Investigating crashed runs

We are running a self-hosted instance of Prefect, currently on version 2.11.0, with an sqlite database. Our flow runs are entering the ‘Crashed’ state the moment they finish downloading the flow code, and we’re having trouble getting to the root cause. We tried enabling debug output, but this is all we see in the logs:

09:59:17.224 | ERROR | prefect.infrastructure.process - Process ‘zeta913-erebor’ exited with status code: -11

The status code seems to indicate a segmentation fault. How can we investigate the root cause or see where this is coming from?