Well unless they really fuck us over it's safe, here's what that `Executors` method is doing.  If there's real concern I would probably just replace with that implementation line.

    public static ExecutorService newFixedThreadPool(int nThreads) {
        return new ThreadPoolExecutor(nThreads, nThreads,
                                      0L, TimeUnit.MILLISECONDS,
                                      new LinkedBlockingQueue<Runnable>());
    }