these 2 derivations will be built:
  /nix/store/4jy63gnw6y3bxrb7gimj4p33imcnqm7f-cargo-vendor-dir.drv
  /nix/store/jv6x9pxncdkxb5vz7d1pws0q7h1sgm5n-orf_fetcher.drv