these 3 derivations will be built:
  /nix/store/8l2v1ddc61p8kl3shlrc26klnydkj4va-similar-3.2.0.drv
  /nix/store/8ga8hh1hqqz96fj4ka17y0v18phsfbnv-cargo-vendor-dir.drv
  /nix/store/4vmdijk3hilc4rvrjmbpw4idpf7i32sx-nix-diff-0.1.0.drv