{"ast_node_type":"other","tokens":[{"end":33,"kind":"keyword","start":0,"text":"Ok(())"}]}
            Ok(()) => match err {
        Err(err) => match orphan_check(tcx, impl_def_id, OrphanCheckMode::Compat) {
                OrphanCheckErr::UncoveredTyParams(uncovered_ty_params) => {