{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
    let rustc_producer = format!("rustc version {}", tcx.sess.cfg_version);
    debug!("build_compile_unit_di_node: {:?}", name_in_debuginfo);
    // FIXME(#41252) Remove "clang LLVM" if we can get GDB and LLVM to play nice.