`virsh dumpxml dom | xmlstarlet sel -t -v '//domain/devices/interface[1]/mac/@address'` does what I'd expect and prints out the MAC. But `virsh dumpxml dom | virt-inspector --xpath '//domain/devices/interface[1]/mac/@address'` segfaults.

Stack trace:

#0  0x00007ffff6fb7ac4 in free () from /usr/lib/libc.so.6
#1  0x00007ffff75538d9 in xmlFreeNodeList () from /usr/lib/libxml2.so.2
#2  0x00007ffff7553696 in xmlFreeDoc () from /usr/lib/libxml2.so.2
#3  0x0000000000409dcc in guestfs_int_cleanup_xmlFreeDoc (ptr=0x7fffffffdc28)
    at cleanup.c:87
#4  0x0000000000409be2 in do_xpath (
    query=0x7fffffffe1a6 "//domain/devices/interface[1]/mac/@address")
    at inspector.c:805
#5  0x0000000000406f30 in main (argc=3, argv=0x7fffffffddd8) at inspector.c:250


Running version 1.30.4 on archlinux.