2026-04-13 10:13.43: New job: test ygrek/ocaml-snappy https://github.com/ygrek/ocaml-snappy.git#refs/heads/master (329a58d03ad5b3d6fa131cafbb8de0eb83d22a81) (linux-x86_64:debian-13-4.08_opam-2.5) Base: ocaml/opam:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c 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:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c # debian-13-4.08_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 d06cfb1853afceb1dc127f88edaac3f8110bf6cc || git fetch origin master) && git reset -q --hard d06cfb1853afceb1dc127f88edaac3f8110bf6cc && 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-threads.base base-unix.base conf-snappy.1 dune.3.22.1 ocaml.4.08.1 ocaml-base-compiler.4.08.1 ocaml-config.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 2026-04-13 10:13.43: Using cache hint "ygrek/ocaml-snappy-ocaml/opam:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c-debian-13-4.08_opam-2.5-16f3088f0ec60d888826c573cdb1989d" 2026-04-13 10:13.43: Using OBuilder spec: ((from ocaml/opam:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c) (comment debian-13-4.08_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 d06cfb1853afceb1dc127f88edaac3f8110bf6cc || git fetch origin master) && git reset -q --hard d06cfb1853afceb1dc127f88edaac3f8110bf6cc && 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-threads.base base-unix.base conf-snappy.1 dune.3.22.1 ocaml.4.08.1 ocaml-base-compiler.4.08.1 ocaml-config.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")) ) 2026-04-13 10:13.43: Waiting for resource in pool OCluster 2026-04-13 10:14.01: Waiting for worker… 2026-04-13 10:14.03: Got resource from pool OCluster Building on asteria.caelum.ci.dev 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> Initialized empty Git repository in /var/cache/obuilder/ocluster/git/ocaml-snappy.git-aa278a0c62dca1447db591838af078915226c67b/.git/ HEAD is now at 329a58d release 0.1.2 (from ocaml/opam:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c) Unable to find image 'ocaml/opam:debian-13-ocaml-4.08@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c' locally docker.io/ocaml/opam@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c: Pulling from ocaml/opam a7730063fcfe: Already exists 1a27fd2181de: Already exists c29591c91388: Already exists 356a64daa753: Already exists ac02f8f2062b: Already exists aaa2f390e4c8: Already exists b668811757f6: Already exists 32fd4e1a774f: Already exists b1d486fb8fdf: Already exists cf8a2024f299: Already exists 8c4a5dac67c3: Already exists 6adfe24d7b40: Already exists dccd6e3c0589: Already exists 2ee4bcb55cd4: Already exists 2dc3b58478d7: Already exists daf15e5c44c6: Already exists 564e978a8088: Already exists 564e978a8088: Already exists 25a652a8c456: Already exists b3bfea7bff3f: Already exists a00f2937f570: Already exists 78bd1737ebff: Already exists 4f4fb700ef54: Already exists 4291a055edd7: Already exists 3c2b2836d59a: Already exists 7b3e96544a52: Already exists c72503effb14: Already exists bca08df11a10: Already exists 2ab0829b2daf: Already exists 1d246d4da211: Already exists a09cb4870027: Already exists 2ce07b4fe7c0: Already exists 6b96f28d505e: Already exists b6ad36bba9bf: Already exists 56d62791a0f9: Already exists 4d60780055d1: Already exists 43f57a7c44cb: Already exists f21057dc4e85: Already exists e0d2ca1300ed: Already exists 9da2f7598f8e: Already exists cb569bb28593: Already exists b32c9abef0bb: Pulling fs layer dd7da3e42740: Pulling fs layer 06223904e4d3: Pulling fs layer b18a38618cf8: Pulling fs layer b18a38618cf8: Waiting dd7da3e42740: Verifying Checksum dd7da3e42740: Download complete b18a38618cf8: Download complete 06223904e4d3: Verifying Checksum 06223904e4d3: Download complete b32c9abef0bb: Verifying Checksum b32c9abef0bb: Download complete b32c9abef0bb: Pull complete dd7da3e42740: Pull complete 06223904e4d3: Pull complete b18a38618cf8: Pull complete Digest: sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c Status: Downloaded newer image for ocaml/opam@sha256:3cbf0e68d3a718b80b9a2ab282b68bb62badcbc072fa014a5564516c5f70e74c 2026-04-13 10:15.02 ---> saved as "228e5ba11f0bea08c69266bb98d12a75785691261b07b0808652a307a04e14b2" /: (comment debian-13-4.08_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")) 2026-04-13 10:15.02 ---> saved as "8f0c0f8b904420153cc7d08b1a8906e69995fa51995d7a62aa1c073c7191c917" /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 [NOTE] The 'jobs' option was reset, its value was 71 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=71 --global Format upgrade done. <><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><> [default] Initialised 2026-04-13 10:15.24 ---> saved as "69a4145a27f132504ea642fc2251248a9d038744f1d63d739fb1292f7f0099ce" /src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version")) Linux 6.8.0-107-generic The OCaml toplevel, version 4.08.1 2.5.0 2026-04-13 10:15.25 ---> saved as "5cac6514a27f9520520e43db3fcfdac4b7207f9a8134f988f146ecf9da38efcb" /src: (workdir /src) /src: (run (shell "sudo chown opam /src")) 2026-04-13 10:15.25 ---> saved as "b57b6278781af1681d1782728fb84867fcbbe8008d7c20a94689745acc908c11" /src: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "cd ~/opam-repository && (git cat-file -e d06cfb1853afceb1dc127f88edaac3f8110bf6cc || git fetch origin master) && git reset -q --hard d06cfb1853afceb1dc127f88edaac3f8110bf6cc && git log --no-decorate -n1 --oneline && opam update -u")) d06cfb1853 Merge pull request #29632 from shonfeder/release-dune-3.22.1 <><> 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.5.5.0"), which will ask permission to downgrade or uninstall the conflicting packages. Nothing to do. # To update the current shell environment, run: eval $(opam env) 2026-04-13 10:15.38 ---> saved as "6f6359431202bc2e39cd769f99b87c757a98c3945a687c541facf0c374180d24" /src: (copy (src snappy.opam) (dst ./)) 2026-04-13 10:15.39 ---> saved as "f9a6e1caf3d8c9a5a2cc6131fe4de41e0083cfefe4c50d525aed2e4c99be89fa" /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) 2026-04-13 10:15.41 ---> saved as "7ffaa74df78167818bfc1762652279fceb5d1ed4f926d88a2b1bd56e0185381d" /src: (run (shell "echo '(lang dune 3.0)' > './dune-project'")) 2026-04-13 10:15.42 ---> saved as "601b5d78a585c58b6a4b0d0d4c62bea4a0c94d02079d1cf67057d849c1952f08" /src: (env DEPS "base-bigarray.base base-threads.base base-unix.base conf-snappy.1 dune.3.22.1 ocaml.4.08.1 ocaml-base-compiler.4.08.1 ocaml-config.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" - Hit:1 http://deb.debian.org/debian trixie InRelease - 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-security trixie-security/main amd64 Packages [122 kB] - Fetched 213 kB in 0s (1765 kB/s) - Reading package lists... <><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><> [snappy.dev] synchronised (file:///src) [NOTE] Package ocaml-config is already installed (current version is 1). [NOTE] Package ocaml-base-compiler is already installed (current version is 4.08.1). [NOTE] Package ocaml is already installed (current version is 4.08.1). [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-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" - 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 ... 20623 files and directories currently installed.) - Preparing to unpack .../libsnappy1v5_1.2.2-1_amd64.deb ... - Unpacking libsnappy1v5:amd64 (1.2.2-1) ... - Selecting previously unselected package libsnappy-dev:amd64. - Preparing to unpack .../libsnappy-dev_1.2.2-1_amd64.deb ... - Unpacking libsnappy-dev:amd64 (1.2.2-1) ... - Setting up libsnappy1v5:amd64 (1.2.2-1) ... - Setting up libsnappy-dev:amd64 (1.2.2-1) ... - Processing triggers for libc-bin (2.41-12+deb13u2) ... # To update the current shell environment, run: eval $(opam env) 2026-04-13 10:15.54 ---> saved as "23974f6512c97eb39336dadbfe2b7818c7b7717f050f0f7cf0c8befbcac6b1f0" /src: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "opam install $DEPS")) [NOTE] Package ocaml-config is already installed (current version is 1). [NOTE] Package ocaml-base-compiler is already installed (current version is 4.08.1). [NOTE] Package ocaml is already installed (current version is 4.08.1). [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-bigarray is already installed (current version is base). The following actions will be performed: === install 2 packages - install conf-snappy 1 - install dune 3.22.1 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> retrieved conf-snappy.1 (cached) -> installed conf-snappy.1 -> retrieved dune.3.22.1 (cached) -> installed dune.3.22.1 Done. # To update the current shell environment, run: eval $(opam env) 2026-04-13 10:16.45 ---> saved as "ace3ea33fff49e423100503a842487b8673d8eb0f557616f5fa4aa4474c8d222" /src: (copy (src .) (dst /src)) 2026-04-13 10:16.45 ---> saved as "c8db00a25d0a334d317085f29a97684c839807f04400ed77bcba4b71a18c3c48" /src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build")) (cd _build/default && /home/opam/.opam/4.08/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 -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-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-loop index n. "/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 1 2026-04-13 10:16.54: Job failed: Failed: Build failed