在为我正在处理的项目执行 git clone 后,我将我的 rails 更新为 nitrous 和 Rails 4.2.0.beta2 运行 rails server
=> Booting WEBrick
=> Rails 4.2.0.beta2 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
[2014-12-02 20:13:56] INFO WEBrick 1.3.1
[2014-12-02 20:13:56] INFO ruby 2.1.4 (2014-10-27) [x86_64-linux]
[2014-12-02 20:13:56] INFO WEBrick::HTTPServer#start: pid=495 port=3000
^C[2014-12-02 20:14:48] INFO going to shutdown ...
[2014-12-02 20:14:48] INFO WEBrick::HTTPServer#start done.
我去3000端口
We couldn't find a server running on this port – are you sure there is a server running?
Make sure to bind your server to host 0.0.0.0 (instead of localhost/127.0.0.1).
我究竟做错了什么?