Function rustc_trait_selection::traits::specialize::report_conflicting_impls

fn report_conflicting_impls<'tcx>(
    tcx: TyCtxt<'tcx>,
    overlap: OverlapError<'tcx>,
    impl_def_id: LocalDefId,
    used_to_be_allowed: Option<FutureCompatOverlapErrorKind>
) -> Result<(), ErrorGuaranteed>