Fix broken tests

Author: brson

src/test/run-fail/unwind-misc-1.rs

@@ -20,7 +20,7 @@ fn main() {
     let mut arr = ~[];
     for uint::range(0u, 10u) |i| {
         arr += ~[@~"key stuff"];
-        map.insert(arr, arr + ~[@~"value stuff"]);
+        map.insert(copy arr, arr + ~[@~"value stuff"]);
         if arr.len() == 5 {
             fail;
         }