Fix bench, check it in CI.

benches/bench.rs

@@ -42,6 +42,7 @@ mod wire {
             sack_permitted: false,
             sack_ranges: [None, None, None],
             payload: &PAYLOAD_BYTES,
+            timestamp: None,
         };
         let mut bytes = vec![0xa5; repr.buffer_len()];
 

ci.sh

@@ -68,6 +68,12 @@ check() {
     for features in ${FEATURES_CHECK[@]}; do
         cargo +$version check --no-default-features --features "$features"
     done
+
+    cargo +$version check --examples
+
+    if [[ $version == "nightly" ]]; then
+        cargo +$version check --benches
+    fi
 }
 
 clippy() {