these 4 derivations will be built:
  /nix/store/i8h3c1hzxxv14gcbqbp6b9y9szrgyy8b-vendor-registry.drv
  /nix/store/kpxgakwhf33g1sbkamqdalcmc11iyfqk-vendor-cargo-deps.drv
  /nix/store/2am09bp1ip8m6p4y2cp3npk9kvaryff3-harmonia-deps-3.3.0.drv
  /nix/store/i622h5jnizda6fvlga3gh5ihhb2vgkbm-harmonia-llvm-cov-3.3.0.drv