how to close tails goroutine

[Linuxlovers]

goroutine 889
2020/11/17 09:13:00 Seeked /opt/6938e171-7ffd-49f8-8e62-c2daa1c8d63c/1.1.4/log.txt - &{Offset:0 Whence:2}
2020/11/17 09:13:00 Seeked /opt/acf8de17-6e26-4dda-b185-67e4070f3bf8/1.1.3/log.txt - &{Offset:0 Whence:2}
goroutine 894
goroutine 894

i use it to watch an log ,but it aways add goroutine numbers ,how to work out it ?

[sdddean]

try t.Stop()