读取tcp 127.0.0.1:51719->127.0.0.1:6379：读取：对等方重置连接

Question

Here is my code

func BenchmarkParallelGetSet(b *B) {
    parallel := runtime.GOMAXPROCS(0) * 8

    b.Run("redigo", func(b *B) {
        do(b, func() {
            conn := red.Get()
            //defer conn.Close()
            v, err := conn.Do("SET", "foo", "bar")
            if err != nil {
                fmt.Println(err)
                return
            }
            fmt.Println(v)
            v, err = redis.String(conn.Do("GET", "foo"))
            if err != nil {
                fmt.Println(err)
                return
            }
            fmt.Println(v)
        })
    })
}


func newPool(MaxIdle int) *redis.Pool {
    return &redis.Pool{
        MaxIdle:     MaxIdle,
        IdleTimeout: 240 * time.Second,
        Dial: func() (redis.Conn, error) {
            c, err := redis.Dial("tcp", "127.0.0.1:6379")
            if err != nil {
                return nil, err
            }
            return c, err;
        },
        TestOnBorrow: func(c redis.Conn, t time.Time) error {
            if time.Since(t) < time.Minute {
                return nil
            }
            _, err := c.Do("PING")
            return err
        },
    }
}

Error is

--- FAIL: BenchmarkParallelGetSet/redigo-8
    bench_test.go:192: read tcp 127.0.0.1:51701->127.0.0.1:6379: read: connection reset by peer

What's wrong with this? Any help is needed, thanks.