class Utils::LineFormatter

def dump_line_to_error_file(example)
  @errors_lst.flock File::LOCK_EX
  @errors_lst.puts "%s\n%3.3fs %s\n%s\n%s" % [
    location(example), run_time(example), example.full_description,
    Term::ANSIColor.uncolored(dump_failure_for_error_file(example)),
    (%w[ {{{ ] +
     format_backtrace(example.execution_result[:exception].backtrace, example) +
     %w[ }}} ]) * ?\n
  ]
ensure
  @errors_lst.flock File::LOCK_UN
end