these 3 derivations will be built:
  /nix/store/m2q1fq0hrvmxkkk6jana82anpwasn5k0-similar-3.2.0.drv
  /nix/store/6kvy1xjrx5xlhr2xri413wbncc46gn11-cargo-vendor-dir.drv
  /nix/store/i4jy4fbpycbdar2jq17n5vlkpkc4kh62-nix-diff-0.1.0.drv