{"ast_node_type":"other","tokens":[{"end":20,"kind":"keyword","start":0,"text":"Ok(())"}]}
        Ok(()) => {}
    match orphan_check(tcx, impl_def_id, OrphanCheckMode::Proper) {
        Err(err) => match orphan_check(tcx, impl_def_id, OrphanCheckMode::Compat) {