I attempted starting 1.4.10-3+deb9u3 with a new persistence_location directory, and it started up correctly. In the crashing directory, I have a couple of retained messages and the crash appears to be during loading of those.
- Bug#922071: mosquitto dumps core on startup on armv7l Kushal Kumaran
- Bug#922071: mosquitto dumps core on startup on armv7l Kushal Kumaran