{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"tracked!(symbol_mangling_version,"}]}
    tracked!(symbol_mangling_version, Some(SymbolManglingVersion::V0));
    tracked!(split_debuginfo, Some(SplitDebuginfo::Packed));
    tracked!(target_cpu, Some(String::from("abc")));