these 2 derivations will be built:
  /nix/store/0ffa37vac2mx12v0ibq143xdkrzlqy20-nix-grpc-store-0.1.0-beta.4.drv
  /nix/store/fbf3zw3b1sk0nrkdjxi9bsg87yq0fgni-nix-grpc-store-exit-stress.drv