UPDATE:问题不在服务器代码上，而是在Behat执行环境上。
我正在开发一个Symfony2项目，不知何故，经过几个月的开发，我引入了一个错误，导致整个应用程序崩溃，并输出以下错误消息:
PHP Fatal error: Maximum function nesting level of '100' reached, aborting! in /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Container.php on line 289
PHP Stack trace:
PHP 1. {main}() /home/vagrant/.phpstorm_helpers/behat.php:0
PHP 2. Symfony'Component'Console'Application->run() /home/vagrant/.phpstorm_helpers/behat.php:423
PHP 3. Behat'Testwork'Cli'Application->doRun() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php:126
PHP 4. Behat'Testwork'Cli'Application->createCommand() /var/www/main_api/vendor/behat/behat/src/Behat/Testwork/Cli/Application.php:96
PHP 5. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/behat/behat/src/Behat/Testwork/Cli/Application.php:138
PHP 6. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:490
PHP 7. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:943
PHP 8. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
PHP 9. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
PHP 10. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
PHP 11. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
PHP 12. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1017
PHP 13. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:490
PHP 14. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:943
PHP 15. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
PHP 16. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
PHP 17. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1017
PHP 18. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:490
[...]
PHP 93. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1017
PHP 94. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:490
PHP 95. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:943
PHP 96. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
PHP 97. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
PHP 98. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1017
PHP 99. Symfony'Component'DependencyInjection'Container->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:469
Fatal error: Maximum function nesting level of '100' reached, aborting! in /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Container.php on line 289
Call Stack:
0.0010 412904 1. {main}() /home/vagrant/.phpstorm_helpers/behat.php:0
0.4579 3401528 2. Symfony'Component'Console'Application->run() /home/vagrant/.phpstorm_helpers/behat.php:423
0.4900 3747408 3. Behat'Testwork'Cli'Application->doRun() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php:126
0.4900 3747392 4. Behat'Testwork'Cli'Application->createCommand() /var/www/main_api/vendor/behat/behat/src/Behat/Testwork/Cli/Application.php:96
1.7987 7874496 5. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/behat/behat/src/Behat/Testwork/Cli/Application.php:138
1.7987 7876432 6. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:490
1.7991 7879072 7. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:943
1.7991 7879560 8. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
1.7991 7880392 9. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
1.7991 7880880 10. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.0948 14305112 11. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.0948 14305200 12. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1017
3.0948 14305496 13. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:490
3.0949 14306208 14. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:943
3.0949 14306696 15. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.1179 14383304 16. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.1179 14383416 17. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1017
3.1180 14383760 18. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:490
[...]
3.1192 14540512 79. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:490
3.1193 14540952 80. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:943
3.1193 14541440 81. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.1193 14542096 82. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.1193 14542144 83. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1019
3.1193 14542584 84. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:943
3.1193 14543072 85. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.1193 14543728 86. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.1193 14543816 87. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1017
3.1194 14544112 88. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:490
3.1244 14552552 89. Symfony'Component'DependencyInjection'ContainerBuilder->callMethod() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:975
3.1244 14553384 90. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1165
3.1244 14553872 91. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.1244 14554464 92. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.1244 14554568 93. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1017
3.1245 14554896 94. Symfony'Component'DependencyInjection'ContainerBuilder->createService() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:490
3.1246 14555512 95. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:943
3.1246 14556000 96. array_map() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.1247 14557184 97. Symfony'Component'DependencyInjection'ContainerBuilder->resolveServices() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1015
3.1247 14557280 98. Symfony'Component'DependencyInjection'ContainerBuilder->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:1017
3.1247 14557424 99. Symfony'Component'DependencyInjection'Container->get() /var/www/main_api/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/ContainerBuilder.php:469
Process finished with exit code 255
我认为这是因为服务之间的循环依赖，可能吗?如果是这样的话，Symfony中是否有一种系统的方法来查找服务之间的循环依赖关系?
最后，这不是我的代码中的问题，而是在Behat执行环境中的问题。
我必须在/etc/php5/cli/php.ini文件中使用以下条目更改最大嵌套级别(我在Debian上):
[XDebug]
xdebug.max_nesting_level = 1000