Fix broken tests

Author: brson

src/test/run-pass/hashmap-memory.rs

@@ -41,8 +41,8 @@ mod map_reduce {
 
     fn start_mappers(ctrl: Chan<ctrl_proto>, inputs: ~[~str]) {
         for inputs.each |i| {
-            let i = *i;
-            task::spawn(|move i| map_task(ctrl, i) );
+            let i = copy *i;
+            task::spawn(|move i| map_task(ctrl, copy i) );
         }
     }
 

src/test/run-pass/issue-2804.rs

@@ -67,7 +67,7 @@ fn add_interfaces(store: int, managed_ip: ~str, device: std::map::HashMap<~str,
         std::json::List(interfaces) =>
         {
           do vec::map(interfaces) |interface| {
-                add_interface(store, managed_ip, *interface)
+                add_interface(store, copy managed_ip, copy *interface)
           }
         }
         _ =>