these 2 derivations will be built:
  /nix/store/zfvwagmj6zdkmpp5bry14g22dg506m99-clan-cli-source.drv
  /nix/store/a4b81ja27855l19flchmwqw2jgy8yywq-clan-pytest-without-core.drv
building '/nix/store/zfvwagmj6zdkmpp5bry14g22dg506m99-clan-cli-source.drv' on 'ssh-ng://builder@build01.clan.lol'
building '/nix/store/zfvwagmj6zdkmpp5bry14g22dg506m99-clan-cli-source.drv'
building '/nix/store/a4b81ja27855l19flchmwqw2jgy8yywq-clan-pytest-without-core.drv' on 'ssh-ng://builder@build01.clan.lol'
error: path '/nix/store/f6jhy0zpy0i69mf1giqzf6k5k1x9fgwj-rav1e-0.8.1.tar.gz.drv' is not valid
error: Cannot build '/nix/store/a4b81ja27855l19flchmwqw2jgy8yywq-clan-pytest-without-core.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/nz4xbknv5vizmm1zsak5j0pb3w7vqqy7-clan-pytest-without-core