{"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"is_no_builtins"}]}
    is_no_builtins => { cdata.root.no_builtins }
    extern_crate => { cdata.extern_crate.map(|c| &*tcx.arena.alloc(c)) }
    symbol_mangling_version => { cdata.root.symbol_mangling_version }