'run-parts: /etc/cron.weekly/mintupdate-autoremove exited with return code 100'

[LinuxOnTheDesktop]

Describe the bug

The scheduled autoremove command emails errors to the internal root account. Either these are false positives, i.e. there was no (significant) error and thus no email ought to have been sent, or else there is a problem with the scheduled command, i.e. it that command is doing something wrong. Either way, perhaps there ought to be a GUI option to disable the mail. (I presume that I have not somehow enabled the mailing, as against merely enabling the automation.)

Here is one of the emails (via Mutt).

Date: Fri, 12 Sep 2025 17:25:56 +0100 (BST)
From: Anacron root@X230
To: root@X230
Subject: Anacron job 'cron.weekly' on X230

run-parts: /etc/cron.weekly/mintupdate-autoremove exited with return code 100

To Reproduce
Perhaps merely the following.

1. Run mintupdate.
2. Edit -> Preferences -> Automation.
3. Enable, 'Remove obsolete kernels and dependencies' - except, hold on, I have that disabled already, even though the newest of the aforementioned emails is from only a few weeks ago and I do not think that I changed the setting within that period.

Expected behavior
I expect there to be no email, at least not if there is no significant error.

Distribution:

• [X ] Linux Mint
• LMDE
• Other (please specify)

Software version:
7.0.7.1

Logs:

2025.10.01@01:57 ++ Launching Update Manager
2025.10.01@01:57 ++ Initial refresh will happen in 0 day(s), 0 hour(s) and 10 minute(s)
2025.10.01@01:57 ++ Inhibited power management
2025.10.01@01:57 ++ Checking for updates
2025.10.01@01:58 ++ System is up to date
2025.10.01@01:58 ++ Tracker: Mintupdate update button was pressed recently: 11 days ago
2025.10.01@01:58 ++ Refresh finished
2025.10.01@01:58 ++ Resumed power management
2025.10.01@02:01 ++ Inhibited power management
2025.10.01@02:01 ++ Checking for updates
2025.10.01@02:01 ++ System is up to date
2025.10.01@02:01 ++ Refresh finished
2025.10.01@02:01 ++ Resumed power management