Librenms causing the snmp daemon? on IOS-XE device to crash

I have a 3850-48T running IOS-XE 15.0(1)EX2 (UniversalK9) that seems to experience a crash of the SNMP module/daemon when librenms tries to run various SNMP commands against it.

My librenms install is:

Version 1.42 - Thu Aug 02 2018 15:38:47 GMT-0500
DB Schema #257
Web Server Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.1.10
PHP 7.1.10
MySQL 5.6.38
RRDtool 1.4.8

Are there any commands and switches I can run to see what might be going on? I have tried poller and discovery, but is there any way to increase verbosity?

found -d and -v.