Description of problem:
Since the last update of dnf, I get a traceback in /var/log/messages, when dnf is making his cache.

Version-Release number of selected component (if applicable):
dnf-0.4.13-2.fc20.noarch

How reproducible:
Always

Steps to Reproduce:
1. systemctl start dnf-makecache
2. look in /var/log/messages
3.

Actual results:
Feb 12 01:41:29 rodin-666 systemd: Starting dnf makecache...
Feb 12 01:41:29 rodin-666 dnf: Config time: 0.007
Feb 12 01:41:29 rodin-666 dnf: cachedir: /var/cache/dnf/x86_64/20
Feb 12 01:41:29 rodin-666 dnf: dnf version: 0.4.13
Feb 12 01:41:29 rodin-666 dnf: Traceback (most recent call last):
Feb 12 01:41:29 rodin-666 dnf: File "/usr/lib64/python2.7/logging/__init__.py", line 874, in emit
Feb 12 01:41:29 rodin-666 dnf: stream.write(fs % msg.encode("UTF-8"))
Feb 12 01:41:29 rodin-666 dnf: File "/usr/lib/python2.7/site-packages/dnf/i18n.py", line 38, in write
Feb 12 01:41:29 rodin-666 dnf: self.stream.write(s.decode(self.encoding, 'replace'))
Feb 12 01:41:29 rodin-666 dnf: UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in position 2: ordinal not in range(128)
Feb 12 01:41:29 rodin-666 dnf: Logged from file commands.py, line 760
Feb 12 01:41:29 rodin-666 dnf: Metadata cache refreshed recently.
Feb 12 01:41:29 rodin-666 systemd: Started dnf makecache.

Additional info:
I have my system in fr_CH.utf-8
u'\xe9' is probably 'é'