2025-04-15 11:58.13: New job: Build using linux-x86_64 in
                                [https://github.com/mirage/mirage-skeleton.git#refs/heads/dev (924fa1b6e311f53d719a3dab1546ea9b43145398)]

OBuilder spec:

((from ocaml/opam:debian-10-ocaml-4.14)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo chown opam:opam /home/opam"))
 (run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam && opam update"))
 (run (network host)
      (shell "opam repo add opam https://github.com/ocaml/opam-repository.git#7ac1b4e19a10b76522563b1a8ff9803429eb32ba"))
 (run (network host)
      (shell "opam repo add mirage-dev https://github.com/mirage/mirage-dev.git#eb114ccf0dd4eeca6b4f06c5c7361c238eeca4fd"))
 (run (network host)
      (shell "opam pin -ny https://github.com/mirage/mirage.git#0044f83feb732e3f861fd948239383b8da402f8a"))
 (run (cache (download-cache (target /home/opam/.opam/download-cache)))
      (network host)
      (shell "sudo apt-get update && opam install -y \"mirage>=4\""))
 (copy (src .) (dst /src/))
 (env MODE unix)
 (workdir /src/)
 (run (shell "opam exec -- make configure"))
 (env MIRAGE_EXTRA_REPOS opam-overlays:https://github.com/dune-universe/opam-overlays.git#395cbc4acc1f4524853728c5885f32f1cfff281b,mirage-opam-overlays:https://github.com/dune-universe/mirage-opam-overlays.git#797cb363df3ff763c43c8fbec5cd44de2878757e)
 (run (network host)
      (shell "opam exec -- make lock"))
 (run (cache (download-cache (target /home/opam/.opam/download-cache)))
      (network host)
      (shell "sudo apt-get update && opam exec -- make depends"))
 (run (shell "opam monorepo list -l mirage.opam.locked"))
 (run (cache (download-cache (target /home/opam/.opam/download-cache)))
      (network host)
      (shell "opam exec -- make pull"))
 (env DUNE_CACHE enabled)
 (env DUNE_CACHE_TRANSPORT direct)
 (run (cache (dune-build-cache (target /home/opam/.cache/dune)))
      (network host)
      (shell "opam exec -- make build"))
)

2025-04-15 11:58.13: Using cache hint "mirage-ci-skeleton-debian-10-ocaml-4.14"
2025-04-15 11:58.13: Waiting for resource in pool OCluster
2025-04-15 11:58.13: Waiting for worker…
2025-04-15 11:58.13: Got resource from pool OCluster
Building on clete.caelum.ci.dev
All commits already cached
HEAD is now at 924fa1b defunctorised versions of unikernels (#407)

(from ocaml/opam:debian-10-ocaml-4.14)
2025-04-15 11:58.58 ---> saved as "feee4396c1d94d93bd2f0711740834a80d493221dd8765a3fda3bfa3da34a3f1"

/: (user (uid 1000) (gid 1000))

/: (workdir /home/opam)

/home/opam: (run (shell "sudo chown opam:opam /home/opam"))
2025-04-15 11:58.58 ---> saved as "b4aec13d2c0c8862a0b012b7bf45b6c4d9baafb01deec22932d9281a2a3993ed"

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam && opam update"))
This version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.1, which can't be reverted.
You may want to back it up before going further.

Continue? [Y/n] y
Format upgrade done.

<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>
[default] synchronised from file:///home/opam/opam-repository
2025-04-15 11:59.58 ---> saved as "4b65e2cdab0e73f000c7fd1c66f5d777aef7f109b0fc71798f2edf63b3d5e373"

/home/opam: (run (network host)
                 (shell "opam repo add opam https://github.com/ocaml/opam-repository.git#7ac1b4e19a10b76522563b1a8ff9803429eb32ba"))
[ERROR] Could not update repository "opam": "/usr/bin/git fetch -q" exited with code 128 "fatal: unable to access 'https://github.com/ocaml/opam-repository.git/': Could not resolve host: github.com"
[ERROR] Initial repository fetch failed
"/usr/bin/env" "bash" "-c" "opam repo add opam https://github.com/ocaml/opam-repository.git#7ac1b4e19a10b76522563b1a8ff9803429eb32ba" failed with exit status 40
2025-04-15 12:00.55: Job failed: Failed: Build failed