2026-04-25 17:23.21: New job: test ygrek/ocaml-snappy https://github.com/ygrek/ocaml-snappy.git#refs/heads/master (329a58d03ad5b3d6fa131cafbb8de0eb83d22a81) (linux-x86_64:ubuntu-24.04-5.4_opam-2.5) Base: ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b Opam project build To reproduce locally: git clone --recursive "https://github.com/ygrek/ocaml-snappy.git" -b "master" && cd "ocaml-snappy" && git reset --hard 329a58d0 cat > Dockerfile <<'END-OF-DOCKERFILE' FROM ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b # ubuntu-24.04-5.4_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 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 || git fetch origin master) && git reset -q --hard 5f7bb1a6e69f1ea15d8b2b08eeaa70a162c6fd41 && git log --no-decorate -n1 --oneline && opam update -u COPY --chown=1000:1000 snappy.opam ./ RUN opam pin add -yn snappy.dev './' RUN echo '(lang dune 3.0)' > './dune-project' ENV DEPS="base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base conf-snappy.1 dune.3.22.2 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-options-vanilla.1" ENV CI="true" ENV OCAMLCI="true" RUN opam update --depexts && opam install --cli=2.5 --depext-only -y snappy.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 2026-04-25 17:23.21: Using cache hint "ygrek/ocaml-snappy-ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b-ubuntu-24.04-5.4_opam-2.5-8a0d452280b50bf4fc1a59715eb423c5" 2026-04-25 17:23.21: Using OBuilder spec: ((from ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b) (comment ubuntu-24.04-5.4_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 snappy.opam) (dst ./)) (run (network host) (shell "opam pin add -yn snappy.dev './'")) (run (shell "echo '(lang dune 3.0)' > './dune-project'")) (env DEPS "base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base conf-snappy.1 dune.3.22.2 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-options-vanilla.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 snappy.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")) ) 2026-04-25 17:23.21: Waiting for resource in pool OCluster 2026-04-25 17:29.35: Waiting for worker… 2026-04-25 17:32.48: Got resource from pool OCluster Building on eumache.caelum.ci.dev All commits already cached HEAD is now at 329a58d release 0.1.2 (from ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b) Unable to find image 'ocaml/opam:ubuntu-24.04-ocaml-5.4@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b' locally docker.io/ocaml/opam@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b: Pulling from ocaml/opam 689b91d88a0f: Pulling fs layer 4e71de5e5d62: Pulling fs layer ebacb4dcb106: Pulling fs layer e54a581ed4fe: Pulling fs layer 31c8da56d6c5: Pulling fs layer 78c5ccb5f898: Pulling fs layer 05d21c448f84: Pulling fs layer 559aa43d65a4: Pulling fs layer 4e71de5e5d62: Waiting d5185a2eabb5: 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sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b Status: Downloaded newer image for ocaml/opam@sha256:52aa6935df4f331cf0908e036760b43fd20e0b811bc548c57e893089dbb9cc5b 2026-04-25 17:32.48 ---> using "a06438aa566b1a049d3c7f3592a97d1d542968d81a3b125c496e6979e82c3753" from cache /: (comment ubuntu-24.04-5.4_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")) 2026-04-25 17:32.48 ---> using "c2b2360ef99f72899407b49dd086bb8647a07219c731395851adaf9da76ebc22" 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 2026-04-25 17:32.48 ---> using "b5f92c54ac9e0bb36cf513f47b75a50818a7b9cd0b304784316918bc86e321e8" from cache /src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) Linux 6.8.0-107-generic The OCaml toplevel, version 5.4.1 2.5.0 2026-04-25 17:32.48 ---> using "6dcd95a2cd00bae4736d988819170a2206558fe7fede2c0ce0afe161d3bc3ff5" from cache /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-04-25 17:32.48 ---> using "622547fce7a62120860246a1c49c10aaf61fb8918ad64525eab71906d89383a5" 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_HEAD 42844088d7..f83868273d master -> origin/master 5f7bb1a6e6 Merge pull request #29704 from shonfeder/release-dune-3.22.2 <><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><> [default] synchronised from git+file:///home/opam/opam-repository Everything as up-to-date as possible 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) 2026-04-25 17:33.05 ---> saved as "b8e03f12de4f6dee78d1b501dc2279139425d50ea8e88f04522203a320596cf2" /src: (copy (src snappy.opam) (dst ./)) 2026-04-25 17:33.06 ---> saved as "73040848f870085ad9cf8c4a740499430930ae8b1a5176596b625e5c5ca9632c" /src: (run (network host) (shell "opam pin add -yn snappy.dev './'")) [snappy.dev] synchronised (file:///src) snappy is now pinned to file:///src (version dev) 2026-04-25 17:33.09 ---> saved as "bdb32475d847a5b98a78e734bf1533379154690de389cbe2be454a733b340f8e" /src: (run (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-04-25 17:33.09 ---> saved as "c2f6672a331b83555653418e63e9fbf0f08adad6790a33b0b6af93daf8267cc1" /src: (env DEPS "base-bigarray.base base-domains.base base-effects.base base-nnp.base base-threads.base base-unix.base conf-snappy.1 dune.3.22.2 ocaml.5.4.1 ocaml-base-compiler.5.4.1 ocaml-compiler.5.4.1 ocaml-config.3 ocaml-options-vanilla.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 snappy.dev $DEPS")) + /usr/bin/sudo "apt-get" "update" - Get:1 http://security.ubuntu.com/ubuntu noble-security InRelease [126 kB] - Get:2 http://security.ubuntu.com/ubuntu noble-security/universe amd64 Packages [1498 kB] - Get:3 http://security.ubuntu.com/ubuntu noble-security/multiverse amd64 Packages [34.2 kB] - Get:4 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages [1981 kB] - Get:5 http://security.ubuntu.com/ubuntu noble-security/restricted amd64 Packages [3479 kB] - Hit:6 http://archive.ubuntu.com/ubuntu noble InRelease - Get:7 http://archive.ubuntu.com/ubuntu noble-updates InRelease [126 kB] - Get:8 http://archive.ubuntu.com/ubuntu noble-backports InRelease [126 kB] - Get:9 http://archive.ubuntu.com/ubuntu noble-updates/universe amd64 Packages [2141 kB] - Get:10 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages [2354 kB] - Get:11 http://archive.ubuntu.com/ubuntu noble-updates/multiverse amd64 Packages [38.0 kB] - Get:12 http://archive.ubuntu.com/ubuntu noble-updates/restricted amd64 Packages [3658 kB] - Get:13 http://archive.ubuntu.com/ubuntu noble-backports/multiverse amd64 Packages [671 B] - Get:14 http://archive.ubuntu.com/ubuntu noble-backports/main amd64 Packages [49.0 kB] - Get:15 http://archive.ubuntu.com/ubuntu noble-backports/universe amd64 Packages [35.6 kB] - Fetched 15.6 MB in 11s (1391 kB/s) - Reading package lists... - <><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><> [snappy.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). The following system packages will first need to be installed: libsnappy-dev <><> Handling external dependencies <><><><><><><><><><><><><><><><><><><><><><> + /usr/bin/sudo "apt-get" "install" "-qq" "-yy" "libsnappy-dev" - debconf: delaying package configuration, since apt-utils is not installed - Selecting previously unselected package libsnappy1v5:amd64. - (Reading database ... (Reading database ... 5% (Reading database ... 10% (Reading database ... 15% (Reading database ... 20% (Reading database ... 25% (Reading database ... 30% (Reading database ... 35% (Reading database ... 40% (Reading database ... 45% (Reading database ... 50% (Reading database ... 55% (Reading database ... 60% (Reading database ... 65% (Reading database ... 70% (Reading database ... 75% (Reading database ... 80% (Reading database ... 85% (Reading database ... 90% (Reading database ... 95% (Reading database ... 100% (Reading database ... 16365 files and directories currently installed.) - Preparing to unpack .../libsnappy1v5_1.1.10-1build1_amd64.deb ... - Unpacking libsnappy1v5:amd64 (1.1.10-1build1) ... - Selecting previously unselected package libsnappy-dev:amd64. - Preparing to unpack .../libsnappy-dev_1.1.10-1build1_amd64.deb ... - Unpacking libsnappy-dev:amd64 (1.1.10-1build1) ... - Setting up libsnappy1v5:amd64 (1.1.10-1build1) ... - Setting up libsnappy-dev:amd64 (1.1.10-1build1) ... - Processing triggers for libc-bin (2.39-0ubuntu8.7) ... # To update the current shell environment, run: eval $(opam env) 2026-04-25 17:33.57 ---> saved as "a3340777bbe9e5ffa18ee8d9f75fac55de440b47d8554fb670da0461a8b8ab2b" /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 2 packages - install conf-snappy 1 - install dune 3.22.2 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> retrieved conf-snappy.1 (cached) -> installed conf-snappy.1 -> retrieved dune.3.22.2 (cached) -> installed dune.3.22.2 Done. # To update the current shell environment, run: eval $(opam env) 2026-04-25 17:35.03 ---> saved as "e41a3b4ee28f3a619aeb511d62e474c9b633357cbd64903bcafaed66c7da59d5" /src: (copy (src .) (dst /src)) 2026-04-25 17:35.03 ---> saved as "c542d8a47346b4e512e088b93d9dba8815305f219e4e50e64b6e2c84df2420b6" /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..62-40 -strict-sequence -strict-formats -short-paths -keep-locs -g -bin-annot -bin-annot-occurrences -I .test.eobjs/byte -I src/.snappy.objs/byte -no-alias-deps -opaque -o .test.eobjs/byte/test.cmo -c -impl test.ml) File "test.ml", line 7, characters 6-79: 7 | for i = 0 to pred n do Buffer.add_char b (Char.chr (Random.int 256)) done; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Error (warning 35 [unused-for-index]): unused for-loop index i. File "test.ml", line 18, characters 2-60: 18 | for n = 0 to 1024 do check (Random.int 16384 + 16384) done; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Error (warning 35 [unused-for-index]): unused for-loop index n. "/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1 2026-04-25 17:35.04: Job failed: Failed: Build failed