class RSpec::Matchers::BuiltIn::Compound

def compound_failure_message
  "#{indent_multiline_message(matcher_1.failure_message.sub(/\n+\z/, ''))}" \
  "\n\n...#{conjunction}:" \
  "\n\n#{indent_multiline_message(matcher_2.failure_message.sub(/\A\n+/, ''))}"
end