2026-03-23 09:27.07: New job: test ocaml-multicore/lwt_eio https://github.com/ocaml-multicore/lwt_eio.git#refs/heads/master (e3679c5296dd0aacac825735dab45ded26d55821) (linux-arm64:debian-13-5.4_arm64_opam-2.5)Base: ocaml/opam:debian-13-ocaml-5.4@sha256:c1830cb89505d82ce4f4b4097f1d002748603cb00382aa65e938776c377fa13aOpam project buildTo reproduce locally:git clone --recursive "https://github.com/ocaml-multicore/lwt_eio.git" -b "master" && cd "lwt_eio" && git reset --hard e3679c52cat > Dockerfile <<'END-OF-DOCKERFILE'FROM ocaml/opam:debian-13-ocaml-5.4@sha256:c1830cb89505d82ce4f4b4097f1d002748603cb00382aa65e938776c377fa13a# debian-13-5.4_arm64_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 b479391466e5245dda12ec6a6de5f4b13b6d603f || git fetch origin master) && git reset -q --hard b479391466e5245dda12ec6a6de5f4b13b6d603f && git log --no-decorate -n1 --oneline && opam update -uCOPY --chown=1000:1000 lwt_eio.opam ./RUN opam pin add -yn lwt_eio.dev './'RUN echo '(lang dune 3.0)' > './dune-project'ENV DEPS="astring.0.8.5 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.2.1.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.0 dune-configurator.3.22.0 eio.1.3 eio_linux.1.3 eio_main.1.3 eio_posix.1.3 fmt.0.11.0 hmap.0.8.1 iomux.0.4 logs.0.10.0 lwt.6.1.1 lwt-dllist.1.1.0 mdx.2.5.1 mtime.2.1.0 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.0.4 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 psq.0.2.1 re.1.14.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.1.1 uring.2.7.0"ENV CI="true"ENV OCAMLCI="true"RUN opam update --depexts && opam install --cli=2.5 --depext-only -y lwt_eio.dev $DEPSRUN opam install $DEPSCOPY --chown=1000:1000 . /srcRUN opam exec -- dune build @install @check @runtest && rm -rf _buildEND-OF-DOCKERFILEdocker build .END-REPRO-BLOCK2026-03-23 09:27.07: Using cache hint "ocaml-multicore/lwt_eio-ocaml/opam:debian-13-ocaml-5.4@sha256:c1830cb89505d82ce4f4b4097f1d002748603cb00382aa65e938776c377fa13a-debian-13-5.4_arm64_opam-2.5-e8c1b20f09074fcd962a3f10a4b561f6"2026-03-23 09:27.07: Using OBuilder spec:((from ocaml/opam:debian-13-ocaml-5.4@sha256:c1830cb89505d82ce4f4b4097f1d002748603cb00382aa65e938776c377fa13a)(comment debian-13-5.4_arm64_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 b479391466e5245dda12ec6a6de5f4b13b6d603f || git fetch origin master) && git reset -q --hard b479391466e5245dda12ec6a6de5f4b13b6d603f && git log --no-decorate -n1 --oneline && opam update -u"))(copy (src lwt_eio.opam) (dst ./))(run (network host)(shell "opam pin add -yn lwt_eio.dev './'"))(run (shell "echo '(lang dune 3.0)' > './dune-project'"))(env DEPS "astring.0.8.5 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.2.1.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.0 dune-configurator.3.22.0 eio.1.3 eio_linux.1.3 eio_main.1.3 eio_posix.1.3 fmt.0.11.0 hmap.0.8.1 iomux.0.4 logs.0.10.0 lwt.6.1.1 lwt-dllist.1.1.0 mdx.2.5.1 mtime.2.1.0 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.0.4 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 psq.0.2.1 re.1.14.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.1.1 uring.2.7.0")(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 lwt_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")))2026-03-23 09:27.07: Waiting for resource in pool OCluster2026-03-23 09:27.07: Waiting for worker…2026-03-23 09:48.29: Got resource from pool OClusterBuilding on ocaml-1.osuosl.ci.devAll commits already cachedHEAD is now at e3679c5 Merge pull request #30 from talex5/examples(from ocaml/opam:debian-13-ocaml-5.4@sha256:c1830cb89505d82ce4f4b4097f1d002748603cb00382aa65e938776c377fa13a)Unable to find image 'ocaml/opam:debian-13-ocaml-5.4@sha256:c1830cb89505d82ce4f4b4097f1d002748603cb00382aa65e938776c377fa13a' locallydocker.io/ocaml/opam@sha256:c1830cb89505d82ce4f4b4097f1d002748603cb00382aa65e938776c377fa13a: Pulling from ocaml/opamac9148dc57ca: Already exists7888403f6ebd: Already existsc624d8e138d3: Already existsbae5329cb92a: Already exists6228156e24ec: Already existsd851fec6b77f: Already exists45e3afcdcfef: Already existsb3e7f2150c0a: Already exists91048a8ba3a7: Already exists26a15cffb83a: Already exists3c2f2520de0f: Already exists9f731cc5daa6: Already exists0809377d5f3c: Already existsec4e42e8f98c: Already exists065e3401ccf2: Already existsbce3ceded749: Already existsc4a4a6ab703b: Already existsaa84bc2cf05b: Already exists0fb96351134e: Already existsa1735f92ccde: Already existsdce836972d90: Already exists8a0c641e2184: Already exists4f4fb700ef54: Already exists44a2b50d619a: Already existse27f63ab21e8: Already exists826c3a0f7d41: Already exists7fe544c7b3e6: Already existsefa4af957d6d: Already existsa2fa2f09a7e4: Already exists3e0efbdba3cc: Already exists4f299997ffd7: Already existsf868b4e81e65: Already exists87577251fd14: Already exists5e9e2e42ec71: Already exists99812197be51: Already exists8b48f92b9c03: Already exists6336fa3f0edf: Already existsf03483f6ff47: Already exists26c2642c44cf: Already exists35e7bc3e512e: Already existsfb2e4e264f0c: Already existsaa2081614483: Pulling fs layer526a1409cb54: Pulling fs layer3a2eac8aba41: Pulling fs layer663c0b5229f0: Pulling fs layerf07447d54e12: Pulling fs layer663c0b5229f0: Waiting8eca58e2e466: Pulling fs layer269ed2830268: Pulling fs layer269ed2830268: Waitingf07447d54e12: Waiting8eca58e2e466: Waiting526a1409cb54: Download completeaa2081614483: Verifying Checksumaa2081614483: Download complete3a2eac8aba41: Verifying Checksum3a2eac8aba41: Download completef07447d54e12: Download complete8eca58e2e466: Verifying Checksum8eca58e2e466: Download complete269ed2830268: Verifying Checksum269ed2830268: Download complete663c0b5229f0: Verifying Checksum663c0b5229f0: Download completeaa2081614483: Pull complete526a1409cb54: Pull complete3a2eac8aba41: Pull complete663c0b5229f0: Pull completef07447d54e12: Pull complete8eca58e2e466: Pull complete269ed2830268: Pull completeDigest: sha256:c1830cb89505d82ce4f4b4097f1d002748603cb00382aa65e938776c377fa13aStatus: Downloaded newer image for ocaml/opam@sha256:c1830cb89505d82ce4f4b4097f1d002748603cb00382aa65e938776c377fa13a2026-03-23 09:48.30 ---> using "d3aef2d93064c0f54a54ca210e09e3e24634a77abbb58d114299d90d4843ce0d" from cache/: (comment debian-13-5.4_arm64_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"))2026-03-23 09:48.30 ---> using "26fbe6c6f6005ce5948b37f283839b24f93e5ed4d96bbb09998ab7c0ef2162df" 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.Continue? [Y/n] yThis 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.[NOTE] The 'jobs' option was reset, its value was 79 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=79 --globalFormat upgrade done.<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>[default] Initialised2026-03-23 09:48.30 ---> using "7c4abe0c556bf71da30fbdbef06c92f36bad545e3ab8919a0691b5d347cee360" from cache/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))Linux 6.8.0-101-genericThe OCaml toplevel, version 5.4.02.5.02026-03-23 09:48.30 ---> using "6cb0208b5c98d92a52f29957d4c163cc844d1602926f5fdab97837e3ced98827" from cache/src: (workdir /src)/src: (run (shell "sudo chown opam /src"))2026-03-23 09:48.30 ---> using "d6529484688c91d5d67aa4125460c67769e01fb0c9a9c84795637f03b8c38f5b" from cache/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "cd ~/opam-repository && (git cat-file -e b479391466e5245dda12ec6a6de5f4b13b6d603f || git fetch origin master) && git reset -q --hard b479391466e5245dda12ec6a6de5f4b13b6d603f && git log --no-decorate -n1 --oneline && opam update -u"))From https://github.com/ocaml/opam-repository* branch master -> FETCH_HEADffb54b9bdd..63b7ba71be master -> origin/masterb479391466 Merge pull request #29567 from mtelvers/opam-publish-ocaml-version.4.0.4<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>[default] synchronised from git+file:///home/opam/opam-repositoryEverything as up-to-date as possible (run with --verbose to show unavailable upgrades).However, 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)2026-03-23 09:48.30 ---> using "3a1901976fdab439586633c29aed3208ece059d0b89287d3a3d413acdcb72e23" from cache/src: (copy (src lwt_eio.opam) (dst ./))2026-03-23 09:48.30 ---> saved as "487e6fd82e3135ff752e84c913ec3b8aaae1375332353750c64789cb8f1f4f17"/src: (run (network host)(shell "opam pin add -yn lwt_eio.dev './'"))[lwt_eio.dev] synchronised (file:///src)lwt_eio is now pinned to file:///src (version dev)2026-03-23 09:48.33 ---> saved as "2669ba0b00570edd695b171c525f029eae088f6a2cab32e88192cf066845fb48"/src: (run (shell "echo '(lang dune 3.0)' > './dune-project'"))2026-03-23 09:48.34 ---> saved as "861f87e511357c16c2699fb0e7a9f811216e707f6756160919bc7da9f4eddd67"/src: (env DEPS "astring.0.8.5 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.2.1.0 cppo.1.8.0 csexp.1.5.2 cstruct.6.2.0 domain-local-await.1.0.1 dune.3.22.0 dune-configurator.3.22.0 eio.1.3 eio_linux.1.3 eio_main.1.3 eio_posix.1.3 fmt.0.11.0 hmap.0.8.1 iomux.0.4 logs.0.10.0 lwt.6.1.1 lwt-dllist.1.1.0 mdx.2.5.1 mtime.2.1.0 ocaml.5.4.0 ocaml-base-compiler.5.4.0 ocaml-compiler.5.4.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.4.0.4 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 optint.0.3.0 psq.0.2.1 re.1.14.0 result.1.5 seq.base thread-table.1.0.0 topkg.1.1.1 uring.2.7.0")/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 lwt_eio.dev $DEPS"))+ /usr/bin/sudo "apt-get" "update"- Get:1 http://deb.debian.org/debian trixie InRelease [140 kB]- 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 trixie/main arm64 Packages [9607 kB]- Get:5 http://deb.debian.org/debian-security trixie-security/main arm64 Packages [114 kB]- Fetched 9952 kB in 1s (8189 kB/s)- Reading package lists...-<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>[lwt_eio.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)2026-03-23 09:48.53 ---> saved as "236103fb64a6173e350e761d2b1e6c029ecf899de77dad0e532d3b322c7335c1"/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 35 packages- install astring 0.8.5- install base-bytes base- install bigstringaf 0.10.0- install camlp-streams 5.0.1- install cmdliner 2.1.0- install cppo 1.8.0- install csexp 1.5.2- install cstruct 6.2.0- install domain-local-await 1.0.1- install dune 3.22.0- install dune-configurator 3.22.0- install eio 1.3- install eio_linux 1.3- install eio_main 1.3- install eio_posix 1.3- install fmt 0.11.0- install hmap 0.8.1- install iomux 0.4- install logs 0.10.0- install lwt 6.1.1- install lwt-dllist 1.1.0- install mdx 2.5.1- install mtime 2.1.0- install ocaml-version 4.0.4- install ocamlbuild 0.16.1- install ocamlfind 1.9.8- install ocplib-endian 1.2- install optint 0.3.0- install psq 0.2.1- install re 1.14.0- install result 1.5- install seq base- install thread-table 1.0.0- install topkg 1.1.1- install uring 2.7.0<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>-> retrieved astring.0.8.5 (cached)-> retrieved bigstringaf.0.10.0 (cached)-> retrieved camlp-streams.5.0.1 (cached)-> retrieved cppo.1.8.0 (cached)-> retrieved cmdliner.2.1.0 (cached)-> retrieved csexp.1.5.2 (cached)-> retrieved cstruct.6.2.0 (cached)-> retrieved domain-local-await.1.0.1 (cached)-> retrieved fmt.0.11.0 (cached)-> retrieved hmap.0.8.1 (cached)-> retrieved eio.1.3, eio_linux.1.3, eio_main.1.3, eio_posix.1.3 (cached)-> retrieved iomux.0.4 (cached)-> retrieved logs.0.10.0 (cached)-> retrieved lwt-dllist.1.1.0 (cached)-> retrieved lwt.6.1.1 (cached)-> retrieved mdx.2.5.1 (cached)-> retrieved mtime.2.1.0 (cached)-> retrieved ocaml-version.4.0.4 (cached)-> retrieved ocamlbuild.0.16.1 (cached)-> retrieved ocamlfind.1.9.8 (cached)-> retrieved dune.3.22.0, dune-configurator.3.22.0 (cached)-> retrieved ocplib-endian.1.2 (cached)-> retrieved optint.0.3.0 (cached)-> retrieved psq.0.2.1 (cached)-> retrieved seq.base (cached)-> retrieved re.1.14.0 (cached)-> retrieved result.1.5 (cached)-> retrieved thread-table.1.0.0 (cached)-> retrieved topkg.1.1.1 (cached)-> installed cmdliner.2.1.0-> installed seq.base-> retrieved uring.2.7.0 (cached)-> installed ocamlfind.1.9.8-> installed base-bytes.base-> installed ocamlbuild.0.16.1-> installed topkg.1.1.1-> installed hmap.0.8.1-> installed fmt.0.11.0-> installed mtime.2.1.0-> installed astring.0.8.5-> installed dune.3.22.0-> installed lwt-dllist.1.1.0-> installed ocaml-version.4.0.4-> installed csexp.1.5.2-> installed camlp-streams.5.0.1-> installed cppo.1.8.0-> installed cstruct.6.2.0-> installed optint.0.3.0-> installed psq.0.2.1-> installed re.1.14.0-> installed result.1.5-> installed thread-table.1.0.0-> installed ocplib-endian.1.2-> installed dune-configurator.3.22.0-> installed domain-local-await.1.0.1-> installed bigstringaf.0.10.0-> installed iomux.0.4-> installed uring.2.7.0-> installed eio.1.3-> installed lwt.6.1.1-> installed eio_linux.1.3-> installed logs.0.10.0-> installed eio_posix.1.3-> installed eio_main.1.3-> installed mdx.2.5.1Done.# To update the current shell environment, run: eval $(opam env)2026-03-23 09:50.21 ---> saved as "3660cff996ae8e67fdb8d004e01816d69d80bfba7e4103ee27e4549d404ce1a1"/src: (copy (src .) (dst /src))2026-03-23 09:50.22 ---> saved as "9d6242ea6c196125121a12294859762f3b67522bbb7640dc6351a61b3133072b"/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))(cd _build/default && /home/opam/.opam/5.4/bin/ocamlc.opt -w @1..3@5..28@30..39@43@46..47@49..57@61..62@67@69-40 -strict-sequence -strict-formats -short-paths -keep-locs -g -bin-annot -bin-annot-occurrences -I lib/.lwt_eio.objs/byte -I /home/opam/.opam/5.4/lib/bigstringaf -I /home/opam/.opam/5.4/lib/bytes -I /home/opam/.opam/5.4/lib/cstruct -I /home/opam/.opam/5.4/lib/domain-local-await -I /home/opam/.opam/5.4/lib/eio -I /home/opam/.opam/5.4/lib/eio/core -I /home/opam/.opam/5.4/lib/eio/runtime_events -I /home/opam/.opam/5.4/lib/eio/unix -I /home/opam/.opam/5.4/lib/eio/utils -I /home/opam/.opam/5.4/lib/fmt -I /home/opam/.opam/5.4/lib/hmap -I /home/opam/.opam/5.4/lib/lwt -I /home/opam/.opam/5.4/lib/lwt-dllist -I /home/opam/.opam/5.4/lib/lwt/unix -I /home/opam/.opam/5.4/lib/mtime -I /home/opam/.opam/5.4/lib/mtime/clock -I /home/opam/.opam/5.4/lib/ocaml/runtime_events -I /home/opam/.opam/5.4/lib/ocaml/threads -I /home/opam/.opam/5.4/lib/ocaml/unix -I /home/opam/.opam/5.4/lib/ocplib-endian -I /home/opam/.opam/5.4/lib/ocplib-endian/bigstring -I /home/opam/.opam/5.4/lib/optint -I /home/opam/.opam/5.4/lib/psq -I /home/opam/.opam/5.4/lib/seq -I /home/opam/.opam/5.4/lib/thread-table -cmi-file lib/.lwt_eio.objs/byte/lwt_eio.cmi -no-alias-deps -opaque -o lib/.lwt_eio.objs/byte/lwt_eio.cmo -c -impl lib/lwt_eio.ml)File "lib/lwt_eio.ml", lines 126-174, characters 29-3:126 | .............................object127 | inherit Lwt_engine.abstract128 |129 | method private cleanup =130 | try Switch.fail sw Exit...171 |172 | method! fork =173 | is_forked := true174 | endError: This object has virtual methods.The following methods are virtual : id(cd _build/default && /home/opam/.opam/5.4/bin/ocamlopt.opt -w @1..3@5..28@30..39@43@46..47@49..57@61..62@67@69-40 -strict-sequence -strict-formats -short-paths -keep-locs -g -I lib/.lwt_eio.objs/byte -I lib/.lwt_eio.objs/native -I /home/opam/.opam/5.4/lib/bigstringaf -I /home/opam/.opam/5.4/lib/bytes -I /home/opam/.opam/5.4/lib/cstruct -I /home/opam/.opam/5.4/lib/domain-local-await -I /home/opam/.opam/5.4/lib/eio -I /home/opam/.opam/5.4/lib/eio/core -I /home/opam/.opam/5.4/lib/eio/runtime_events -I /home/opam/.opam/5.4/lib/eio/unix -I /home/opam/.opam/5.4/lib/eio/utils -I /home/opam/.opam/5.4/lib/fmt -I /home/opam/.opam/5.4/lib/hmap -I /home/opam/.opam/5.4/lib/lwt -I /home/opam/.opam/5.4/lib/lwt-dllist -I /home/opam/.opam/5.4/lib/lwt/unix -I /home/opam/.opam/5.4/lib/mtime -I /home/opam/.opam/5.4/lib/mtime/clock -I /home/opam/.opam/5.4/lib/ocaml/runtime_events -I /home/opam/.opam/5.4/lib/ocaml/threads -I /home/opam/.opam/5.4/lib/ocaml/unix -I /home/opam/.opam/5.4/lib/ocplib-endian -I /home/opam/.opam/5.4/lib/ocplib-endian/bigstring -I /home/opam/.opam/5.4/lib/optint -I /home/opam/.opam/5.4/lib/psq -I /home/opam/.opam/5.4/lib/seq -I /home/opam/.opam/5.4/lib/thread-table -cmi-file lib/.lwt_eio.objs/byte/lwt_eio.cmi -no-alias-deps -opaque -o lib/.lwt_eio.objs/native/lwt_eio.cmx -c -impl lib/lwt_eio.ml)File "lib/lwt_eio.ml", lines 126-174, characters 29-3:126 | .............................object127 | inherit Lwt_engine.abstract128 |129 | method private cleanup =130 | try Switch.fail sw Exit...171 |172 | method! fork =173 | is_forked := true174 | endError: This object has virtual methods.The following methods are virtual : id"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 12026-03-23 09:50.31: Job failed: Failed: Build failed