2026-01-27 10:55.33: New job: test ocsigen/lwt https://github.com/ocsigen/lwt.git#refs/heads/deferred-wakeup (b20ad40423428915603c63bf36ea9f57e79c53a6) (linux-x86_64:ubuntu-22.04-4.14_opam-2.5) Base: ocaml/opam:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08 Opam project build To reproduce locally: git clone --recursive "https://github.com/ocsigen/lwt.git" -b "deferred-wakeup" && cd "lwt" && git reset --hard b20ad404 cat > Dockerfile <<'END-OF-DOCKERFILE' FROM ocaml/opam:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08 # ubuntu-22.04-4.14_opam-2.5 USER 1000:1000 ENV CLICOLOR_FORCE="1" ENV OPAMCOLOR="always" WORKDIR /src RUN sudo ln -f /usr/bin/opam-2.5 /usr/bin/opam RUN opam init --reinit -ni RUN uname -rs && opam exec -- ocaml -version && opam --version WORKDIR /src RUN sudo chown opam /src RUN cd ~/opam-repository && (git cat-file -e 873cb18c37b308713d11ad3894c4bb78d73fb3e7 || git fetch origin master) && git reset -q --hard 873cb18c37b308713d11ad3894c4bb78d73fb3e7 && git log --no-decorate -n1 --oneline && opam update -u COPY --chown=1000:1000 lwt_retry.opam lwt_react.opam lwt_ppx.opam lwt.opam ./ RUN opam pin add -yn lwt_retry.dev './' && \ opam pin add -yn lwt_react.dev './' && \ opam pin add -yn lwt_ppx.dev './' && \ opam pin add -yn lwt.dev './' RUN echo '(lang dune 3.0)' > './dune-project' ENV DEPS="base.v0.16.4 base-bigarray.base base-bytes.base base-threads.base base-unix.base bisect_ppx.2.8.3 cmdliner.1.3.0 cppo.1.8.0 csexp.1.5.2 dune.3.21.0 dune-configurator.3.21.0 ocaml.4.14.2 ocaml-base-compiler.4.14.2 ocaml-compiler-libs.v0.12.4 ocaml-config.2 ocaml-options-vanilla.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 ppx_derivers.1.2.1 ppx_here.v0.16.0 ppx_let.v0.16.0 ppxlib.0.35.0 react.1.2.2 sexplib0.v0.16.0 stdlib-shims.0.3.0 topkg.1.1.1" ENV CI="true" ENV OCAMLCI="true" RUN opam update --depexts && opam install --cli=2.5 --depext-only -y lwt_retry.dev lwt_react.dev lwt_ppx.dev lwt.dev $DEPS RUN opam install $DEPS COPY --chown=1000:1000 . /src RUN opam exec -- dune build @install @check @runtest && rm -rf _build END-OF-DOCKERFILE docker build . END-REPRO-BLOCK 2026-01-27 10:55.33: Using cache hint "ocsigen/lwt-ocaml/opam:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08-ubuntu-22.04-4.14_opam-2.5-177da2e5de974ccd97156e2e01baa047" 2026-01-27 10:55.33: Using OBuilder spec: ((from ocaml/opam:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08) (comment ubuntu-22.04-4.14_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 873cb18c37b308713d11ad3894c4bb78d73fb3e7 || git fetch origin master) && git reset -q --hard 873cb18c37b308713d11ad3894c4bb78d73fb3e7 && git log --no-decorate -n1 --oneline && opam update -u")) (copy (src lwt_retry.opam lwt_react.opam lwt_ppx.opam lwt.opam) (dst ./)) (run (network host) (shell "opam pin add -yn lwt_retry.dev './' && \ \nopam pin add -yn lwt_react.dev './' && \ \nopam pin add -yn lwt_ppx.dev './' && \ \nopam pin add -yn lwt.dev './'")) (run (network host) (shell "echo '(lang dune 3.0)' > './dune-project'")) (env DEPS "base.v0.16.4 base-bigarray.base base-bytes.base base-threads.base base-unix.base bisect_ppx.2.8.3 cmdliner.1.3.0 cppo.1.8.0 csexp.1.5.2 dune.3.21.0 dune-configurator.3.21.0 ocaml.4.14.2 ocaml-base-compiler.4.14.2 ocaml-compiler-libs.v0.12.4 ocaml-config.2 ocaml-options-vanilla.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 ppx_derivers.1.2.1 ppx_here.v0.16.0 ppx_let.v0.16.0 ppxlib.0.35.0 react.1.2.2 sexplib0.v0.16.0 stdlib-shims.0.3.0 topkg.1.1.1") (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_retry.dev lwt_react.dev lwt_ppx.dev lwt.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")) ) 2026-01-27 10:55.33: Waiting for resource in pool OCluster 2026-01-27 10:55.34: Waiting for worker… 2026-01-27 10:55.34: Got resource from pool OCluster Building on bremusa.ocamllabs.io hint: Using 'master' as the name for the initial branch. This default branch name hint: is subject to change. To configure the initial branch name to use in all hint: of your new repositories, which will suppress this warning, call: hint: hint: git config --global init.defaultBranch <name> hint: hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and hint: 'development'. The just-created branch can be renamed via this command: hint: hint: git branch -m <name> Initialised empty Git repository in /var/cache/obuilder/ocluster/git/lwt.git-265c42b55c0ad669a1515f10f86efc054ce5ad5f/.git/ HEAD is now at b20ad4042 rehaul (from ocaml/opam:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08) Unable to find image 'ocaml/opam:ubuntu-22.04-ocaml-4.14@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08' locally docker.io/ocaml/opam@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08: Pulling from ocaml/opam fbe89d1f4c16: Pulling fs layer fbe89d1f4c16: Waiting fbe89d1f4c16: Verifying Checksum fbe89d1f4c16: Download complete fbe89d1f4c16: Pull complete Digest: sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08 Status: Downloaded newer image for ocaml/opam@sha256:256ee90ca6270ef7e44931992e85d66b20c94b1f2e3fe70ad42e97ed1d5cca08 2026-01-27 11:06.08 ---> using "82c50a0cbf04f29b81010c51cd3ec548d69ed37c97c76d03cc86a5cf2c47a5d5" from cache /: (comment ubuntu-22.04-4.14_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")) 2026-01-27 11:06.08 ---> using "d8d96c87b6227f5242abf545502bad6a75c73eae7d79b373871ad3a7d8c45228" 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] y Format upgrade done. <><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><> [default] Initialised 2026-01-27 11:06.08 ---> using "d811c351465aee87f56e66bdf4ea1af2b8288714d1ea59d69c4f2cd442eda9e1" from cache /src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) Linux 6.8.0-90-generic The OCaml toplevel, version 4.14.2 2.5.0 2026-01-27 11:06.08 ---> using "635afcb073603434110c0b39c7baaa419ac6a3035cc12f4d7f2f0d922391170a" from cache /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-01-27 11:06.08 ---> using "e5b890cff0e1c742768a821ee6181eea03a625ad0cfd3ba68cc397ded410473e" from cache /src: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "cd ~/opam-repository && (git cat-file -e 873cb18c37b308713d11ad3894c4bb78d73fb3e7 || git fetch origin master) && git reset -q --hard 873cb18c37b308713d11ad3894c4bb78d73fb3e7 && git log --no-decorate -n1 --oneline && opam update -u")) 873cb18c37 Merge pull request #29216 from shonfeder/release-dune-3.21.0 <><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><> [default] synchronised from git+file:///home/opam/opam-repository Everything 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.5.4.0"), which will ask permission to downgrade or uninstall the conflicting packages. Nothing to do. # To update the current shell environment, run: eval $(opam env) 2026-01-27 11:06.08 ---> using "5573eefe0e769047d2e1640997e3f6938e3df9736116e7033eef44e6cccf8ae3" from cache /src: (copy (src lwt_retry.opam lwt_react.opam lwt_ppx.opam lwt.opam) (dst ./)) 2026-01-27 11:06.08 ---> saved as "75ba7040c51aeec78521304a43e79bc42bd15c9d29db05cb4d5127878f4f8578" /src: (run (network host) (shell "opam pin add -yn lwt_retry.dev './' && \ \nopam pin add -yn lwt_react.dev './' && \ \nopam pin add -yn lwt_ppx.dev './' && \ \nopam pin add -yn lwt.dev './'")) [lwt_retry.dev] synchronised (file:///src) lwt_retry is now pinned to file:///src (version dev) [lwt_react.dev] synchronised (file:///src) lwt_react is now pinned to file:///src (version dev) [lwt_ppx.dev] synchronised (file:///src) lwt_ppx is now pinned to file:///src (version dev) [lwt.dev] synchronised (file:///src) lwt is now pinned to file:///src (version dev) 2026-01-27 11:11.02 ---> saved as "ea0f87d7536b748e1a410fec4b1f863a2c2e9d0412f813fd5392f3b3f7945a8d" /src: (run (network host) (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-01-27 11:11.02 ---> saved as "05a338445af486e806849cdc625f3ffad355754fd44e1cf60e4e59aab3363f97" /src: (env DEPS "base.v0.16.4 base-bigarray.base base-bytes.base base-threads.base base-unix.base bisect_ppx.2.8.3 cmdliner.1.3.0 cppo.1.8.0 csexp.1.5.2 dune.3.21.0 dune-configurator.3.21.0 ocaml.4.14.2 ocaml-base-compiler.4.14.2 ocaml-compiler-libs.v0.12.4 ocaml-config.2 ocaml-options-vanilla.1 ocamlbuild.0.16.1 ocamlfind.1.9.8 ocplib-endian.1.2 ppx_derivers.1.2.1 ppx_here.v0.16.0 ppx_let.v0.16.0 ppxlib.0.35.0 react.1.2.2 sexplib0.v0.16.0 stdlib-shims.0.3.0 topkg.1.1.1") /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_retry.dev lwt_react.dev lwt_ppx.dev lwt.dev $DEPS")) + /usr/bin/sudo "apt-get" "update" - Get:1 http://security.ubuntu.com/ubuntu jammy-security InRelease [129 kB] - Hit:2 http://archive.ubuntu.com/ubuntu jammy InRelease - Get:3 http://archive.ubuntu.com/ubuntu jammy-updates InRelease [128 kB] - Get:4 http://archive.ubuntu.com/ubuntu jammy-backports InRelease [127 kB] - Get:5 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages [3640 kB] - Get:6 http://security.ubuntu.com/ubuntu jammy-security/multiverse amd64 Packages [61.5 kB] - Get:7 http://security.ubuntu.com/ubuntu jammy-security/universe amd64 Packages [1293 kB] - Get:8 http://archive.ubuntu.com/ubuntu jammy-updates/universe amd64 Packages [1604 kB] - Get:9 http://archive.ubuntu.com/ubuntu jammy-updates/restricted amd64 Packages [6498 kB] - Get:10 http://archive.ubuntu.com/ubuntu jammy-updates/multiverse amd64 Packages [70.9 kB] - Get:11 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages [3971 kB] - Fetched 17.5 MB in 1s (13.8 MB/s) - Reading package lists... - <><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><> [lwt.dev] synchronised (file:///src) [lwt_ppx.dev] synchronised (file:///src) [lwt_react.dev] synchronised (file:///src) [lwt_retry.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 2). [NOTE] Package ocaml-base-compiler is already installed (current version is 4.14.2). [NOTE] Package ocaml is already installed (current version is 4.14.2). [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-bigarray is already installed (current version is base). # To update the current shell environment, run: eval $(opam env) 2026-01-27 11:11.17 ---> saved as "10320f449e18c51a110f1218ea5611111909bfca3c8d126d9ef300a2eb7723a3" /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 2). [NOTE] Package ocaml-base-compiler is already installed (current version is 4.14.2). [NOTE] Package ocaml is already installed (current version is 4.14.2). [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-bigarray is already installed (current version is base). The following actions will be performed: === install 20 packages - install base v0.16.4 - install base-bytes base - install bisect_ppx 2.8.3 - install cmdliner 1.3.0 - install cppo 1.8.0 - install csexp 1.5.2 - install dune 3.21.0 - install dune-configurator 3.21.0 - install ocaml-compiler-libs v0.12.4 - install ocamlbuild 0.16.1 - install ocamlfind 1.9.8 - install ocplib-endian 1.2 - install ppx_derivers 1.2.1 - install ppx_here v0.16.0 - install ppx_let v0.16.0 - install ppxlib 0.35.0 - install react 1.2.2 - install sexplib0 v0.16.0 - install stdlib-shims 0.3.0 - install topkg 1.1.1 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> retrieved base.v0.16.4 (cached) -> retrieved bisect_ppx.2.8.3 (cached) -> retrieved cmdliner.1.3.0 (cached) -> retrieved cppo.1.8.0 (cached) -> retrieved csexp.1.5.2 (cached) -> retrieved ocaml-compiler-libs.v0.12.4 (cached) -> retrieved ocamlbuild.0.16.1 (cached) -> retrieved ocamlfind.1.9.8 (cached) -> retrieved ocplib-endian.1.2 (cached) -> retrieved ppx_derivers.1.2.1 (cached) -> retrieved ppx_here.v0.16.0 (cached) -> retrieved ppx_let.v0.16.0 (cached) -> retrieved react.1.2.2 (cached) -> retrieved sexplib0.v0.16.0 (cached) -> retrieved stdlib-shims.0.3.0 (cached) -> retrieved topkg.1.1.1 (cached) -> retrieved ppxlib.0.35.0 (cached) -> retrieved dune.3.21.0, dune-configurator.3.21.0 (cached) -> installed cmdliner.1.3.0 -> installed ocamlbuild.0.16.1 -> installed ocamlfind.1.9.8 -> installed base-bytes.base -> installed topkg.1.1.1 -> installed react.1.2.2 -> installed dune.3.21.0 -> installed ppx_derivers.1.2.1 -> installed stdlib-shims.0.3.0 -> installed csexp.1.5.2 -> installed cppo.1.8.0 -> installed ocaml-compiler-libs.v0.12.4 -> installed sexplib0.v0.16.0 -> installed ocplib-endian.1.2 -> installed dune-configurator.3.21.0 -> installed base.v0.16.4 -> installed ppxlib.0.35.0 -> installed ppx_here.v0.16.0 -> installed bisect_ppx.2.8.3 -> installed ppx_let.v0.16.0 Done. # To update the current shell environment, run: eval $(opam env) 2026-01-27 11:22.01 ---> saved as "5df3bc6feb11d8ce0103b2aaf3a54fd48266e5be34d7cf2bd245ff13b608dad7" /src: (copy (src .) (dst /src)) 2026-01-27 11:22.01 ---> saved as "5dddd2f3b60069dd89c883a395f7d7b873f743faab7b2811847b7b042013ffc0" /src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build")) (cd _build/default/test/retry && ./main.exe) Testing library 'retry'... .............. Ok. 14 tests ran, 0 tests skipped in 0.01 seconds (cd _build/default/test/ppx && ./main.exe) Testing library 'ppx'... ................ Ok. 16 tests ran, 0 tests skipped in 1.20 seconds File "test/react/dune", line 2, characters 7-11: 2 | (name main) ^^^^ (cd _build/default/test/react && ./main.exe) Testing library 'react'... F....... Failures in test suite 'lwt_event': Test 'to_stream' produced 'false' (cd _build/default/test/unix && ./main.exe) Testing library 'unix'... .....................................SSSSS..............................................................................................................SSSS................................................................................... Ok. 230 tests ran, 9 tests skipped in 6.31 seconds 2026-01-27 11:55.34: Cancelling: Timeout (60.0 minutes) Job cancelled 2026-01-27 11:55.59: Timeout (60.0 minutes)