solved the problem by modifying enum Message

exercises/enums/enums2.rs

@@ -1,14 +1,14 @@
 // enums2.rs
 // Make me compile! Execute `rustlings hint enums2` for hints!
 
-// I AM NOT DONE
+// DONE
 
 #[derive(Debug)]
 enum Message {
     // TODO: define the different variants used below
-	Move,
+	Move {x: i32, y: i32},
-	Echo,
+	Echo (String),
-	ChangeColor,
+	ChangeColor (i32, i32, i32),
 	Quit,
 }