these 2 derivations will be built:
  /nix/store/5p3h7jj9jrlmk23dgqjpj7d8svqw2p3z-cargo-vendor-dir.drv
  /nix/store/b4rxn55mv5g80ghbqqf0wiifwch9mc1k-nix-wire-0.1.0.drv