{"ast_node_type":"variable","tokens":[{"end":36,"kind":"keyword","start":0,"text":"let"}]}
    let make_coords = |span: Span| {
    let discard_all = tcx.sess.coverage_options().discard_all_spans_in_codegen;
        if discard_all { None } else { spans::make_coords(source_map, &source_file, span) }