these 2 derivations will be built:
  /nix/store/zidgl0f1nmig8qrlsrsqjdlkfmchwpz8-nix-grpc-store-0.1.0.drv
  /nix/store/dgc259vnn02mxdq4a4vlp07azjlms2al-nix-grpc-store-exit-stress.drv