these 4 derivations will be built:
  /nix/store/l17irr7ygacgfx0jsmfrl29rakh3nwys-crate-cc-1.6.0.tar.gz.drv
  /nix/store/lla7dxhgx4c0izjfx88a0g109351r7fp-cc-1.6.0.drv
  /nix/store/9fhjzhbj4yjmvq1hn6rpssji9skikqxi-cargo-vendor-dir.drv
  /nix/store/142vzxhm3sx1kv5zp9x12xz8g57dk7ks-nix-ld.drv