{"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"//"}]}
                        // `UNTRANSLATABLE_DIAGNOSTIC` lint.
                        // with type `{D,Subd}iagMessage` or `impl Into<{D,Subd}iagMessage>`. Otherwise, emit an
                        let (arg_ty, arg_span) = arg_tys_and_spans[i];