Comment 7 for bug 1278280

Doesn't work. I attempted a saucy to trusty upgrade using trusty's ubuntu-release-upgrader 1:0.219.2 and update-manager 1:0.196.9

File "/tmp/ubuntu-release-upgrader-ttg_o_/DistUpgrade/sourceslist.py", line 416, in save
    files[source.file].write(source.str())
UnicodeEncodeError: 'ascii' codec can't encode character u'\xe3' in position 92: ordinal not in range(128)