rake失败,“虚拟计时器已过期”

以下是我的环境:

• 操作系统X 10.5
• XCOD3.1.4
• RVM 0.1.38
• Ruby 1.8.9-p399(通过RVM)
• Rails 2.3.8

当Rake尝试运行我的测试时,我开始出现此错误:

bash$ rake
Virtual timer expired
bash$  # End of output!

并且启用跟踪:

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$