At image time: | /usr/bin/gawk is needed by libcheck-0.9.9-r0.i586 Looks like that's a magic dependency from rpmdepends, and gawk hasn't been built.
Other builds says /bin/gawk, so we've host contamination.
Fixed in http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=c206007235df3e00c21a1cbf30e8a1bccc07a9e5