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Building on c2-2.ocamllabs.io

(from ocaml/opam:debian-unstable@sha256:ca0a0544477c6a9a763f100587b518646c93ce73d78874d823b27e8f935bb951)
Unable to find image 'ocaml/opam:debian-unstable@sha256:ca0a0544477c6a9a763f100587b518646c93ce73d78874d823b27e8f935bb951' locally
docker.io/ocaml/opam@sha256:ca0a0544477c6a9a763f100587b518646c93ce73d78874d823b27e8f935bb951: Pulling from ocaml/opam
4ab10c654db5: Pulling fs layer
4ab10c654db5: Verifying Checksum
4ab10c654db5: Download complete
4ab10c654db5: Pull complete
Digest: sha256:ca0a0544477c6a9a763f100587b518646c93ce73d78874d823b27e8f935bb951
Status: Downloaded newer image for ocaml/opam@sha256:ca0a0544477c6a9a763f100587b518646c93ce73d78874d823b27e8f935bb951
2023-01-16 12:34.42 ---> using "94874f478e26ede84037b9b3ffc4aac7c83b2542bbac8788a2cc7da937a47054" 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"))
2023-01-16 12:34.42 ---> using "e2ed8ca10c7e97a3eeacb1721604176c2efe0af3ca6e435d47ef0dd2f6bd15ce" 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 e0171a799fbb4458db77a10f76a6279727aac521"))
2023-01-16 12:34.42 ---> using "3864620b78a5bfd4a34825831d954f85d91d614ee4f51a2a653199fcbdb63f63" 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.

2023-01-16 12:34.42 ---> using "4e975791caadc63ea7aadc58806396bb379155c55894dc8ed37de19ce13ba00b" from cache

/: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
        (network host)
        (shell "opam switch create --repositories=default '4.05' '4.05.0'"))

<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
Switch invariant: ["ocaml-base-compiler" {= "4.05.0"} | "ocaml-system" {= "4.05.0"}]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> installed base-bigarray.base
-> installed base-threads.base
-> installed base-unix.base
-> retrieved ocaml-base-compiler.4.05.0  (https://github.com/ocaml/ocaml/archive/4.05.0.tar.gz)
-> installed ocaml-base-compiler.4.05.0
-> installed ocaml-config.1
-> installed ocaml.4.05.0
Done.
# Run eval $(opam env --switch=4.05) to update the current shell environment
2023-01-16 12:34.42 ---> using "7425eac5cdf9849dc81d917a2c6e9a2e1505499027a5f389fa56ae733700fe95" 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-2023-01-14-0804.37-F-2023-01-13-2043.11.pdiff [63.8 kB]
- Get:3 http://deb.debian.org/debian unstable/main amd64 Packages T-2023-01-14-0804.37-F-2023-01-13-2043.11.pdiff [63.8 kB]
- Fetched 289 kB in 3s (85.7 kB/s)
- Reading package lists...
- 
2023-01-16 12:34.42 ---> using "f35e0932b5021a35d8e082432a67dad18d5bf82c0d237bd1096a8dba3bc9e593" 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 1 package
  - 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
2023-01-16 12:34.42 ---> using "5924cc5c2c3a7c6c27b17bac59f5209dfcd3efcb4d0fd54c8b1516bba5893bcc" from cache

/: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
        (network host)
        (shell  "\
               \nopam remove -y \"alonzo.0.4.0\"\
               \nopam install -vy \"alonzo.0.4.0\"\
               \nres=$?\
               \nif [ $res = 31 ]; then\
               \n    if opam show -f x-ci-accept-failures: \"alonzo.0.4.0\" | 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"))
[NOTE] alonzo.0.4.0 is not installed.

Nothing to do.
[ERROR] Package conflict!
  * No agreement on the version of ocaml-base-compiler:
    - (invariant) -> ocaml-base-compiler = 4.05.0
    - alonzo -> ocaml >= 4.14.0 -> ocaml-base-compiler >= 4.14.0~
    You can temporarily relax the switch invariant with `--update-invariant'
  * Missing dependency:
    - alonzo -> ocaml >= 4.14.0 -> ocaml-variants < 5.0.2~ -> ocaml-beta
    unmet availability conditions: 'enable-ocaml-beta-repository'

No solution found, exiting
'opam install -vy alonzo.0.4.0' failed.
"/bin/bash" "-c"
"
opam remove -y "alonzo.0.4.0"
opam install -vy "alonzo.0.4.0"
res=$?
if [ $res = 31 ]; then
    if opam show -f x-ci-accept-failures: "alonzo.0.4.0" | 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