these 5 derivations will be built:
  /nix/store/ks2rsyynx52bik6avh7kzrr23rbmc748-vendor-registry.drv
  /nix/store/3rmh5i31ri1a1mi0w0jvxj6im8n2mzz1-vendor-cargo-deps.drv
  /nix/store/cpgk08f67431wqkvi1cckzg0ih9ypgnf-source.drv
  /nix/store/a5v1q60w49ssyzjxvbgf6k8p1732d24n-harmonia-deps-3.3.0.drv
  /nix/store/5cdzxpr0qzgvc6gbwgx3maz3mlbc8pw6-harmonia-llvm-cov-3.3.0.drv