{"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"//"}]}
        //    will be emitted if `can_emit_warnings` is true.
        //    `-A warnings` or `--cap-lints=xxx` on the command line. In which case, the diagnostic
        let skip = err_level == rustc_errors::Level::Warning && !sess.dcx().can_emit_warnings();