{"ast_node_type":"variable","tokens":[{"end":36,"kind":"keyword","start":0,"text":"let"}]}
    let canonical_sysroot_lib_path =
    let sysroot_lib_path = &sess.target_tlib_path.dir;
        { try_canonicalize(sysroot_lib_path).unwrap_or_else(|_| sysroot_lib_path.clone()) };