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Building on x86-bm-10.ocamllabs.io

(from ocaml/opam:debian-unstable)
WARNING: Error loading config file: .dockercfg: $HOME is not defined
Unable to find image 'ocaml/opam:debian-unstable' locally
debian-unstable: Pulling from ocaml/opam
Digest: sha256:a32e554d37007cabaf12da2261dad1c6890fb793357d4499f39865f3c85d81ab
Status: Downloaded newer image for ocaml/opam:debian-unstable
2022-01-02 04:34.46 ---> 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"))
2022-01-02 04:34.46 ---> 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 8ac7f1657038ae1b7a02e64d87aeb06912f4ca1c"))
2022-01-02 04:34.46 ---> using "0100302b458cd7f99084008cbb3689a3574b8bf20b782f0ddf1ff5969c6c5ace" 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.

2022-01-02 04:34.46 ---> using "96784e14b90597d9836bbfbd5d72400d6a30be51d8291df44ab311fc06b34787" 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
2022-01-02 04:34.46 ---> using "d80afd0702e2036493d1f5f9d929565b35174bd881be2b8e10cd453c818de3ea" 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 [8857 kB]
- Fetched 9086 kB in 2s (5164 kB/s)
- Reading package lists...
- 
2022-01-02 04:34.46 ---> using "fffa3c59fe68f4c2b6fd2e7d461d9c4c9c7c963701ad91396aa7c4ebfa503782" from cache

/: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
        (network host)
        (shell  "\
               \nopam remove -y \"apero-core.0.4.7\"\
               \nopam install -vy \"apero-core.0.4.7\"\
               \nres=$?\
               \nif [ $res = 31 ]; then\
               \n    if opam show -f x-ci-accept-failures: \"apero-core.0.4.7\" | 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] apero-core.0.4.7 is not installed.

Nothing to do.
[ERROR] Package conflict!
  * No agreement on the version of ocaml:
    - (invariant) -> ocaml-base-compiler = 4.11.2 -> ocaml = 4.11.2
    - apero-core -> ppx_deriving = 4.4 -> ocaml < 4.10.0
    You can temporarily relax the switch invariant with `--update-invariant'

No solution found, exiting
'opam install -vy apero-core.0.4.7' failed.
"/bin/bash" "-c"
"
opam remove -y "apero-core.0.4.7"
opam install -vy "apero-core.0.4.7"
res=$?
if [ $res = 31 ]; then
    if opam show -f x-ci-accept-failures: "apero-core.0.4.7" | 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