these 2 derivations will be built:
  /nix/store/vswaxg1wv3jsqcv1hfi3zn8fx8s2m24q-cargo-vendor-dir.drv
  /nix/store/a8srckxdqj5frldcq00f1r0lhfb80wfl-nixfmt-wasm-0.5.3.drv