type goroutineStatus struct {
			running  int
			firstErr error
		}
		statusc := make(chan goroutineStatus, 1)
		statusc <- goroutineStatus{running: len(c.goroutine)}
		for _, fn := range c.goroutine {
			go func(fn func() error) {
				err := fn()

				status := <-statusc
				if status.firstErr == nil {
					status.firstErr = err
				}
				status.running--
				if status.running == 0 {