{"ast_node_type":"import","tokens":[{"end":90,"kind":"keyword","start":0,"text":"///"}]}
    /// Allows the use of `#[cfg(overflow_checks)` to check if integer overflow behaviour.
    (unstable, cfg_contract_checks, "1.86.0", Some(128044)),
    (unstable, cfg_overflow_checks, "1.71.0", Some(111466)),