--- old/test/jdk/java/util/concurrent/tck/JSR166TestCase.java	2021-01-09 11:36:17.500767992 -0800
+++ new/test/jdk/java/util/concurrent/tck/JSR166TestCase.java	2021-01-09 11:36:17.196770384 -0800
@@ -1227,8 +1227,9 @@
         } catch (TimeoutException success) {
         } catch (Exception fail) {
             threadUnexpectedException(fail);
-        } finally { future.cancel(true); }
+        }
         assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
+        assertFalse(future.isDone());
     }
 
     /**