fix: do not print errors twice

plugins/common/log.go

@@ -90,7 +90,9 @@ func LogFailWithError(err error) {
 			fmt.Fprintf(os.Stderr, " !     %s\n", e.Error())
 		}
 	} else {
-		fmt.Fprintf(os.Stderr, " !     %s\n", err.Error())
+		if err.Error() != "" {
+			fmt.Fprintf(os.Stderr, " !     %s\n", err.Error())
+		}
 	}
 	if errExit, ok := err.(ErrWithExitCode); ok {
 		os.Exit(errExit.ExitCode())

plugins/cron/subcommands.go

@@ -143,6 +143,11 @@ func CommandRun(appName string, cronID string, detached bool) error {
 		Args:        args,
 		StreamStdio: true,
 	})
+	if err != nil {
+		// return an error with an empty message to avoid
+		// printing the error message twice
+		return errors.New("")
+	}
 	return err
 }