module Rake

    stdin, stdout, stderr, wait_thr = Open3.popen3(@cmd)
    @stdout = stdout.readlines.join
    @stderr = stderr.readlines.join
    if wait_thr.value.exitstatus != 0
stdin, stdout, stderr, wait_thr = Open3.popen3(cmd)
if wait_thr.value.exitstatus != 0
  task.texrunner.logger.fatal("...\n#{stdout.readlines.join}")
end

end