Clarify the reason the swarm can't connect

azalea/src/swarm/mod.rs

@@ -671,7 +671,17 @@ impl Swarm {
                     let delay = (Duration::from_secs(5) * 2u32.pow(disconnects.min(16)))
                         .min(Duration::from_secs(15));
                     let username = account.username.clone();
-                    error!("Error joining as {username}: {e}. Waiting {delay:?} and trying again.");
+
+                    if let JoinError::Disconnect { reason } = &e {
+                        error!(
+                            "Error joining as {username}, server says: \"{reason}\". Waiting {delay:?} and trying again."
+                        );
+                    } else {
+                        error!(
+                            "Error joining as {username}: {e}. Waiting {delay:?} and trying again."
+                        );
+                    }
+
                     tokio::time::sleep(delay).await;
                 }
             }