Cleanup after each Cask.

Library/Homebrew/cask/lib/hbc/cli/internal_audit_modified_casks.rb

@@ -45,13 +45,10 @@ module Hbc
       end
 
       def run
-        at_exit do
-          cleanup
-        end
-
         Dir.chdir git_root do
           modified_cask_files.zip(modified_casks).each do |cask_file, cask|
             audit(cask, cask_file)
+            Cleanup.run(cask) if cleanup?
           end
         end
         report_failures
@@ -121,9 +118,6 @@ module Hbc
           "#{failed_casks.join(" ")}"
       end
 
-      def cleanup
-        Cleanup.run if cleanup?
-      end
     end
   end
 end