如题

我把tracing的初始化写在一个独立文件，main程序调用，格式什么都没有问题，但是就是不写入文件

请教正确写法

pub fn init_log(log_level: &String, evn: &String) {
    LOGINIT.call_once(|| {
            let level = match log_level.to_lowercase().as_str() {
              "error" => Level::ERROR,
              "warn" => Level::WARN,
              "info" => Level::INFO,
              "debug" => Level::DEBUG,
              "trace" => Level::TRACE,
                _ => Level::INFO
            };

            let local_time = OffsetTime::new(
                UtcOffset::from_hms(8, 0, 0).unwrap(),
                format_description!("[year]-[month]-[day] [hour]:[minute]:[second].[subsecond digits:3]"),
            );
        
            match evn.as_str().cmp("dev").is_eq() {
                true => {
                    let file_appender: RollingFileAppender = tracing_appender::rolling::daily("logs", "server.log");
                    let (non_blocking, _guard) = tracing_appender::non_blocking(file_appender);
                    tracing_subscriber::fmt()
                    .with_writer(non_blocking)
                    .with_max_level(level)
                    .with_timer(local_time)
                    .with_thread_names(true)
                    .with_thread_ids(true)
                    .init();
                },
                false => {
                    tracing_subscriber::fmt()
                    .with_max_level(Level::DEBUG)
                    .with_timer(local_time)
                    .with_thread_names(true)
                    .init();
                }
            };
    })
}