these 2 derivations will be built:
  /nix/store/wsihfhnkxrd1225ywp8bqbc8kji9faj3-nix-grpc-store-0.2.2.drv
  /nix/store/byvm0fl8zsh0c7cl5xrn3z0cak5lprq4-nix-grpc-store-exit-stress.drv