# File lib/structured_warnings/warner.rb, line 8
  def format(warning, message, stack)
    frame = stack.shift
    # This file contains the backwards compatibility code for Ruby 2.3 and
    # lower, let's skip it
    frame = stack.shift if frame.include? 'lib/structured_warnings/kernel.rb'
    "#{frame} : #{message} (#{warning})"
  end