我正在創(chuàng)建這個(gè)函數(shù)來測(cè)試創(chuàng)建和停止計(jì)時(shí)器。運(yùn)行時(shí)出現(xiàn)死鎖錯(cuò)誤：package mainimport "fmt"import "time"func main() {    livenessTimer := &time.Timer{}    livenessInterval, _ := time.ParseDuration("1m")    for {        fmt.Print("Timer started")        livenessTimer = time.NewTimer(livenessInterval)        select {        case <-livenessTimer.C:            fmt.Print(time.Now())            fmt.Println("timer triggered")        }        if !livenessTimer.Stop() {            // drain timer from channel if any            fmt.Println("drain timer")            <-livenessTimer.C        }    }}當(dāng)我運(yùn)行此代碼時(shí)，我收到此錯(cuò)誤：Timer started2009-11-10 23:01:00 +0000 UTC m=+60.000000001timer triggereddrain timerfatal error: all goroutines are asleep - deadlock!goroutine 1 [chan receive]:main.main()    /tmp/sandbox748850751/prog.go:21 +0x2e0Stop建議檢查返回值并排空通道的文檔。