completed.assertCompletionNotExpected(timeoutMillis);
      assertThat(thread.getState()).isNotEqualTo(Thread.State.TERMINATED);
    }
  }

  private static class JoinTarget extends DelayedActionRunnable {
    JoinTarget(long tMinus) {
      super(tMinus);
    }

    @Override
    protected void doAction() {}
  }

  private static class Release extends DelayedActionRunnable {