these 4 derivations will be built:
  /nix/store/4q4fmssmx1x1nyrmjz9ib5rn4jgywy68-rstest_macros-0.28.0.drv
  /nix/store/d535rhp53970mhxpkbwn8519hdk2h5vg-rstest-0.28.0.drv
  /nix/store/30kn30x7vwialjy5hyykyzi9kv4rlb7d-cargo-vendor-dir.drv
  /nix/store/35sb9kblrjrzy0y505ivkz1jbp4a4nvq-nix-ld.drv