ffef0 && git log --no-decorate -n1 --oneline && opam update -u"))(copy (src effects-examples.opam) (dst ./))(run (network host)(shell "opam pin add -yn effects-examples.dev './'"))(run (network host)(shell "echo '(lang dune 3.0)' > './dune-project'"))(env DEPS "base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base cppo.1.8.0 csexp.1.5.2 dune.3.20.2 dune-configurator.3.20.2 lwt.6.0.0 multicont.1.0.3 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-options-vanilla.1 ocamlfind.1.9.8 ocplib-endian.1.2")(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=2.5 --depext-only -y effects-examples.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")))2026-01-12 14:12.44: Waiting for resource in pool OCluster2026-01-13 20:35.25: Waiting for worker…2026-01-13 20:40.00: Got resource from pool OClusterBuilding on laodoke.caelum.ci.devAll commits already cachedHEAD is now at 8a7e80d Merge pull request #44 from ocaml-multicore/multicont-1.0.3(from ocaml/opam:fedora-43-ocaml-5.4@sha256:51857b77e14453184f8e7d44a9a7171bcfa8c2affcfc6df48a5bb08522abc6a2)2026-01-13 20:40.00 ---> using "71487916328e2521e9b3eace51b2d612b3cb065793b43d1600de6f3b03cd399e" from cache/: (comment fedora-43-5.4_opam-2.5)/: (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 43 - x86_64 100% | 48.0 KiB/s | 22.4 KiB | 00m00sFedora 43 openh264 (From Cisco) - x86_ 100% | 3.2 KiB/s | 986.0 B | 00m00sFedora 43 - x86_64 - Updates 100% | 115.1 KiB/s | 21.8 KiB | 00m00sRepositories loaded.Package "findutils-1:4.10.0-6.fc43.x86_64" is already installed.Nothing to do.2026-01-13 20:40.00 ---> using "0b34afd4e3087d469b73a6367d196bb2e8240ba8587cb3dff0225a61fbc4d704" from cache/src: (run (shell "sudo ln -f /usr/bin/opam-2.5 /usr/bin/opam"))2026-01-13 20:40.00 ---> using "cda57de870a0fb8a1b2aae3460ee81a914a60dde9ae3de8901b78ed905770b52" 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] Initialised2026-01-13 20:40.00 ---> using "fff8ea5001be0d93f319380baf4ac13ad247643d070b0ee435a4260a4ed83eae" from cache/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))Linux 6.8.0-90-genericThe OCaml toplevel, version 5.4.02.5.02026-01-13 20:40.00 ---> using "ec068aa0d3f8f59972847d7b6d8a63a2103209f4fc3ff6b4ca6d36fbe9c62033" from cache/src: (workdir /src)/src: (run (shell "sudo chown opam /src"))2026-01-13 20:40.00 ---> using "15fb57da25d3835d29238de7432d19d2c06a159c23571da32ce6aec7d9aa4aba" from cache/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "cd ~/opam-repository && (git cat-file -e 7d22a58614c38be74d79ae6ef2b64994ca4ffef0 || git fetch origin master) && git reset -q --hard 7d22a58614c38be74d79ae6ef2b64994ca4ffef0 && git log --no-decorate -n1 --oneline && opam update -u"))From https://github.com/ocaml/opam-repository* branch master -> FETCH_HEADee48e882f0..df0b753b90 master -> origin/master7d22a58614 Merge pull request #29184 from raphael-proust/opam-publish-lwt.6.0.0<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>[default] synchronised from git+file:///home/opam/opam-repositoryAlready up-to-date.Nothing to do.# To update the current shell environment, run: eval $(opam env)2026-01-13 20:40.00 ---> using "fa0c787e372dad911a55394bb0dbc083c7aea2ed0dc5fef63f7a8298162ca7ed" from cache/src: (copy (src effects-examples.opam) (dst ./))2026-01-13 20:40.00 ---> saved as "20cb41c8b325ebc4ff1039467df089d42171c716094e7d9afd05370cd93f8b91"/src: (run (network host)(shell "opam pin add -yn effects-examples.dev './'"))[NOTE] Package effects-examples does not exist in opam repositories registered in the current switch.[WARNING] Failed checks on effects-examples package definition from source at file:///src:warning 68: Missing field 'license'[effects-examples.dev] synchronised (file:///src)effects-examples is now pinned to file:///src (version dev)2026-01-13 20:40.02 ---> saved as "c27ff8c49eee00a4e1e40210a39d6d47bdc332f01b81d6c8b5a4ef4ec7d79335"/src: (run (network host)(shell "echo '(lang dune 3.0)' > './dune-project'"))2026-01-13 20:40.02 ---> saved as "3a079aa6626b35981a9952809470e24a1990df386ca90dfe0a8b575ab2d4cf4c"/src: (env DEPS "base-bigarray.base base-bytes.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base cppo.1.8.0 csexp.1.5.2 dune.3.20.2 dune-configurator.3.20.2 lwt.6.0.0 multicont.1.0.3 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-options-vanilla.1 ocamlfind.1.9.8 ocplib-endian.1.2")/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=2.5 --depext-only -y effects-examples.dev $DEPS"))+ /usr/sbin/sudo "yum" "makecache"- Updating and loading repositories:- Repositories loaded.- Metadata cache created.<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>[effects-examples.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 5.4.0).[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)2026-01-13 20:40.17 ---> saved as "d9b2b65ab15c4adcfd35e7e1af4dc463b2984ee068b725390e0f10182b30994e"/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 5.4.0).[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 9 packages- install base-bytes base- install cppo 1.8.0- install csexp 1.5.2- install dune 3.20.2- install dune-configurator 3.20.2- install lwt 6.0.0- install multicont 1.0.3- install ocamlfind 1.9.8- install ocplib-endian 1.2<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>-> retrieved cppo.1.8.0 (cached)-> retrieved csexp.1.5.2 (cached)-> retrieved multicont.1.0.3 (cached)-> retrieved lwt.6.0.0 (cached)-> retrieved ocamlfind.1.9.8 (cached)-> retrieved ocplib-endian.1.2 (cached)-> retrieved dune.3.20.2, dune-configurator.3.20.2 (cached)-> installed ocamlfind.1.9.8-> installed base-bytes.base-> installed dune.3.20.2-> installed csexp.1.5.2-> installed cppo.1.8.0-> installed ocplib-endian.1.2-> installed dune-configurator.3.20.2[ERROR] The compilation of multicont.1.0.3 failed at "dune build -p multicont -j 71 @install".-> installed lwt.6.0.0#=== ERROR while compiling multicont.1.0.3 ====================================## context 2.5.0 | linux/x86_64 | ocaml-base-compiler.5.4.0 | git+file:///home/opam/opam-repository# path ~/.opam/5.4/.opam-switch/build/multicont.1.0.3# command ~/.opam/5.4/bin/dune build -p multicont -j 71 @install# exit-code 1# env-file ~/.opam/log/multicont-1-880c04.env# output-file ~/.opam/log/multicont-1-880c04.out### output #### File "lib/dune", lines 1-14, characters 0-317:# 1 | (library# 2 | (name multicont)# 3 | (public_name multicont)# ....# 12 | (mode native)# 13 | (flags :standard (:include c_native_flags.sexp))# 14 | (names multicont_stubs)))# (cd _build/default && /home/opam/.opam/5.4/bin/ocamlopt.opt -w -40 -g -shared -linkall -I lib -o lib/multicont.cmxs lib/multicont.cmxa)# /usr/sbin/ld: cannot find -lmulticont_stubs_native: No such file or directory# collect2: error: ld returned 1 exit status# File "caml_startup", line 1:# Error: Error during linking (exit code 1)<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>+- The following actions failed| - build multicont 1.0.3+-+- The following changes have been performed| - install base-bytes base| - install cppo 1.8.0| - install csexp 1.5.2| - install dune 3.20.2| - install dune-configurator 3.20.2| - install lwt 6.0.0| - install ocamlfind 1.9.8| - install ocplib-endian 1.2+-# To update the current shell environment, run: eval $(opam env)The former state can be restored with:/usr/bin/opam switch import "/home/opam/.opam/5.4/.opam-switch/backup/state-20260113204018.export""/usr/bin/env" "bash" "-c" "opam install $DEPS" failed with exit status 312026-01-13 20:41.41: Job failed: Failed: Build failed