MariaDB Galera Cluster crashed with

I ran into this crash while doing testing of donor nodes.

I was running a two node cluster while doing an insert of 3 million rows to one server. When this insert was ongoing to node 1, I killed the mysqld process on node 2 and started it up back again.

I repeated this process a few times and it seemed to work until it crashed. At the time of the crash the joining of the node took noticeably longer. After node 2 failed to start, I could not start again.

Attached are the configuration file and the contents of the /var/lib/mysql/ folder on the node which crashed.