2016-04-16 12:52:59,167 INFO Using config files '['./DistUpgrade.cfg.trusty']'
2016-04-16 12:52:59,168 INFO uname information: 'Linux prachand-X555LAB 3.13.0-85-generic #129-Ubuntu SMP Thu Mar 17 20:50:15 UTC 2016 x86_64'
2016-04-16 12:52:59,168 INFO apt version: '1.0.1ubuntu2'
2016-04-16 12:52:59,168 INFO python version: '3.4.3 (default, Oct 14 2015, 20:28:29) 
[GCC 4.8.4]'
2016-04-16 12:52:59,168 INFO release-upgrader version '15.10.14.2' started
2016-04-16 12:52:59,302 INFO locale: 'en_IN' 'ISO8859-1'
2016-04-16 12:52:59,491 DEBUG Using 'DistUpgradeViewGtk3' view
2016-04-16 12:52:59,566 DEBUG aufsOptionsAndEnvironmentSetup()
2016-04-16 12:52:59,568 DEBUG using '/tmp/upgrade-rw-fj2k3ran' as aufs_rw_dir
2016-04-16 12:52:59,568 DEBUG using '/tmp/upgrade-chroot-33adnkpd' as aufs chroot dir
2016-04-16 12:52:59,569 DEBUG enable dpkg --force-overwrite
2016-04-16 12:52:59,581 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2016-04-16 12:53:01,176 DEBUG lsb-release: 'trusty'
2016-04-16 12:53:01,177 DEBUG _pythonSymlinkCheck run
2016-04-16 12:53:01,212 DEBUG openCache()
2016-04-16 12:53:01,213 DEBUG No such plugin directory: ./plugins
2016-04-16 12:53:01,213 DEBUG plugins for condition 'PreCacheOpen' are '[]'
2016-04-16 12:53:01,213 DEBUG plugins for condition 'wilyPreCacheOpen' are '[]'
2016-04-16 12:53:01,213 DEBUG plugins for condition 'from_trustyPreCacheOpen' are '[]'
2016-04-16 12:53:01,213 DEBUG quirks: running PreCacheOpen
2016-04-16 12:53:01,213 DEBUG running Quirks.PreCacheOpen
2016-04-16 12:53:02,084 DEBUG /openCache(), new cache size 74210
2016-04-16 12:53:02,084 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2016-04-16 12:53:02,084 DEBUG checkViewDepends()
2016-04-16 12:53:02,085 DEBUG running doUpdate() (showErrors=False)
2016-04-16 12:53:20,578 DEBUG openCache()
2016-04-16 12:53:21,371 DEBUG /openCache(), new cache size 74210
2016-04-16 12:53:21,372 DEBUG doPostInitialUpdate
2016-04-16 12:53:21,372 DEBUG plugins for condition 'PostInitialUpdate' are '[]'
2016-04-16 12:53:21,372 DEBUG plugins for condition 'wilyPostInitialUpdate' are '[]'
2016-04-16 12:53:21,372 DEBUG plugins for condition 'from_trustyPostInitialUpdate' are '[]'
2016-04-16 12:53:22,802 DEBUG MetaPkgs: ubuntu-desktop
2016-04-16 12:53:26,031 DEBUG Foreign: skype skype-bin:i386
2016-04-16 12:53:26,031 DEBUG Obsolete: libllvm3.8 libllvm3.8:i386 linux-headers-3.13.0-84 linux-headers-3.13.0-84-generic linux-image-3.13.0-84-generic linux-image-extra-3.13.0-84-generic linux-signed-image-3.13.0-84-generic sysvinit-backlight va-driver-all vdpau-driver-all
2016-04-16 12:53:26,032 DEBUG updateSourcesList()
2016-04-16 12:53:26,171 DEBUG rewriteSourcesList()
2016-04-16 12:53:26,178 DEBUG examining: 'deb http://in.archive.ubuntu.com/ubuntu/ trusty main restricted multiverse'
2016-04-16 12:53:26,179 DEBUG entry 'deb http://in.archive.ubuntu.com/ubuntu/ wily main restricted multiverse' updated to new dist
2016-04-16 12:53:26,179 DEBUG examining: 'deb-src http://in.archive.ubuntu.com/ubuntu/ trusty main restricted multiverse'
2016-04-16 12:53:26,179 DEBUG entry 'deb-src http://in.archive.ubuntu.com/ubuntu/ wily main restricted multiverse' updated to new dist
2016-04-16 12:53:26,179 DEBUG examining: 'deb http://in.archive.ubuntu.com/ubuntu/ trusty universe'
2016-04-16 12:53:26,180 DEBUG entry 'deb http://in.archive.ubuntu.com/ubuntu/ wily universe' updated to new dist
2016-04-16 12:53:26,180 DEBUG examining: 'deb-src http://in.archive.ubuntu.com/ubuntu/ trusty universe'
2016-04-16 12:53:26,180 DEBUG entry 'deb-src http://in.archive.ubuntu.com/ubuntu/ wily universe' updated to new dist
2016-04-16 12:53:26,180 DEBUG examining: 'deb http://in.archive.ubuntu.com/ubuntu/ trusty-backports main universe restricted multiverse'
2016-04-16 12:53:26,180 DEBUG entry 'deb http://in.archive.ubuntu.com/ubuntu/ wily-backports main universe restricted multiverse' updated to new dist
2016-04-16 12:53:26,180 DEBUG examining: 'deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-backports main universe restricted multiverse'
2016-04-16 12:53:26,181 DEBUG entry 'deb-src http://in.archive.ubuntu.com/ubuntu/ wily-backports main universe restricted multiverse' updated to new dist
2016-04-16 12:53:26,181 DEBUG examining: 'deb http://in.archive.ubuntu.com/ubuntu/ trusty-security main restricted multiverse'
2016-04-16 12:53:26,181 DEBUG entry 'deb http://in.archive.ubuntu.com/ubuntu/ wily-security main restricted multiverse' updated to new dist
2016-04-16 12:53:26,181 DEBUG examining: 'deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-security main restricted multiverse'
2016-04-16 12:53:26,181 DEBUG entry 'deb-src http://in.archive.ubuntu.com/ubuntu/ wily-security main restricted multiverse' updated to new dist
2016-04-16 12:53:26,182 DEBUG examining: 'deb http://in.archive.ubuntu.com/ubuntu/ trusty-security universe'
2016-04-16 12:53:26,182 DEBUG entry 'deb http://in.archive.ubuntu.com/ubuntu/ wily-security universe' updated to new dist
2016-04-16 12:53:26,182 DEBUG examining: 'deb-src http://in.archive.ubuntu.com/ubuntu/ trusty-security universe'
2016-04-16 12:53:26,182 DEBUG entry 'deb-src http://in.archive.ubuntu.com/ubuntu/ wily-security universe' updated to new dist
2016-04-16 12:53:26,182 DEBUG examining: 'deb http://archive.canonical.com/ubuntu trusty partner'
2016-04-16 12:53:26,182 DEBUG entry 'deb http://archive.canonical.com/ubuntu wily partner' updated to new dist
2016-04-16 12:53:26,183 DEBUG examining: 'deb-src http://archive.canonical.com/ubuntu trusty partner'
2016-04-16 12:53:26,183 DEBUG entry 'deb-src http://archive.canonical.com/ubuntu wily partner' updated to new dist
2016-04-16 12:53:26,183 DEBUG examining: 'deb http://archive.canonical.com/ trusty partner'
2016-04-16 12:53:26,183 DEBUG entry 'deb http://archive.canonical.com/ wily partner' updated to new dist
2016-04-16 12:53:26,184 DEBUG examining: 'deb-src http://archive.canonical.com/ trusty partner'
2016-04-16 12:53:26,184 DEBUG entry 'deb-src http://archive.canonical.com/ wily partner' updated to new dist
2016-04-16 12:53:26,184 DEBUG examining: 'deb http://in.archive.ubuntu.com/ubuntu/ trusty-updates main universe restricted multiverse'
2016-04-16 12:53:26,184 DEBUG entry 'deb http://in.archive.ubuntu.com/ubuntu/ wily-updates main universe restricted multiverse' updated to new dist
2016-04-16 12:53:26,184 DEBUG examining: 'deb http://in.archive.ubuntu.com/ubuntu/ trusty-proposed main universe restricted multiverse'
2016-04-16 12:53:26,184 DEBUG entry 'deb http://in.archive.ubuntu.com/ubuntu/ wily-proposed main universe restricted multiverse' updated to new dist
2016-04-16 12:53:26,186 DEBUG running doUpdate() (showErrors=True)
2016-04-16 13:09:07,006 ERROR IOError/SystemError in cache.update(): 'W:Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/wily/main/binary-amd64/Packages  Hash Sum mismatch
, W:Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/wily/main/i18n/Translation-en  Hash Sum mismatch
, E:Some index files failed to download. They have been ignored, or old ones used instead.'. Retrying (currentRetry: 0)
2016-04-16 13:10:08,149 ERROR IOError/SystemError in cache.update(): 'W:Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/wily/main/i18n/Translation-en  Hash Sum mismatch
, E:Some index files failed to download. They have been ignored, or old ones used instead.'. Retrying (currentRetry: 1)
2016-04-16 13:10:51,094 DEBUG openCache()
2016-04-16 13:10:51,094 DEBUG failed to SystemUnLock() (E:Not locked) 
2016-04-16 13:10:56,156 DEBUG /openCache(), new cache size 78606
2016-04-16 13:10:56,156 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2016-04-16 13:11:01,113 DEBUG Installing 'xserver-xorg-video-all' (Distro KeepInstalledPkgs rule)