For some targets, packages are missing from the repos created. E.g. for Core2: http://autobuilder.yoctoproject.org/pub/nightly/20130327-1/rpm/core2/ packages like man and mc are missing.
This should be fixed with http://git.yoctoproject.org/cgit/cgit.cgi/yocto-autobuilder/commit/?h=eflanagan/yocto-autobuilder-refactor&id=9d85aaf1d0369039fc0e7630d8a561e114001f20
Verified.