{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"diag.span_label(self.span,"}]}
                diag.span_label(self.span, format!("found `{key}` used as a key more than once"));
            AttributeParseErrorReason::DuplicateKey(key) => {
                diag.code(E0538);