show the location at intterrupted

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60671 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

bootstraptest/runner.rb

@@ -254,6 +254,7 @@ def show_progress(message = '')
     end
   end
 rescue Interrupt
+  $stderr.puts "\##{@count} #{@location}"
   raise Interrupt
 rescue Exception => err
   $stderr.print 'E'