{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"//"}]}
            // Checks the validity of lint names derived from the command line.
        for &(ref lint_name, level) in &self.sess.opts.lint_opts {
            let (tool_name, lint_name_only) = parse_lint_and_tool_name(lint_name);