these 2 derivations will be built:
  /nix/store/6j5lvx058c9bk315d8nbqm87iv5i50yf-nix-grpc-store-0.1.0.drv
  /nix/store/a3y60372mn32n8r2mjg2y7rqdg56a5y7-nix-grpc-store-exit-stress.drv