these 7 derivations will be built:
  /nix/store/9db9dz094xg6cdbbl8a6ml2pnyg60mi4-cargo-src-quote-1.0.47.drv
  /nix/store/z4444ncdpxx42c6g4256bdpb89a7xhfd-cargo-package-quote-1.0.47.drv
  /nix/store/8sm7kvj7rj5imfdjqsx4j921c6pcvrs9-vendor-registry.drv
  /nix/store/ksw8ds1kanqvzkda4np4zh6k4a7f78s3-vendor-cargo-deps.drv
  /nix/store/pj9srfl2d7q54hdrkhch2vis6v93a2bp-source.drv
  /nix/store/4bvz7ynrqprxqgjkrvc2qgng4qlc7v8k-harmonia-deps-3.1.0.drv
  /nix/store/n8mbp3gx38r4cmk6k8aw3jl7mr9rizf0-harmonia-llvm-cov-3.1.0.drv