{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"//"}]}
        // FIXME(const_trait_impl): revert to span_bug?
    fn build_error(&self, ccx: &ConstCx<'_, 'tcx>, span: Span) -> Diag<'tcx> {
        ccx.dcx().create_err(errors::RawPtrComparisonErr { span })