these 3 derivations will be built:
  /nix/store/vfsfzhlc6x4nnh82hcii71nkir9mzaxz-similar-3.2.0.drv
  /nix/store/s1020993s5m7355mb020xyfnraly6r63-cargo-vendor-dir.drv
  /nix/store/v09nqm5qwj9gyf5pvmvsyaj1c4vr2h6b-nix-diff-0.1.0.drv