ntifier">chan</span> <span class="special">=</span>
    <span class="identifier">wait_all_until_error_source</span><span class="special">(</span>
            <span class="special">[](){</span> <span class="keyword">return</span> <span class="identifier">sleeper</span><span class="special">(</span><span class="string">"wauess_third"</span><span class="special">,</span>  <span class="number">150</span><span class="special">);</span> <span class="special">},</span>
            <span class="special">[](){</span