>&lt;&gt;</span></code> from the queue, we must now loop
          over <code class="computeroutput"><span class="identifier">future</span><span class="special">&lt;&gt;</span></code>
          items. Of course we must limit that iteration! If we launch only <code class="computeroutput"><span class="identifier">count</span></code> producer fibers, the <code class="computeroutput"><span class="special">(</span><span class="identifier">count</span><span class="special">+</span><span class="number">1</span><sp