新手 帮我看看我哪里写错了 不加换行打印不出 单行不加换行可以打印的

fn main() {
  let total: i32 = 100000;
  let barlen: i32 = 40;
  println!("\n\n");

  for i in 0..total + 1 {
    // 计算百分比
    let progress = i as f64 / total as f64 * 100 as f64;
    // 完成进度
    let complete = i as f64 / total as f64 * barlen as f64;
    // 剩余进度
    let incomplete = barlen - (complete as i32);
    let mut s = String::new();
    s.push_str("\x1b[42m");
    s.push_str(&(" ".repeat(complete as usize)));
    s.push_str("\x1b[49m");
    s.push_str("\x1b[47m");
    s.push_str(&(" ".repeat(incomplete as usize)));
    s.push_str("\x1b[49m");
    let progress = format!("{:.2} %", progress);
    let down_space = " ".repeat(barlen as usize - progress.len());
    let down = format!("{}{}", down_space, progress);
    // 可以打印
    let out = format!("\x1b[2A\r\x1b[0J{}\n{}\n", s, down);
    // 打印不出来
    // let out = format!("\x1b[1A\r\x1b[0J{}\n{}", s, down);
    print!("{}", out);
  }
}