these 5 derivations will be built:
  /nix/store/rac98qbyb271gbsxv2z670v765id2lkk-vendor-registry.drv
  /nix/store/0w80c744m09xg0qx7svqfxdq7n6y6r1s-vendor-cargo-deps.drv
  /nix/store/12cljcgd4vrd22d0s86rxv7zmcg994hh-source.drv
  /nix/store/3w61mafxravg54k2yxfywcn7ax3208bb-harmonia-deps-3.1.0.drv
  /nix/store/dncvaxmxgs2ss5dvahmrpl91igw1dlpm-harmonia-llvm-cov-3.1.0.drv