these 4 derivations will be built:
  /nix/store/b40rbhxixrki3jmb86wcsj1vjhf3q9yn-crate-cc-1.4.7.tar.gz.drv
  /nix/store/idhkqkpz7rlbydqnbrpdjl5x44zvdglj-cc-1.4.7.drv
  /nix/store/pm4ycnn1ihyqf7hc6ghdmb4ar4qy7jb4-cargo-vendor-dir.drv
  /nix/store/pbhls4rrkxhfh8d2224i87h5dkdk94im-nix-ld.drv