mu is crashing with ***stack smashing detected*** error

I'm running an 'mu' find command (it's part of the maildir-utils package). From the little information I've been able to find with a google search, it looks like it's overrunning the end of an array, and this is some more aggressive memory checking enabled with the newer version of gcc in xenial. Is this enough information to file a bug report, or is there some more information that I should be gathering?

Here's the actual command I'm running and the crash output:

$ mu find "hello" --threads --include-related -n 500
*** stack smashing detected ***: mu terminated
Wed May 3 21:13:44 2000

Aborted (core dumped)