{"ast_node_type":"variable","tokens":[{"end":64,"kind":"keyword","start":0,"text":"let"}]}
    let crate_name = tcx.crate_name(def_path.krate).to_string();
    s.push_str(&to_disambiguator(tcx.stable_crate_id(def_path.krate).as_u64()));
    let _ = write!(s, "{}{}", crate_name.len(), crate_name);