See attached screenshot. These appear occasionally, usually just after logging out or logging in.
These seem like something that should be logged, not shown messages about, unless directly interacting with cron jobs.
I haven't been able to reproduce the messages on demand. It just happens occasionally, I assume whenever a job is launched.
I'd like to ensure that these messages aren't being shown to anonymous users on the site. For the time being, I've just commented out the drupal_set_message() in serial.class.php to make sure they're not shown publicly.
Closed: outdated
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I'm closing this since Drupal 7 is now unsupported and there will be no more development on the Drupal 7 branch of Ultimate Cron either.
Thank you for taking the time and effort in reporting this issue, even though it never got resolved.