clean up

modules/testlogger/testlogger.go

@@ -173,7 +173,8 @@ func Init() {
 	log.RegisterEventWriter("test", newTestLoggerWriter)
 }
 
-func Panicf(format string, args ...any) {
-	// don't call os.Exit, otherwise the "defer" functions won't be executed
-	panic(fmt.Sprintf(format, args...))
+// MainErrorf is used to report an error from TestMain and return a non-zero value to indicate the failure
+func MainErrorf(msg string, a ...any) int {
+	_, _ = fmt.Fprintf(os.Stderr, msg+"\n", a...)
+	return 1
 }