Function infringing_fields_error

fn infringing_fields_error<'tcx>(
    tcx: TyCtxt<'tcx>,
    infringing_tys: impl Iterator<Item = (Span, Ty<'tcx>, InfringingFieldsReason<'tcx>)>,
    lang_item: LangItem,
    impl_did: LocalDefId,
    impl_span: Span,
) -> ErrorGuaranteed