class Guard::RSpec::Deprecator

def _keep_failed_option
  return unless options.key?(:keep_failed)
  _deprecated(
    "The :keep_failed option is deprecated." \
    " Please set new :failed_mode option value to" \
    " :keep instead." \
    " https://github.com/guard/guard-rspec#list-of-available-options"
  )
end