fn live_symbols_and_ignored_derived_traits<'tcx>() -> Result<&'tcx (LocalDefIdSet, LocalDefIdMap<FxIndexSet<DefId>>), ErrorGuaranteed>fn live_symbols_and_ignored_derived_traits<'tcx>() -> Result<&'tcx (LocalDefIdSet, LocalDefIdMap<FxIndexSet<DefId>>), ErrorGuaranteed>