compile bugs

```
../plz/witch/witch.go:11:2: cannot find package "github.com/v2pro/plz/countlog/output/json" in any of:
	/usr/local/Cellar/go/1.10.2/libexec/src/github.com/v2pro/plz/countlog/output/json (from $GOROOT)
	/Users/XXX/gopath/src/github.com/v2pro/plz/countlog/output/json (from $GOPATH)
```

move to printf is ok