these 2 derivations will be built:
  /nix/store/4z33ihx1kg166y7xd2yn4k1lynpqrbb9-nix-grpc-store-0.2.0.drv
  /nix/store/7r30sy61mdjlh4r0js0xmrz7v5rq8n4i-nix-grpc-store-exit-stress.drv