{"ast_node_type":"other","tokens":[{"end":52,"kind":"keyword","start":0,"text":"///"}]}
    /// Allows `extern "cmse-nonsecure-entry" fn()`.
    (unstable, closure_track_caller, "1.57.0", Some(87417)),
    (unstable, cmse_nonsecure_entry, "1.48.0", Some(75835)),