Offenses: example.rb:3:15: W: Lint/ErbNewArguments: Passing safe_level with the 2nd argument of ERB.new is deprecated. Do not use it, and specify other arguments as keyword arguments. ERB.new('hi', nil, '-', '@output_buffer') ^^^ example.rb:3:20: W: Lint/ErbNewArguments: Passing trim_mode with the 3rd argument of ERB.new is deprecated. Use keyword argument like ERB.new(str, trim_mode: '-') instead. ERB.new('hi', nil, '-', '@output_buffer') ^^^ example.rb:3:25: W: Lint/ErbNewArguments: Passing eoutvar with the 4th argument of ERB.new is deprecated. Use keyword argument like ERB.new(str, eoutvar: '@output_buffer') instead. ERB.new('hi', nil, '-', '@output_buffer') ^^^^^^^^^^^^^^^^