I can (finally) reproduce this crash with the following commands:
# chroot clean-saucy-chroot
# apt-get install ubuntu-release-upgrader language-pack-ru vim-tiny
# export LC_ALL=ru_RU.UTF-8
# export LANG=en_US.UTF-8
# export LANGUAGE=en_US
# do-release-upgrade
ctrl-c
# cd /tmp/ubuntu-release-upgrader-*
# vi DistUpgradeCache.py in line 1139 go from 50 to 5000000
# ./dist-upgrade.py
this trigges the crash for me. Different values may not trigger it
I can (finally) reproduce this crash with the following commands: release- upgrader language-pack-ru vim-tiny release- upgrader- *
# chroot clean-saucy-chroot
# apt-get install ubuntu-
# export LC_ALL=ru_RU.UTF-8
# export LANG=en_US.UTF-8
# export LANGUAGE=en_US
# do-release-upgrade
ctrl-c
# cd /tmp/ubuntu-
# vi DistUpgradeCache.py in line 1139 go from 50 to 5000000
# ./dist-upgrade.py
this trigges the crash for me. Different values may not trigger it