Building on phoebe.caelum.ci.dev (from ocaml/opam:debian-unstable@sha256:9018ce829df92c35f88e7c207d161758bf85fa58146b7fb83c1e7bdd52796af2) 2023-09-12 18:20.29 ---> using "a6d895057d33423d936537196324b0ae6b29c3c416a86d619af7ffab6d54780a" 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-dev /usr/bin/opam")) 2023-09-12 18:20.29 ---> using "c8ff46adfeac738d7617a8f1519af408882364b6f9b4b67c465a381ce2c0d02a" 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 8ee6bf822f4e1daaa08726e322bf03c9f0251bdb")) 2023-09-12 18:20.29 ---> using "a4d4bc62f6d9af635a1084ae9978d6b8b32d332991de6dfe6d56687d10fefcaf" 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. 2023-09-12 18:20.29 ---> using "afadee60f5277fb2c9ccf0ae7c1548965f28cbdb61ebd53e732d06c8444ddd34" from cache /: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "opam switch create --repositories=default '4.11' '4.11.2'")) <><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><> Switch invariant: ["ocaml-base-compiler" {= "4.11.2"} | "ocaml-system" {= "4.11.2"}] <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> installed base-bigarray.base -> installed base-threads.base -> installed base-unix.base -> retrieved ocaml-base-compiler.4.11.2 (cached) -> installed ocaml-base-compiler.4.11.2 -> installed ocaml-config.1 -> installed ocaml.4.11.2 Done. # Run eval $(opam env --switch=4.11) to update the current shell environment 2023-09-12 18:20.29 ---> using "a21392828889e7f34ead174aad5b9b0394a79a8e74fdfb400e439ca79c74cd8a" from cache /: (run (network host) (shell "opam update --depexts")) + /usr/bin/sudo "apt-get" "update" - Get:1 http://deb.debian.org/debian unstable InRelease [195 kB] - Get:2 http://deb.debian.org/debian unstable/main amd64 Packages.diff/Index [63.6 kB] - Get:3 http://deb.debian.org/debian unstable/main amd64 Packages T-2023-09-12-1406.07-F-2023-09-07-0809.21.pdiff [298 kB] - Get:3 http://deb.debian.org/debian unstable/main amd64 Packages T-2023-09-12-1406.07-F-2023-09-07-0809.21.pdiff [298 kB] - Fetched 557 kB in 3s (220 kB/s) - Reading package lists... - 2023-09-12 18:20.29 ---> using "2f85679e1a05a06a07fc5bc189f0da041959feb6b46a323900dc7ac2c7d2d954" from cache /: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "\ \nopam remove -y \"abstract_algebra.v0.16.0\"\ \nopam install -vy \"abstract_algebra.v0.16.0\"\ \nres=$?\ \nif [ $res = 31 ]; then\ \n if opam show -f x-ci-accept-failures: \"abstract_algebra.v0.16.0\" | 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 $res\ \n")) Nothing to do. [NOTE] abstract_algebra.v0.16.0 is not installed. [ERROR] Package conflict! No solution found, exiting * No agreement on the version of ocaml: - (invariant) -> ocaml-base-compiler = 4.11.2 -> ocaml = 4.11.2 - abstract_algebra >= v0.16.0 -> ocaml >= 4.14.0 You can temporarily relax the switch invariant with `--update-invariant' 'opam install -vy abstract_algebra.v0.16.0' failed. "/usr/bin/env" "bash" "-c" " opam remove -y "abstract_algebra.v0.16.0" opam install -vy "abstract_algebra.v0.16.0" res=$? if [ $res = 31 ]; then if opam show -f x-ci-accept-failures: "abstract_algebra.v0.16.0" | 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