{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"///"}]}
/// * [b'r',b'u',b's',b't',0,0,0,5] is the first 8 bytes
/// A proc macro crate binary's ".rustc" section has following byte layout:
/// * ff060000 734e6150 is followed, it's the snappy format magic bytes,