chore: update Rust to 2024 edition (#2066)

easytier/src/peers/peer_conn_ping.rs

@@ -1,27 +1,27 @@
 use std::{
     sync::{
-        atomic::{AtomicU32, Ordering},
         Arc,
+        atomic::{AtomicU32, Ordering},
     },
     time::Duration,
 };
 
-use rand::{thread_rng, Rng};
+use rand::{Rng, thread_rng};
 use tokio::{
     sync::broadcast,
     task::JoinSet,
-    time::{timeout, Interval},
+    time::{Interval, timeout},
 };
 use tracing::Instrument;
 
 use crate::{
-    common::{error::Error, PeerId},
+    common::{PeerId, error::Error},
     peers::traffic_metrics::AggregateTrafficMetrics,
     tunnel::{
+        TunnelError,
         mpsc::MpscTunnelSender,
         packet_def::{PacketType, ZCPacket},
         stats::{Throughput, WindowLatency},
-        TunnelError,
     },
 };