these 2 derivations will be built:
  /nix/store/7gwnzgspj7fn4wiv982vm77nbvvpc7aq-nix-grpc-store-0.1.0.drv
  /nix/store/lirkfbbv16aygw2m3m0cdxgpn3pd2qf4-nix-grpc-store-exit-stress.drv