need to read ownership stuff now.. stack heap inbound

exercises/06_move_semantics/move_semantics3.rs

@@ -6,7 +6,9 @@ fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
 }
 
 fn main() {
-    // You can optionally experiment here.
+    let vec0 = vec![22, 44, 66];
+    let vec1 = fill_vec(vec0);
+    println!("{:?}", vec1);
 }
 
 #[cfg(test)]