I have modules with classes for magento1 and 2, in last beta release they cause the following error during `setup:di:compile` ``` Fatal error: Class 'Mage_Core_Helper_Abstract' not found in /srv/magento_beta_full/app/code/Cotya/Elasticgento/Model/m1/Data.php on line 38 ``` It did work before thx to this patch: https://github.com/magento/magento2/pull/986 and seemed to stop after the move to the new magento cli script.