these 6 derivations will be built:
  /nix/store/9rcm03fvykmdm71yf42wvyvwg24vgy4s-source.drv
  /nix/store/7ayx241839lrklvmzzi04cg67pph9bbf-cargo-package-ed25519-dalek-3.0.0-pre.7.drv
  /nix/store/jjkiyamq5ngfxy2cqbmilxsvrqbj7k0v-vendor-registry.drv
  /nix/store/aql9sw44wxr9pzwrrbycifznhrpg2s90-vendor-cargo-deps.drv
  /nix/store/a36jzp686bqh5p06979rkmrwp21h69ja-tincd-deps-0.1.0.drv
  /nix/store/5cm56zdgjd5rwqyjy1yx7r3yff90vsr4-tincd-0.1.0.drv