对golang版本问题有要求

[tianser]

至少1.7版本吧，看这里https://golang.org/doc/go1.7关于runtime包中的CallersFrames
1.6版本：
github.com/hzwy23/asofdate/vendor/go.uber.org/zap/stacktrace.go:63: undefined: runtime.CallersFrames

1.8版本：
[root@web asofdate]# ./asofdate
create mysql dbhandle success.
./asofdate flag redefined: graceful
panic: ./asofdate flag redefined: graceful

goroutine 1 [running]:
flag.(*FlagSet).Var(0xc42001c240, 0xe2f6c0, 0xe8d484, 0xb22fc0, 0x8, 0xb3913a, 0x21)
/root/go/src/flag/flag.go:793 +0x420
flag.BoolVar(0xe8d484, 0xb22fc0, 0x8, 0x887400, 0xb3913a, 0x21)
/root/go/src/flag/flag.go:572 +0x72
github.com/hzwy23/asofdate/vendor/github.com/astaxie/beego/grace.init.1()
/root/goproject/src/github.com/hzwy23/asofdate/vendor/github.com/astaxie/beego/grace/grace.go:93 +0x60
github.com/hzwy23/asofdate/vendor/github.com/astaxie/beego/grace.init()
/root/goproject/src/github.com/hzwy23/asofdate/vendor/github.com/astaxie/beego/grace/server.go:307 +0x89
github.com/hzwy23/asofdate/vendor/github.com/astaxie/beego.init()
/root/goproject/src/github.com/hzwy23/asofdate/vendor/github.com/astaxie/beego/tree.go:581 +0x87
github.com/hzwy23/asofdate/hauth/service.init()
/root/goproject/src/github.com/hzwy23/asofdate/hauth/service/sql_define.go:4 +0x7d
main.init()
/root/goproject/src/asofdate/main.go:16 +0x4e
[root@web asofdate]# vim /root/goproject/src/github.com/hzwy23/asofdate/vendor/github.com/astaxie/beego/grace/grace.go
[root@web asofdate]# go version
go version go1.8.1 linux/amd64