问为什么我的Golang Workerpool忽略作业？

EN

// Golang Workerpool

func worker(id int, jobs <-chan string) {
    fmt.Println("Worker", id, "initilized!")
        for {
            s := <- jobs
            time.Sleep(2 * time.Second)
            fmt.Println("Worker", id, "said:", s);
    }
}

func main() {
    // In order to use our pool of workers we need to send
    // them work and collect their results. We make 2
    // channels for this.
    jobs := make(chan string)

    // This starts up 3 workers, initially blocked
    // because there are no jobs yet.
    for w := 1; w <= 3; w++ {
        go worker(w, jobs)
    }

    for {
        reader := bufio.NewReader(os.Stdin)
        text, _ := reader.ReadString('\n')
        jobs <- text
    }
}