{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"(unstable,"}]}
    (unstable, never_type, "1.13.0", Some(35121)),
    /// Allows the `!` type. Does not imply 'exhaustive_patterns' (below) any more.
    /// Allows diverging expressions to fall back to `!` rather than `()`.