these 2 derivations will be built:
  /nix/store/z93ggjs825a8mpp6wypqrxbar9gal4jx-nix-grpc-store-0.1.0.drv
  /nix/store/86a3z9rfkirn8zm7hbl9xlvralxx5hl2-nix-grpc-store-exit-stress.drv