1 files changed, 12 insertions, 9 deletions
diff --git a/src/test/java/com/google/devtools/build/lib/concurrent/KeyedLockerTest.java b/src/test/java/com/google/devtools/build/lib/concurrent/KeyedLockerTest.java
index c6b94615c1..9370aeafe5 100644
--- a/src/test/java/com/google/devtools/build/lib/concurrent/KeyedLockerTest.java
+++ b/src/test/java/com/google/devtools/build/lib/concurrent/KeyedLockerTest.java
@@ -24,20 +24,19 @@ import com.google.devtools.build.lib.concurrent.KeyedLocker.AutoUnlocker;
 import com.google.devtools.build.lib.concurrent.KeyedLocker.AutoUnlocker.IllegalUnlockException;
 import com.google.devtools.build.lib.testutil.TestUtils;
 import com.google.devtools.build.lib.util.Preconditions;
-
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-
 import java.util.HashSet;
 import java.util.Set;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
 
 /** Base class for tests for {@link KeyedLocker} implementations. */
 public abstract class KeyedLockerTest {
@@ -163,7 +162,8 @@ public abstract class KeyedLockerTest {
       }
     };
     for (int i = 0; i < NUM_EXECUTOR_THREADS; i++) {
-      executorService.submit(wrapper.wrap(runnable));
+      @SuppressWarnings("unused") 
+      Future<?> possiblyIgnoredError = executorService.submit(wrapper.wrap(runnable));
     }
     boolean interrupted = ExecutorUtil.interruptibleShutdown(executorService);
     Throwables.propagateIfPossible(wrapper.getFirstThrownError());
@@ -208,8 +208,10 @@ public abstract class KeyedLockerTest {
         }
       }
     };
-    executorService.submit(wrapper.wrap(runnable1));
-    executorService.submit(wrapper.wrap(runnable2));
+    @SuppressWarnings("unused")
+    Future<?> possiblyIgnoredError = executorService.submit(wrapper.wrap(runnable1));
+    @SuppressWarnings("unused")
+    Future<?> possiblyIgnoredError1 = executorService.submit(wrapper.wrap(runnable2));
     boolean interrupted = ExecutorUtil.interruptibleShutdown(executorService);
     Throwables.propagateIfPossible(wrapper.getFirstThrownError());
     if (interrupted || runnableInterrupted.get()) {
@@ -262,7 +264,8 @@ public abstract class KeyedLockerTest {
       }
     };
     for (int i = 0; i < NUM_EXECUTOR_THREADS; i++) {
-      executorService.submit(wrapper.wrap(runnable));
+      @SuppressWarnings("unused")
+      Future<?> possiblyIgnoredError = executorService.submit(wrapper.wrap(runnable));
     }
     boolean interrupted = ExecutorUtil.interruptibleShutdown(executorService);
     Throwables.propagateIfPossible(wrapper.getFirstThrownError());