Avoid opening log output before start &

Replace tracing logs with task monitor

cmd/sing-box/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"os"
 	"time"
 
@@ -37,7 +38,7 @@ func main() {
 
 func preRun(cmd *cobra.Command, args []string) {
 	if disableColor {
-		log.SetStdLogger(log.NewFactory(log.Formatter{BaseTime: time.Now(), DisableColors: true}, os.Stderr, nil).Logger())
+		log.SetStdLogger(log.NewDefaultFactory(context.Background(), log.Formatter{BaseTime: time.Now(), DisableColors: true}, os.Stderr, "", nil, false).Logger())
 	}
 	if workingDir != "" {
 		_, err := os.Stat(workingDir)