{"ast_node_type":"other","tokens":[{"end":33,"kind":"keyword","start":0,"text":"Err(err)"}]}
                    Err(err) => {
                    Ok(LitKind::Float(f, _)) => accumulator.push_str(&format!("-{f}")),
                        guar = Some(report_lit_error(&cx.sess.psess, err, token_lit, e.span));