src/java.base/share/classes/java/util/concurrent/ThreadPoolExecutor.java

*** 602,613 ****
--- 602,615 ----
           * serialVersionUID to suppress a javac warning.
           */
          private static final long serialVersionUID = 6138294804551838833L;
  
          /** Thread this worker is running in.  Null if factory fails. */
+         @SuppressWarnings("serial") // Not statically typed as Serializable
          final Thread thread;
          /** Initial task to run.  Possibly null. */
+         @SuppressWarnings("serial") // Not statically typed as Serializable
          Runnable firstTask;
          /** Per-thread task counter */
          volatile long completedTasks;
  
          // TODO: switch to AbstractQueuedLongSynchronizer and move