Assertion failed: (error == 0), function main, file /usr/src/usr.sbin/bhyve/bhyverun.c, line 1376.
Abort trap (core dumped)
exit value is 134
Entering a garbage -U <UUID> value on a bhyve(8) launch string will produce an Abort trap rather than "invalid input" error message. Perhaps input validation and an error message would be more desirable, and consistent with other error handling in bhyve(8).
Michael, happy to take a look at this.
Got a simple PR here https://github.com/JamesRM/freebsd-src/pull/1 if you want to take a look while I figure out how to get this onto phabricator.