these 3 derivations will be built:
  /nix/store/2s4g2nd2qssqf7z6hwr6cv9pr3y5zhim-embedded-io-0.7.1.drv
  /nix/store/fk15p52bwpiwap0v95bwc7hbycspsdqp-cargo-vendor-dir.drv
  /nix/store/cslibg590k6q08jab26rqgydv9mqd3ni-nix-ld.drv