Building on x86-bm-5.ocamllabs.io (from ocaml/opam:debian-unstable) Unable to find image 'ocaml/opam:debian-unstable' locally debian-unstable: Pulling from ocaml/opam a6543f35db5e: Already exists cc2950235715: Pulling fs layer 5fb07599fbb1: Pulling fs layer 5fb07599fbb1: Verifying Checksum 5fb07599fbb1: Download complete cc2950235715: Verifying Checksum cc2950235715: Download complete cc2950235715: Pull complete 5fb07599fbb1: Pull complete Digest: sha256:dfed7bff1a381ffff2cd28380e5300e2918ceefeafb3be42fb70e650cb5a5ae8 Status: Downloaded newer image for ocaml/opam:debian-unstable 2021-12-03 17:46.34 ---> using "0acd5aeaa8f7bc314514d9795d14a7f12ec72a6a5b11c5904350189734c6859b" from cache /: (user (uid 1000) (gid 1000)) /: (env OPAMPRECISETRACKING 1) /: (env OPAMUTF8 never) /: (env OPAMEXTERNALSOLVER builtin-0install) /: (env OPAMCRITERIA +removed) /: (run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam")) 2021-12-03 17:46.34 ---> using "4d29eb3e0b7cd69a97ed90837671d5ca38aa41e2fb94346298af500378eca6fa" from cache /: (run (network host) (shell "rm -rf ~/opam-repository && git clone -q 'https://github.com/ocaml/opam-repository' ~/opam-repository && git -C ~/opam-repository checkout -q b1ed080260d9fb3332ffd1ed74a70b40f8d46d66")) 2021-12-03 17:46.34 ---> using "470a5139cd314c308ef6f8a7115ce3eecbef27ce3b36ad57c590d49c448a8f62" from cache /: (run (shell "rm -rf ~/.opam && opam init -ya --bare --config ~/.opamrc-sandbox ~/opam-repository")) Configuring from /home/opam/.opamrc-sandbox, then /home/opam/.opamrc, and finally 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. <><> Fetching repository information ><><><><><><><><><><><><><><><><><><><><><> [default] Initialised User configuration: ~/.profile is already up-to-date. [NOTE] Make sure that ~/.profile is well sourced in your ~/.bashrc. 2021-12-03 17:46.34 ---> using "6ff696b0fce120bd80d73dc055775d9b6cd971171da508a2aeef8fc7d75ea210" from cache /: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "opam switch create --repositories=default '4.12' '4.12.1'")) <><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><> Switch invariant: ["ocaml-base-compiler" {= "4.12.1"} | "ocaml-system" {= "4.12.1"}] <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> installed base-bigarray.base -> installed base-threads.base -> installed base-unix.base -> installed ocaml-options-vanilla.1 -> retrieved ocaml-base-compiler.4.12.1 (cached) -> installed ocaml-base-compiler.4.12.1 -> installed ocaml-config.2 -> installed ocaml.4.12.1 Done. # Run eval $(opam env --switch=4.12) to update the current shell environment 2021-12-03 17:46.34 ---> using "ca7b6caf7a46ddb28076c5a6f691f2d0763957be051563a9718de14fdb1c5ef8" from cache /: (run (network host) (shell "opam update --depexts")) + /usr/bin/sudo "apt-get" "update" - Get:1 http://deb.debian.org/debian unstable InRelease [165 kB] - Get:2 http://deb.debian.org/debian unstable/main amd64 Packages.diff/Index [63.6 kB] - Get:3 http://deb.debian.org/debian unstable/main amd64 Packages T-2021-12-03-0207.34-F-2021-11-23-2001.32.pdiff [559 kB] - Get:3 http://deb.debian.org/debian unstable/main amd64 Packages T-2021-12-03-0207.34-F-2021-11-23-2001.32.pdiff [559 kB] - Fetched 787 kB in 2s (446 kB/s) - Reading package lists... - 2021-12-03 17:46.34 ---> using "ad5cb488dd2cd44108a641e9f4b1b432ff2c0ea292d3a55069379dafdf4023b1" from cache /: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "\ \nopam remove -y \"ppx_core.v0.11.0\"\ \nopam install -vy \"ppx_core.v0.11.0\"\ \nres=$?\ \nif [ $res = 31 ]; then\ \n if opam show -f x-ci-accept-failures: \"ppx_core.v0.11.0\" | grep -q '\"debian-unstable\"'; then\ \n echo \"This package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\"\ \n exit 69\ \n fi\ \nfi\ \n\ \n\ \nexit $res\ \n")) [NOTE] ppx_core.v0.11.0 is not installed. Nothing to do. [ERROR] Package conflict! * No agreement on the version of ocaml: - (invariant) -> ocaml-base-compiler = 4.12.1 -> ocaml = 4.12.1 - ppx_core >= v0.11.0 -> ppxlib < 0.3.0 -> ocaml < 4.08.0 You can temporarily relax the switch invariant with `--update-invariant' No solution found, exiting 'opam install -vy ppx_core.v0.11.0' failed. "/bin/bash" "-c" " opam remove -y "ppx_core.v0.11.0" opam install -vy "ppx_core.v0.11.0" res=$? if [ $res = 31 ]; then if opam show -f x-ci-accept-failures: "ppx_core.v0.11.0" | grep -q '"debian-unstable"'; then echo "This package failed and has been disabled for CI using the 'x-ci-accept-failures' field." exit 69 fi fi exit $res " failed with exit status 20 Failed: Build failed