Building on clete.ocamllabs.io (from ocaml/opam:debian-unstable@sha256:7054d8a46152338971700614b854690c8ce1a3d6024d9e66b018a8e73119aa3f) 2022-03-03 08:06.46 ---> using "373f9b631d075c18f7442f5ab0fc65a1fd416e45c4bad373f7db673d6cf80f59" 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")) 2022-03-03 08:06.46 ---> using "88849b7b49c5c9e5ea88c51a2386f85dc9692b3cbbbdfa071a4b6fb51a141dbe" 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 892f7bcbcb6c1fd05911ac75d53aa8c9f717b4b0")) 2022-03-03 08:06.46 ---> using "404c235885055cd745b552882486f8b810a0b774621d6103597df8eba1715fda" 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. 2022-03-03 08:06.46 ---> using "0af54149d5e87a921b7dadf447f75ea502ca8353b2aa045688bdf344893d2879" from cache /: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "opam switch create --repositories=default '4.06' '4.06.1'")) <><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><> Switch invariant: ["ocaml-base-compiler" {= "4.06.1"} | "ocaml-system" {= "4.06.1"}] <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> installed base-bigarray.base -> installed base-threads.base -> installed base-unix.base -> retrieved ocaml-base-compiler.4.06.1 (cached) -> installed ocaml-base-compiler.4.06.1 -> installed ocaml-config.1 -> installed ocaml.4.06.1 Done. # Run eval $(opam env --switch=4.06) to update the current shell environment 2022-03-03 08:06.46 ---> using "ce101d394f9117acf2a98c5ba4cae0f0a6e2b64d8477e737b0eb4ab8070a9f1d" 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] - Ign:2 http://deb.debian.org/debian unstable/main amd64 Packages.diff/Index - Get:3 http://deb.debian.org/debian unstable/main amd64 Packages [9023 kB] - Fetched 9252 kB in 2s (5156 kB/s) - Reading package lists... - 2022-03-03 08:06.46 ---> using "44576e83dd464c7a27a33a221fcceeb32fe98ae6a18b7daf1ca5ee0e9e616584" from cache /: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "opam install -y ocaml-secondary-compiler")) The following actions will be performed: - install ocaml-secondary-compiler 4.08.1-1 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><> -> retrieved ocaml-secondary-compiler.4.08.1-1 (cached) -> installed ocaml-secondary-compiler.4.08.1-1 Done. # Run eval $(opam env) to update the current shell environment 2022-03-03 08:06.46 ---> using "5369905339123176d36d6a414e72925bd9d7b38172a99aee41740239921f1bb6" from cache /: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "\ \nopam remove -y \"async_websocket.v0.14.0\"\ \nopam install -vy \"async_websocket.v0.14.0\"\ \nres=$?\ \nif [ $res = 31 ]; then\ \n if opam show -f x-ci-accept-failures: \"async_websocket.v0.14.0\" | 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 $res\ \n")) Nothing to do. [NOTE] async_websocket.v0.14.0 is not installed. [ERROR] Package conflict! * No agreement on the version of ocaml: - (invariant) -> ocaml-base-compiler = 4.06.1 -> ocaml = 4.06.1 - async_websocket >= v0.14.0 -> ocaml >= 4.07.0 You can temporarily relax the switch invariant with `--update-invariant' No solution found, exiting 'opam install -vy async_websocket.v0.14.0' failed. "/bin/bash" "-c" " opam remove -y "async_websocket.v0.14.0" opam install -vy "async_websocket.v0.14.0" res=$? if [ $res = 31 ]; then if opam show -f x-ci-accept-failures: "async_websocket.v0.14.0" | 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