I've already mentioned it in bug 221977, but it appears that there's no other
bug entry dealing with it. Every time I run semanage (arguments don't matter), I
see:
# semanage
Failed to translate booleans.
[Errno 2] No such file or directory: '/usr/share/selinux/devel/policy.xml'
semanage {boolean|login|user|port|interface|fcontext|translation} -{l|D} [-n]
(...)

Judging from the change log, it should be fixed in 2.0.31-14 and maybe it partly
is - semanage seems to work, only printing those two lines upon every invocation.

Oh, and the messages show up when I'm updating selinux-policy-targeted, it looks
a little scary as I'm in enforcing mode :)