diff --git a/examples/coap/src/main.rs b/examples/coap/src/main.rs
index c7ec871ad..253ce43f9 100644
--- a/examples/coap/src/main.rs
+++ b/examples/coap/src/main.rs
@@ -94,7 +94,7 @@ where
         R,
         );
 
-    let mut handler = coap_message_demos::full_application_tree(log)
+    let handler = coap_message_demos::full_application_tree(log)
         .at(
             &["stdout"],
             coap_scroll_ring_server::BufferHandler::new(&buffer),
diff --git a/examples/coap/src/udp_nal/mod.rs b/examples/coap/src/udp_nal/mod.rs
index bd0ad3871..8464ef08b 100644
--- a/examples/coap/src/udp_nal/mod.rs
+++ b/examples/coap/src/udp_nal/mod.rs
@@ -78,7 +78,7 @@ impl<'a> ConnectedUdp<'a> {
     /// unconnected.
     pub async fn connect(socket: udp::UdpSocket<'a>, /*, ... */) -> Result<Self, udp::BindError> {
         // This is really just a copy of the provided `embedded_nal::udp::UdpStack::connect` method
-        todo!()
+        todo!("use {:p}", &socket)
     }
 }
 
diff --git a/src/lib/coapcore/src/seccontext.rs b/src/lib/coapcore/src/seccontext.rs
index 396c75786..e4d1f5d84 100644
--- a/src/lib/coapcore/src/seccontext.rs
+++ b/src/lib/coapcore/src/seccontext.rs
@@ -615,7 +615,8 @@ impl<'a, H: coap_handler::Handler, L: Write, Crypto: lakers::Crypto> coap_handle
                                 self.log,
                                 "Got credential by value: {:?}..",
                                 &id_cred_i.value.get_slice(0, 5)
-                            );
+                            )
+                            .unwrap();
 
                             cred_i = lakers::CredentialRPK::new(id_cred_i.value)
                                 // FIXME What kind of error do we send here?