these 2 derivations will be built:
  /nix/store/7vamgdrp0jrc66ks8p2q5n4k5nbk2z9k-cargo-vendor-dir.drv
  /nix/store/4mf4hjjyhgpqswapv0kzmk6hhn6048aa-horae-clippy-0.1.0.drv