想要屏蔽掉reqwest的日志，但是设置envfilter不起作用。大佬帮忙看看

let local_time = OffsetTime::new(
            UtcOffset::from_hms(8, 0, 0).unwrap(),
            format_description!("[year]-[month]-[day] [hour]:[minute]:[second].[subsecond digits:3]"),
        );

        let env_filter = EnvFilter::builder().parse("reqwest=warn").unwrap();

        let fmt = tracing_subscriber::fmt()
        .with_env_filter(env_filter)
        .with_thread_names(true)
        .with_timer(local_time);