The following message or similar will be displayed:
<div style="border: 1px solid #A3B1BF; padding: .8em 1em; background-color: #E6F2FF; margin: 0px 1em;">
:<i><pre>perl-PlRPC-0.2020-13.fc19.noarch has missing requires of perl(:MODULE_COMPAT_5.16.2):ruby-mysql-2.8.2-9.fc19.x86_64 has missing requires of libruby.so.2.0()(64bit):Error: check all</pre></i></div><br />
To correct these issues, remove the two bad packages (though this could be dangerous if you had a lot of apps installed (in which case we do not recommend it):