I’m working since the past year on a Request-Tracker 4.0.7 upgrade to 4.4.3 on a huge RT instance with several customizations. Meanwhile, Debian Buster was released and I tried to adapt the migration process to that. Unfortunately, I figured out, the rt-database-upgrade script does not work properly on Debian Buster.
To demonstrate that I screencasted a Debian Buster VM RT 4.0.7 installation and an upgrade attempt to RT 4.4.3. But even an upgrade from 4.4.3 to 4.4.4 will be stopped by the same errors: segmentation faults.
You can reproduce this process by the following bash commands.
Maybe you have some ideas, meanwhile I’m will stick to Stretch and have to test if RT 4.4.3 will run smoothly after an update on Buster.