{"ast_node_type":"variable","tokens":[{"end":94,"kind":"keyword","start":0,"text":"let"}]}
        let id1 = StableCrateId::new(Symbol::intern("foo"), false, vec!["2".to_string()], "");
        let id0 = StableCrateId::new(Symbol::intern("foo"), false, vec!["1".to_string()], "");