Building on x86-bm-11.ocamllabs.io (from ocaml/opam:debian-unstable) 2021-11-09 21:46.24 ---> 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")) 2021-11-09 21:46.24 ---> using "4d29eb3e0b7cd69a97ed90837671d5ca38aa41e2fb94346298af500378eca6fa" from cache /: (run (network host) (shell "rm -rf ~/opam-repository && git clone -q 'git://github.com/ocaml/opam-repository.git' ~/opam-repository && git -C ~/opam-repository checkout -q 7b361ce572d98a700d2e0018cb6e9c72db9a3675")) 2021-11-09 21:46.24 ---> using "d735cc1084771dd7a4c27bc038a74be9c565f9b4862c23ef3b35f68ab04a6aef" 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. 2021-11-09 21:46.24 ---> using "44eb507bce7a2e2ed046a7a65eaf9728147d93dd5621a9ab5b08e6a2b062590d" from cache /: (run (network host) (shell "git clone -q 'git://github.com/ocaml/ocaml-beta-repository.git' ~/'beta' && git -C ~/'beta' checkout -q 79aeeadd813bdae424ab53f882f08bee0a4e0b89")) 2021-11-09 21:46.24 ---> using "982f7d54b73fc7cab2a09dec2ae08ff2574343a9745a7f336abd76f9a26d22dc" from cache /: (run (shell "opam repository add --dont-select 'beta' ~/'beta'")) [beta] Initialised 2021-11-09 21:46.24 ---> using "581fbaf65c6cbed22afcc69cdb3cb3a52aafc46e8c4cea4bc9ca5a44060fda80" from cache /: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "opam switch create --repositories=beta,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 $(opam env --switch=4.12) to update the current shell environment 2021-11-09 21:46.24 ---> using "78d5078c0bdd824acd7c8517ca45814078f228f65eb155cdc753f924c17cc952" from cache /: (run (network host) (shell "opam update --depexts")) + /usr/bin/sudo "apt-get" "update" - Get:1 http://deb.debian.org/debian unstable InRelease [165 kB] - Get:2 http://deb.debian.org/debian unstable/main amd64 Packages.diff/Index [63.6 kB] - Ign:2 http://deb.debian.org/debian unstable/main amd64 Packages.diff/Index - Get:3 http://deb.debian.org/debian unstable/main amd64 Packages [8823 kB] - Fetched 9052 kB in 2s (4530 kB/s) - Reading package lists... - 2021-11-09 21:46.24 ---> using "6018e4a4ef0cbdcce319671880ad2e4975281d34287180d093e49877a1b7bd23" from cache /: (run (cache (opam-archives (target /home/opam/.opam/download-cache))) (network host) (shell "\ \nopam remove -y \"base-ocamlbuild.base\"\ \nopam install -vy \"base-ocamlbuild.base\"\ \nres=$?\ \nif [ $res = 31 ]; then\ \n if opam show -f x-ci-accept-failures: \"base-ocamlbuild.base\" | 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 $res\ \n")) Nothing to do. [NOTE] base-ocamlbuild.base is not installed. [ERROR] Package conflict! * No agreement on the version of ocaml: - (invariant) -> ocaml-base-compiler = 4.12.1 -> ocaml = 4.12.1 - base-ocamlbuild -> ocaml < 4.03 You can temporarily relax the switch invariant with `--update-invariant' No solution found, exiting 'opam install -vy base-ocamlbuild.base' failed. "/bin/bash" "-c" " opam remove -y "base-ocamlbuild.base" opam install -vy "base-ocamlbuild.base" res=$? if [ $res = 31 ]; then if opam show -f x-ci-accept-failures: "base-ocamlbuild.base" | 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