以下是我的环境：
> OS X 10.5
> Xcode 3.1.4
> rvm 0.1.38
>ruby1.8.9-p399(通过rvm)
> rails 2.3.8
当rake尝试运行我的测试时,我开始收到此错误：
bash$rake Virtual timer expired bash$ # End of output!
并启用跟踪：
bash$rake --trace ** Invoke default (first_time) ** Invoke test (first_time) ** Execute test ** Invoke test:units (first_time) ** Invoke db:test:prepare (first_time) ** Invoke db:abort_if_pending_migrations (first_time) ** Invoke environment (first_time) ** Execute environment ** Execute db:abort_if_pending_migrations ** Execute db:test:prepare ** Invoke db:test:load (first_time) ** Invoke db:test:purge (first_time) ** Invoke environment ** Execute db:test:purge ** Execute db:test:load ** Invoke db:schema:load (first_time) ** Invoke environment ** Execute db:schema:load Virtual timer expired bash$