ruby-on-rails - ガードから Ctrl-c を押すと、割り込み通知が返されます

Question

ガードを実行しましたが、正常に動作していますが、Ctrl-C を押すと、標準の Bye... が表示され、以下に貼り付けた出力が表示されます。誰が何が起こっているのか説明できますか? 間違って動作しているようには見えません。知りたいだけです。

Users-MacBook-Pro:tasks user$ guard
Guard::RSpec is running, with RSpec 2!
Running all specs
No examples found.


Finished in 0.00007 seconds
0 examples, 0 failures
Bye bye...
/Library/Ruby/Gems/1.8/gems/listen-0.4.7/lib/listen/turnstile.rb:19:in `pop': Interrupt
    from /Library/Ruby/Gems/1.8/gems/listen-0.4.7/lib/listen/turnstile.rb:19:in `wait'
    from /Library/Ruby/Gems/1.8/gems/guard-1.2.3/lib/guard.rb:163:in `start'
    from /Library/Ruby/Gems/1.8/gems/guard-1.2.3/lib/guard/cli.rb:100:in `start'
    from /Library/Ruby/Gems/1.8/gems/thor-0.15.4/lib/thor/task.rb:27:in `send'
    from /Library/Ruby/Gems/1.8/gems/thor-0.15.4/lib/thor/task.rb:27:in `run'
    from /Library/Ruby/Gems/1.8/gems/thor-0.15.4/lib/thor/invocation.rb:120:in `invoke_task'
    from /Library/Ruby/Gems/1.8/gems/thor-0.15.4/lib/thor.rb:275:in `dispatch'
    from /Library/Ruby/Gems/1.8/gems/thor-0.15.4/lib/thor/base.rb:425:in `start'
    from /Library/Ruby/Gems/1.8/gems/guard-1.2.3/bin/guard:6
    from /usr/bin/guard:23:in `load'
    from /usr/bin/guard:23
Users-MacBook-Pro:tasks user$