使用rspec, zeus和database_cleaner以及两个不同的active_record数据库以未定义的方法‘query_options’作为nil:NilClass错误的结尾

I'd like to use zeus (0.13.3) to preload my rails environment for an rails (3.2.11) app on ruby 2.0.0 and use database_cleaner (0.9.1) to clean the databases. This is working fine if as long as I use only one mysql database. In the app we have to use two different mysql databases. I'd like to use zeus (0.13.3) to preload my rai