diff --git a/core/src/filter/ptree.rs b/core/src/filter/ptree.rs
index d21bda7a..b0626881 100644
--- a/core/src/filter/ptree.rs
+++ b/core/src/filter/ptree.rs
@@ -1200,7 +1200,7 @@ impl PTree {
 
 impl fmt::Display for PTree {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "Tree {:?}\n,{}", &self.filter_layer, self.pprint())?;
+        write!(f, "Tree {:?}\n,{}", self.filter_layer, self.pprint())?;
         Ok(())
     }
 }
diff --git a/core/src/multicore/channel_dispatcher.rs b/core/src/multicore/channel_dispatcher.rs
index ac28065c..b63ddf7c 100644
--- a/core/src/multicore/channel_dispatcher.rs
+++ b/core/src/multicore/channel_dispatcher.rs
@@ -143,7 +143,7 @@ impl<T: Send + 'static> ChannelDispatcher<T> {
 
         match &mut *channels {
             Channels::PerCore(map) => {
-                for (_, (sender_result, _)) in map.iter_mut() {
+                for (sender_result, _) in map.values_mut() {
                     *sender_result = None;
                 }
             }
diff --git a/core/src/protocols/stream/tls/parser.rs b/core/src/protocols/stream/tls/parser.rs
index 6cf28251..2be1949f 100644
--- a/core/src/protocols/stream/tls/parser.rs
+++ b/core/src/protocols/stream/tls/parser.rs
@@ -368,7 +368,17 @@ impl Tls {
         }
 
         // update state machine
-        match tls_state_transition(self.state, msg, direction) {
+        //
+        // Note: `tls_state_transition` from the `tls-parser` crate
+        // doesn't handle the TLS 1.3 middlebox-compatibility ChangeCipherSpec
+        // transition (RFC 8446).
+        let transition =
+            if self.state == TlsState::ServerHello && matches!(msg, TlsMessage::ChangeCipherSpec) {
+                Ok(TlsState::ClientChangeCipherSpec)
+            } else {
+                tls_state_transition(self.state, msg, direction)
+            };
+        match transition {
             Ok(s) => self.state = s,
             Err(_) => {
                 self.state = TlsState::Invalid;
diff --git a/core/src/runtime/online.rs b/core/src/runtime/online.rs
index 82672352..c57ef853 100644
--- a/core/src/runtime/online.rs
+++ b/core/src/runtime/online.rs
@@ -74,7 +74,7 @@ where
         log::info!("Initializing RX Cores...");
         let mut rx_cores: BTreeMap<CoreId, RxCore<S>> = BTreeMap::new();
         let mut core_map: BTreeMap<CoreId, Vec<RxQueue>> = BTreeMap::new();
-        for (_port_id, port) in ports.iter() {
+        for port in ports.values() {
             for (rxqueue, core_id) in port.queue_map.iter() {
                 core_map.entry(*core_id).or_default().push(*rxqueue);
             }
@@ -107,7 +107,7 @@ where
         self.start_ports();
 
         log::info!("Launching RX cores...");
-        for (core_id, _rx_core) in self.rx_cores.iter() {
+        for core_id in self.rx_cores.keys() {
             let role = unsafe { dpdk::rte_eal_lcore_role(core_id.raw()) };
             if role != dpdk::rte_lcore_role_t_ROLE_RTE {
                 log::error!("Attempted to launch non-DPDK core");