{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"//"}]}
            // `#[rustc_const_panic_str]` is treated like `lang = "begin_panic"` by rustc CTFE.
        if attrs.by_key(sym::rustc_const_panic_str).exists() {
            return Some(LangItem::BeginPanic);