these 6 derivations will be built:
  /nix/store/d6ng7immapayiblrh38pac9sn1aqr54r-cargo-package-actix-files-0.7.3.drv
  /nix/store/4pkgvbwaiy1jykz39iwsn19c28a61nks-vendor-registry.drv
  /nix/store/32f02cm5bs118bcxzkwx46ab1gq78y6h-vendor-cargo-deps.drv
  /nix/store/lg38g4z7yj6qbk1gv2lmxjh478in6q7x-source.drv
  /nix/store/4q22716m1769shc7c968sqnanxq3j62r-harmonia-deps-3.3.0.drv
  /nix/store/0m7xp597adcp6b4gq61jrjnc4j9m4i6d-harmonia-llvm-cov-3.3.0.drv