===DONE===
--EXPECTF--
Test
-exception 'http\Exception\RuntimeException' with message 'http\Client::dequeue(): Could not dequeue request while executing callbacks' in %sgh-issue50.php:9
+http\Exception\RuntimeException: http\Client::dequeue(): Could not dequeue request while executing callbacks in %sgh-issue50.php:9
Stack trace:
#0 %sgh-issue50.php(9): http\Client->dequeue(Object(http\Client\Request))
#1 [internal function]: {closure}(Object(http\Client), Object(http\Client\Request), 18, 'GET / HTTP/1.1%s...')