Is it normal for cron to log at level err?

Installing and Using OpenWrt
1

I see that normal cron jobs that finish OK log at level cron.err. It is confusing, but is it expected?

Sun Jul 28 12:30:01 2019 cron.err crond[1184]: USER root pid 17904 cmd ...

2

Either that job exit code is non-zero, or cron has limited log level support.