these 2 derivations will be built:
  /nix/store/ya2mccypxzj9zv890zyyasl9xvwij8jc-nix-grpc-store-0.2.3.drv
  /nix/store/wbhwjd5c561dx7fvh4hfkcbx9vihdc9c-nix-grpc-store-exit-stress.drv