Description of problem:
I was running repodiff to compare f12 against f13 and got the following traceback:
New package iwl5150-firmware
Traceback (most recent call last):
  File "/usr/bin/repodiff", line 272, in <module>
    main(sys.argv[1:])
  File "/usr/bin/repodiff", line 199, in main
    print '        %s' % pkg.summary
  File "/usr/lib/python2.6/codecs.py", line 351, in write
    data, consumed = self.encode(object, self.errors)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 26: ordinal not in range(128)

Version-Release number of selected component (if applicable):
yum-utils-1.1.26-7.fc13.noarch

How reproducible:
Seem 100%

Steps to Reproduce:
repodiff "--old=http://mirrors.kernel.org/fedora/releases/12/Everything/source/SRPMS/" "--new=http://mirrors.kernel.org/fedora/releases/13/Everything/source/SRPMS/"


Additional info:

Name       : iwl5150-firmware
Arch       : noarch
Version    : 8.24.2.2
Release    : 1.fc13
Size       : 121 k
Repo       : fedora
Summary    : Firmware for Intel® Wireless 5150 A/G/N network adaptors
URL        : http://intellinuxwireless.org/
License    : Redistributable, no modification permitted
Description: This package contains the firmware required by the iwlagn driver
           : for Linux to support the iwl5150 hardware.  Usage of the firmware
           : is subject to the terms and conditions contained inside the
           : provided LICENSE file. Please read it carefully.