Apply remaining clippy suggestions from clippy 1.67

bench/src/bin/bulk.rs

@@ -79,10 +79,10 @@ async fn server(endpoint: quinn::Endpoint, opt: Opt) -> Result<()> {
                 };
                 trace!("stream established");
 
-                let _: tokio::task::JoinHandle<Result<()>> = tokio::spawn(async move {
+                tokio::spawn(async move {
                     drain_stream(&mut recv_stream, opt.read_unordered).await?;
                     send_data_on_stream(&mut send_stream, opt.download_size).await?;
-                    Ok(())
+                    Ok::<_, anyhow::Error>(())
                 });
             }
 

perf/src/bin/perf_server.rs

@@ -53,7 +53,7 @@ async fn main() {
 
 async fn run(opt: Opt) -> Result<()> {
     let (key, cert) = match (&opt.key, &opt.cert) {
-        (&Some(ref key), &Some(ref cert)) => {
+        (Some(key), Some(cert)) => {
             let key = fs::read(key).context("reading key")?;
             let cert = fs::read(cert).expect("reading cert");
 

quinn-proto/src/connection/mod.rs

@@ -1337,7 +1337,7 @@ impl Connection {
         let loss_delay = cmp::max(rtt.mul_f32(self.config.time_threshold), TIMER_GRANULARITY);
 
         // Packets sent before this time are deemed lost.
-        let lost_send_time = now - loss_delay;
+        let lost_send_time = now.checked_sub(loss_delay).unwrap();
         let largest_acked_packet = self.spaces[pn_space].largest_acked_packet.unwrap();
         let packet_threshold = self.config.packet_threshold as u64;
         let mut size_of_lost_packets = 0u64;