{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":")"}]}
    ) -> Result<TyCtxtFeed<'tcx, CrateNum>, CrateError> {
        root: &CrateRoot,
        assert_eq!(self.metas.len(), tcx.untracked().stable_crate_ids.read().len());