Comment 1 for bug 1838954

Fixed in the following commit (and refined in a couple subsequent commits). Change is landed to production, and snaps updated.

commit 5d104bce612db56f3274c667ee7b008da5e68c18
Author: Bryce Harrington <email address hidden>
Date: Thu Oct 3 07:19:19 2019 -0700

    Implement a systemd watchdog daemon to run import-source-packages.py

    Git Ubuntu's package importing functionality is invoked via the
    import-source-packages.py script. Previously, this script would be
    manually started, and on error needed manual intervention.

    Instead, wrap the script in a systemd service that starts it up
    initially and restarts it on crash. A watchdog timer is used to detect
    if the script has hung, and restarts it after a suitable delay.

    Another service is added for sending emails when the service crashes,
    extracting status from the journal. Errors can also be reviewed using
    journalctl normally.

    By default, everything is configured to be installable in production,
    but configuration considerations are covered in documentation. There
    are no unit tests for this, however some testing/validation tips are
    identified in the documentation.

    LP: #1838954