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-25.10-4.14_opam-2.5) Base: ocaml/opam:ubuntu-25.10-ocaml-4.14@sha256:f196fdde96e2d2ab463174a3fd909d35d2174726cd99ad8d090aae5fc21672ec 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-25.10-ocaml-4.14@sha256:f196fdde96e2d2ab463174a3fd909d35d2174726cd99ad8d090aae5fc21672ec # ubuntu-25.10-4.14_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-25.10-ocaml-4.14@sha256:f196fdde96e2d2ab463174a3fd909d35d2174726cd99ad8d090aae5fc21672ec-ubuntu-25.10-4.14_opam-2.5-177da2e5de974ccd97156e2e01baa047" 2026-01-27 10:55.33: Using OBuilder spec: ((from ocaml/opam:ubuntu-25.10-ocaml-4.14@sha256:f196fdde96e2d2ab463174a3fd909d35d2174726cd99ad8d090aae5fc21672ec) (comment ubuntu-25.10-4.14_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 clete HEAD is now at 141d187d1 lwt_unix_stubs.c: fix races reported by TSan HEAD is now at b20ad4042 rehaul (from ocaml/opam:ubuntu-25.10-ocaml-4.14@sha256:f196fdde96e2d2ab463174a3fd909d35d2174726cd99ad8d090aae5fc21672ec) Unable to find image 'ocaml/opam:ubuntu-25.10-ocaml-4.14@sha256:f196fdde96e2d2ab463174a3fd909d35d2174726cd99ad8d090aae5fc21672ec' locally docker.io/ocaml/opam@sha256:f196fdde96e2d2ab463174a3fd909d35d2174726cd99ad8d090aae5fc21672ec: Pulling from ocaml/opam 16c195d4c5e9: Already exists ea8d6f284f52: Already exists a590f1caf60c: Already exists 95a0aba17fe6: Already exists 24604fb30e30: Already exists bb7bc1b8d84e: Already exists b52bcdd4741a: Already exists 8c668707afec: Already exists c4692dd3f67a: Already exists 5eaf747da0d4: Already exists dacd9c5006da: Already exists f4da334a65ba: Already exists ac7668965f73: Already exists 34d1263af20a: Already exists a86b2aea8581: Already exists 32d4d471ed96: Already exists b77ed416f3dc: Already exists b77ed416f3dc: Already exists d1055a5d5025: Already exists 202c9ab5b2cc: Already exists 5c7364b10079: Already exists f1b0581b7244: Already exists 4f4fb700ef54: Already exists 9fa3330063e0: Already exists 2713ff50a5c7: Already exists 42b31df89324: Already exists cccb2a33229d: Already exists f9eb1b0ba386: Already exists cfa1b801ea0b: Already exists 731be0d7062d: Already exists 75483806616d: Already exists 61d580994fd0: Already exists 369979efbe7c: Already exists 3dcb2f554fbb: Already exists e1eaa3dbc066: Already exists bb45476b0f8e: Already exists 530fce115371: Already exists fb7cddf53135: Already exists fd3c4ec2a132: Already exists 809886565a24: Already exists b7adeb70e5d2: Already exists eadd9f1803a3: Pulling fs layer 0bebb82b5512: Pulling fs layer 88ef2e8c2c2e: Pulling fs layer c0847e5b776d: Pulling fs layer 6832235b99fe: Pulling fs layer c0847e5b776d: Waiting 6832235b99fe: Waiting 88ef2e8c2c2e: Verifying Checksum 88ef2e8c2c2e: Download complete c0847e5b776d: Download complete 6832235b99fe: Verifying Checksum 6832235b99fe: Download complete eadd9f1803a3: Verifying Checksum eadd9f1803a3: Download complete eadd9f1803a3: Pull complete 0bebb82b5512: Verifying Checksum 0bebb82b5512: Download complete 0bebb82b5512: Pull complete 88ef2e8c2c2e: Pull complete c0847e5b776d: Pull complete 6832235b99fe: Pull complete Digest: sha256:f196fdde96e2d2ab463174a3fd909d35d2174726cd99ad8d090aae5fc21672ec Status: Downloaded newer image for ocaml/opam@sha256:f196fdde96e2d2ab463174a3fd909d35d2174726cd99ad8d090aae5fc21672ec 2026-01-27 10:57.01 ---> saved as "75df70da953d671714cf7970335f8c27515d2f02b005faf9feb62dfc11340dab" /: (comment ubuntu-25.10-4.14_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 10:57.01 ---> saved as "0868f6818629c9b1fa57e9f1c50087daaf981ede9b3ef45b1cac6a45ce3b4ca0" /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 ><><><><><><><><><><><><><><><><><><><><><><><><><><> [ERROR] Could not update repository "ocaml-patches-overlay": "/usr/bin/git fetch -q" exited with code 128 "fatal: unable to access 'https://github.com/ocurrent/opam-repository/': Could not resolve host: github.com" [default] Initialised 2026-01-27 10:57.33 ---> saved as "89677c0f84fccc82a17b3a8527b0294b759518be030b5c5a65a2fc0031b0a85c" /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 10:57.33 ---> saved as "296a891161693ac3543b75e3b7cd7f7cf6580366f514416736fdfe515b00ffd0" /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-01-27 10:57.33 ---> saved as "fcaed8e9cab88da0ffb726db9094aacfbc5c85d997ff47780dee0c4350554c52" /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")) From https://github.com/ocaml/opam-repository * branch master -> FETCH_HEAD a6b2f19780..e4bc1b0e55 master -> origin/master 873cb18c37 Merge pull request #29216 from shonfeder/release-dune-3.21.0 <><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><> [default] synchronised from git+file:///home/opam/opam-repository [ocaml-patches-overlay] synchronised from git+https://github.com/ocurrent/opam-repository#patches The following actions will be performed: === recompile 2 packages - recompile ocaml 4.14.2 [upstream or system changes] - recompile opam-depext 1.2.3 [uses ocaml] <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> retrieved opam-depext.1.2.3 (cached) -> removed opam-depext.1.2.3 -> removed ocaml.4.14.2 -> installed ocaml.4.14.2 -> installed opam-depext.1.2.3 Done. <><> opam-depext.1.2.3 installed successfully <><><><><><><><><><><><><><><><><> => opam-depext is unnecessary when used with opam >= 2.1. Please use opam install directly instead # To update the current shell environment, run: eval $(opam env) 2026-01-27 10:58.15 ---> saved as "39defe92d95778e17f342e83d7489986e082573b183e1145409ad3d2115053ae" /src: (copy (src lwt_retry.opam lwt_react.opam lwt_ppx.opam lwt.opam) (dst ./)) 2026-01-27 10:58.15 ---> saved as "fa9ef14614d1a2922fb2595b307a78f9ffba3574892752c7d7abfbe353e64264" /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 10:58.21 ---> saved as "24c77a765647d33b8bdda0c99be0966a34d6f30ec9808ad9e6944ad43895b9e6" /src: (run (network host) (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-01-27 10:58.21 ---> saved as "52baa422e2affc920761b15627573f89516b5c8778eb61c46fe4572f89834f7b" /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 questing-security InRelease [136 kB] - Get:2 http://security.ubuntu.com/ubuntu questing-security/restricted amd64 Packages [120 kB] - Get:3 http://security.ubuntu.com/ubuntu questing-security/main amd64 Packages [184 kB] - Get:4 http://security.ubuntu.com/ubuntu questing-security/universe amd64 Packages [120 kB] - Hit:5 http://archive.ubuntu.com/ubuntu questing InRelease - Get:6 http://archive.ubuntu.com/ubuntu questing-updates InRelease [136 kB] - Get:7 http://archive.ubuntu.com/ubuntu questing-backports InRelease [133 kB] - Get:8 http://archive.ubuntu.com/ubuntu questing-updates/main amd64 Packages [310 kB] - Get:9 http://archive.ubuntu.com/ubuntu questing-updates/multiverse amd64 Packages [3223 B] - Get:10 http://archive.ubuntu.com/ubuntu questing-updates/restricted amd64 Packages [159 kB] - Get:11 http://archive.ubuntu.com/ubuntu questing-updates/universe amd64 Packages [178 kB] - Fetched 1479 kB in 0s (3710 kB/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 10:58.30 ---> saved as "86ff1aae260d5614c06a6678d7e75ea5a827c3627d6d8e9bffd56d4381c8cc23" /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 10:59.19 ---> saved as "e1bea08f5b186bf05304fb0cdb6e959d6ef6b558184d38e11824162837bb9a09" /src: (copy (src .) (dst /src)) 2026-01-27 10:59.20 ---> saved as "6263a0b2c1f4dc918995f1d7788d8bb46a64ffdc827278c327ea0846bff33505" /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 11:55.34: Timeout (60.0 minutes)