message: drake: fix missing paren
diff: @@ -3915,7 +3915,7 @@ class Runner(Builder):
  def output(self, ext):
  '''The Node of an output file. E.g., `self.output('valgrind')`
  to generate the Valgrind output for this runner.'''
  - return node('{}.{}'.format(self.__basename, ext)
  + return node('{}.{}'.format(self.__basename, ext))
  def __reporting_set(self, val):
  self.stdout_reporting = val
  