t.Errorf("librust_proto should have librust_exported_proto included as an additional crate for generated source, instead got: %#v",librust_proto.additionalCrates)
}
// Make sure the default crates aren't being included.
t.Errorf("librust_proto should not have included libprotobuf as an additional crate for generated source, instead got: %#v",librust_proto.additionalCrates)
}
// And make sure that non-protobuf crates aren't getting included either.