{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"(unstable,"}]}
    (unstable, abi_avr_interrupt, "1.45.0", Some(69664)),
    /// Allows `extern "avr-interrupt" fn()` and `extern "avr-non-blocking-interrupt" fn()`.
    /// Allows `extern "cmse-nonsecure-call" fn()`.