these 2 derivations will be built:
  /nix/store/x3r36v2424xy5db1khq8jsjk2nycbs88-nix-grpc-store-0.1.0.drv
  /nix/store/wgxrn18055ghshlhms450p87wgd2n6rg-nix-grpc-store-exit-stress.drv