--- jsr166/src/test/tck/JSR166TestCase.java	2019/08/20 23:06:11	1.258
+++ jsr166/src/test/tck/JSR166TestCase.java	2019/09/05 17:27:07	1.260
@@ -754,8 +754,8 @@ public class JSR166TestCase extends Test
      */
     public void threadRecordFailure(Throwable t) {
         System.err.println(t);
-        dumpTestThreads();
-        threadFailure.compareAndSet(null, t);
+        if (threadFailure.compareAndSet(null, t))
+            dumpTestThreads();
     }
 
     public void setUp() {
@@ -1456,11 +1456,11 @@ public class JSR166TestCase extends Test
         } catch (InterruptedException fail) {
             threadUnexpectedException(fail);
         }
-	Thread.State state;
-	if ((state = t.getState()) != Thread.State.TERMINATED) {
-	    t.interrupt();
-	    threadFail("timed out waiting for thread to terminate; "
-		       + "state=" + state);
+        Thread.State state;
+        if ((state = t.getState()) != Thread.State.TERMINATED) {
+            t.interrupt();
+            threadFail("timed out waiting for thread to terminate; "
+                       + "state=" + state);
         }
     }