forgot-interpolator.scala:4: warning: looks like an interpolated String; did you forget the interpolator?
  def f = "Put the $bippy in the $bippy!" // warn
          ^
forgot-interpolator.scala:14: warning: looks like an interpolated String; did you forget the interpolator?
  def f = """Put the ${println("bippy")} in the bippy!""" // warn
          ^
error: No warnings can be incurred under -Xfatal-warnings.
two warnings found
one error found