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Building on c2-1.ocamllabs.io

(from ocaml/opam:debian-unstable@sha256:e4c09aeba9b8a867e774ff46ed44d53e775234522abf2babbff843b8f1dedb10)
2022-12-01 16:11.29 ---> using "d3dee1d616ca63d5699d5fd962109ec0d24e968377e0ae69e6161eba0f5af82c" 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"))
2022-12-01 16:11.29 ---> using "48f1f5dc3ecf939352db5ef5caf9f3dc06faae2a01cbd7119d2a81d4fcd9c299" 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 06dca815ecdb3b6fd6bee20130421fa5176fb13b"))
2022-12-01 16:11.29 ---> using "16f67628ac3eeec9d808b099f47f4099b97a8cae63b5c0fbc89d12f2a02927dc" 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.

2022-12-01 16:11.29 ---> using "6fb88fda4d19acd47c8b26cd10aa2012c01f6dcb7de78f06ee3dd49b923bec9b" from cache

/: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
        (network host)
        (shell "opam switch create --repositories=default '4.09' '4.09.1'"))

<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
Switch invariant: ["ocaml-base-compiler" {= "4.09.1"} | "ocaml-system" {= "4.09.1"}]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> installed base-bigarray.base
-> installed base-threads.base
-> installed base-unix.base
-> retrieved ocaml-base-compiler.4.09.1  (https://github.com/ocaml/ocaml/archive/4.09.1.tar.gz)
-> installed ocaml-base-compiler.4.09.1
-> installed ocaml-config.1
-> installed ocaml.4.09.1
Done.
# Run eval $(opam env --switch=4.09) to update the current shell environment
2022-12-01 16:11.29 ---> using "db48828e3ac9aa295aa8011fcc41496c1b4796ee15a513ece57f1ab901dd280f" from cache

/: (run (network host)
        (shell "opam update --depexts"))
+ /usr/bin/sudo "apt-get" "update"
- Get:1 http://deb.debian.org/debian unstable InRelease [161 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-2022-12-01-0803.19-F-2022-11-26-0806.52.pdiff [346 kB]
- Get:3 http://deb.debian.org/debian unstable/main amd64 Packages T-2022-12-01-0803.19-F-2022-11-26-0806.52.pdiff [346 kB]
- Fetched 570 kB in 2s (342 kB/s)
- Reading package lists...
- 
2022-12-01 16:11.29 ---> using "845cba64fde288801af65b31ef2eeb92add8b23484ac8dc21fdae6b1cea9ffc6" from cache

/: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
        (network host)
        (shell  "\
               \nopam remove -y \"avroc.0.0.1\"\
               \nopam install -vy \"avroc.0.0.1\"\
               \nres=$?\
               \nif [ $res = 31 ]; then\
               \n    if opam show -f x-ci-accept-failures: \"avroc.0.0.1\" | 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] avroc.0.0.1 is not installed.

[ERROR] Package conflict!
  * No agreement on the version of ocaml:
    - (invariant) -> ocaml-base-compiler = 4.09.1 -> ocaml = 4.09.1
    - avroc -> ocaml < 4.03.0
    You can temporarily relax the switch invariant with `--update-invariant'
  * No agreement on the version of ocaml-base-compiler:
    - (invariant) -> ocaml-base-compiler = 4.09.1
    - avroc -> ocaml < 4.03.0 -> ocaml-base-compiler = 3.08.3
  * Missing dependency:
    - avroc -> ocaml < 4.03.0 -> ocaml-variants -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'

No solution found, exiting
'opam install -vy avroc.0.0.1' failed.
"/bin/bash" "-c"
"
opam remove -y "avroc.0.0.1"
opam install -vy "avroc.0.0.1"
res=$?
if [ $res = 31 ]; then
    if opam show -f x-ci-accept-failures: "avroc.0.0.1" | 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