these 2 derivations will be built:
  /nix/store/wzj9pls1qwgjla7ds83pipk66pspjm0k-nix-grpc-store-0.1.0.drv
  /nix/store/jigw4cm0g3czvdqhw6hbkg3z9v8810c5-nix-grpc-store-exit-stress.drv