Fix issue with "Waiting for cleanup" message appearing twice in some cases. [closes GH-145]

CHANGELOG.md

@@ -1,5 +1,7 @@
 ## 0.6.0 (unreleased)
 
+  - Fixed issue with "Waiting for cleanup" message appearing twice in
+    some cases. [GH-145]
   - Converted CLI to use Thor. As a tradeoff, there are some backwards
     incompatibilities:
       * `vagrant package` - The `--include` flag now separates filenames

lib/vagrant/action.rb

@@ -4,6 +4,7 @@ module Vagrant
   # the environment.
   class Action
     include Util
+    @@reported_interrupt = false
 
     class << self
       # Returns the list of registered actions.
@@ -59,8 +60,9 @@ module Vagrant
           abort
         end
 
-        env.ui.info "Waiting for cleanup before exiting..."
+        env.ui.info "Waiting for cleanup before exiting..." if !@@reported_interrupt
         action_environment.error!(:interrupt)
+        @@reported_interrupt = true
       end
 
       Busy.busy(int_callback) { callable.call(action_environment) }