fn search_ambiguity_causes<'tcx>(
infcx: &InferCtxt<'tcx>,
goal: Goal<'tcx, Predicate<'tcx>>,
causes: &mut FxIndexSet<IntercrateAmbiguityCause<'tcx>>,
)
fn search_ambiguity_causes<'tcx>(
infcx: &InferCtxt<'tcx>,
goal: Goal<'tcx, Predicate<'tcx>>,
causes: &mut FxIndexSet<IntercrateAmbiguityCause<'tcx>>,
)