--- jsr166/src/test/loops/CancelledFutureLoops.java	2014/12/31 17:00:58	1.7
+++ jsr166/src/test/loops/CancelledFutureLoops.java	2015/08/10 06:47:33	1.8
@@ -44,7 +44,7 @@ public final class CancelledFutureLoops
         pool.shutdown();
     }
 
-    static final class FutureLoop implements Callable {
+    static final class FutureLoop implements Callable<Object> {
         private int v = rng.next();
         private final ReentrantLock lock = new ReentrantLock();
         private final LoopHelpers.BarrierTimer timer = new LoopHelpers.BarrierTimer();