these 2 derivations will be built:
  /nix/store/72gyggz3sg5x16hm5qvl39cbzqrwgw4h-cargo-vendor-dir.drv
  /nix/store/3drqc86xhy3ingvm7bcxm7vhlvj3q0h2-horae-clippy-0.1.0.drv