2015-07-13 19:01:06,758 INFO Using config files '['./DistUpgrade.cfg']'
2015-07-13 19:01:06,759 INFO uname information: 'Linux tanmoy-Lenovo-IdeaPad-Z510 3.16.0-43-generic #58-Ubuntu SMP Fri Jun 19 11:04:02 UTC 2015 x86_64'
2015-07-13 19:01:06,759 INFO apt version: '1.0.9.2ubuntu2'
2015-07-13 19:01:06,759 INFO python version: '3.4.2 (default, Jun 19 2015, 11:34:49) 
[GCC 4.9.1]'
2015-07-13 19:01:06,759 INFO release-upgrader version '15.04.14' started
2015-07-13 19:01:06,829 INFO locale: 'en_SG' 'UTF-8'
2015-07-13 19:01:07,056 DEBUG Using 'DistUpgradeViewGtk3' view
2015-07-13 19:01:07,092 DEBUG aufsOptionsAndEnvironmentSetup()
2015-07-13 19:01:07,093 DEBUG using '/tmp/upgrade-rw-m_8raywf' as aufs_rw_dir
2015-07-13 19:01:07,093 DEBUG using '/tmp/upgrade-chroot-7voqakof' as aufs chroot dir
2015-07-13 19:01:07,093 DEBUG enable dpkg --force-overwrite
2015-07-13 19:01:07,097 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2015-07-13 19:01:08,472 DEBUG lsb-release: 'utopic'
2015-07-13 19:01:08,473 DEBUG _pythonSymlinkCheck run
2015-07-13 19:01:08,488 DEBUG openCache()
2015-07-13 19:01:08,488 DEBUG No such plugin directory: ./plugins
2015-07-13 19:01:08,488 DEBUG plugins for condition 'PreCacheOpen' are '[]'
2015-07-13 19:01:08,488 DEBUG plugins for condition 'vividPreCacheOpen' are '[]'
2015-07-13 19:01:08,488 DEBUG plugins for condition 'from_utopicPreCacheOpen' are '[]'
2015-07-13 19:01:08,488 DEBUG quirks: running PreCacheOpen
2015-07-13 19:01:08,488 DEBUG running Quirks.PreCacheOpen
2015-07-13 19:01:09,013 DEBUG /openCache(), new cache size 73573
2015-07-13 19:01:09,013 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2015-07-13 19:01:09,013 DEBUG checkViewDepends()
2015-07-13 19:01:09,013 DEBUG running doUpdate() (showErrors=False)
2015-07-13 19:01:17,329 DEBUG openCache()
2015-07-13 19:01:17,330 DEBUG failed to SystemUnLock() (E:Not locked) 
2015-07-13 19:01:17,820 DEBUG /openCache(), new cache size 73573
2015-07-13 19:01:17,820 DEBUG doPostInitialUpdate
2015-07-13 19:01:17,820 DEBUG plugins for condition 'PostInitialUpdate' are '[]'
2015-07-13 19:01:17,820 DEBUG plugins for condition 'vividPostInitialUpdate' are '[]'
2015-07-13 19:01:17,820 DEBUG plugins for condition 'from_utopicPostInitialUpdate' are '[]'
2015-07-13 19:01:21,467 DEBUG Foreign: adobe-flash-properties-gtk adobe-flashplugin google-talkplugin skype skype-bin:i386
2015-07-13 19:01:21,467 DEBUG Obsolete: adobereader-enu:i386 cuda-command-line-tools-6-5 cuda-core-6-5 cuda-cublas-6-5 cuda-cublas-dev-6-5 cuda-cudart-6-5 cuda-cudart-dev-6-5 cuda-cufft-6-5 cuda-cufft-dev-6-5 cuda-curand-6-5 cuda-curand-dev-6-5 cuda-cusparse-6-5 cuda-cusparse-dev-6-5 cuda-documentation-6-5 cuda-driver-dev-6-5 cuda-license-6-5 cuda-misc-headers-6-5 cuda-npp-6-5 cuda-npp-dev-6-5 cuda-repo-ubuntu1404 cuda-samples-6-5 cuda-toolkit-6-5 cuda-visual-tools-6-5 dropbox libcuda1-340 linux-image-3.13.0-51-generic linux-image-extra-3.13.0-51-generic linux-signed-image-3.13.0-51-generic mendeleydesktop nvidia-libopencl1-340 nvidia-opencl-icd-340 oracle-java8-installer oracle-java8-set-default
2015-07-13 19:01:21,468 DEBUG updateSourcesList()
2015-07-13 19:01:21,503 DEBUG rewriteSourcesList()
2015-07-13 19:01:21,506 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu utopic main restricted'
2015-07-13 19:01:21,506 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu vivid main restricted' updated to new dist
2015-07-13 19:01:21,506 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu utopic main restricted'
2015-07-13 19:01:21,506 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu vivid main restricted' updated to new dist
2015-07-13 19:01:21,506 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu utopic-updates main restricted'
2015-07-13 19:01:21,506 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu vivid-updates main restricted' updated to new dist
2015-07-13 19:01:21,506 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu utopic-updates main restricted'
2015-07-13 19:01:21,506 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu vivid-updates main restricted' updated to new dist
2015-07-13 19:01:21,506 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu utopic universe'
2015-07-13 19:01:21,506 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu vivid universe' updated to new dist
2015-07-13 19:01:21,507 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu utopic universe'
2015-07-13 19:01:21,507 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu vivid universe' updated to new dist
2015-07-13 19:01:21,507 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu utopic-updates universe'
2015-07-13 19:01:21,507 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu vivid-updates universe' updated to new dist
2015-07-13 19:01:21,507 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu utopic-updates universe'
2015-07-13 19:01:21,507 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu vivid-updates universe' updated to new dist
2015-07-13 19:01:21,507 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu utopic multiverse'
2015-07-13 19:01:21,507 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu vivid multiverse' updated to new dist
2015-07-13 19:01:21,507 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu utopic multiverse'
2015-07-13 19:01:21,507 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu vivid multiverse' updated to new dist
2015-07-13 19:01:21,507 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu utopic-updates multiverse'
2015-07-13 19:01:21,507 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu vivid-updates multiverse' updated to new dist
2015-07-13 19:01:21,507 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu utopic-updates multiverse'
2015-07-13 19:01:21,507 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu vivid-updates multiverse' updated to new dist
2015-07-13 19:01:21,507 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu utopic-backports main restricted universe multiverse'
2015-07-13 19:01:21,507 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu vivid-backports main restricted universe multiverse' updated to new dist
2015-07-13 19:01:21,507 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu utopic-backports main restricted universe multiverse'
2015-07-13 19:01:21,508 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu vivid-backports main restricted universe multiverse' updated to new dist
2015-07-13 19:01:21,508 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu utopic-security main restricted'
2015-07-13 19:01:21,508 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu vivid-security main restricted' updated to new dist
2015-07-13 19:01:21,508 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu utopic-security main restricted'
2015-07-13 19:01:21,508 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu vivid-security main restricted' updated to new dist
2015-07-13 19:01:21,508 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu utopic-security universe'
2015-07-13 19:01:21,508 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu vivid-security universe' updated to new dist
2015-07-13 19:01:21,508 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu utopic-security universe'
2015-07-13 19:01:21,508 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu vivid-security universe' updated to new dist
2015-07-13 19:01:21,508 DEBUG examining: 'deb http://archive.ubuntu.com/ubuntu utopic-security multiverse'
2015-07-13 19:01:21,508 DEBUG entry 'deb http://archive.ubuntu.com/ubuntu vivid-security multiverse' updated to new dist
2015-07-13 19:01:21,508 DEBUG examining: 'deb-src http://archive.ubuntu.com/ubuntu utopic-security multiverse'
2015-07-13 19:01:21,508 DEBUG entry 'deb-src http://archive.ubuntu.com/ubuntu vivid-security multiverse' updated to new dist
2015-07-13 19:01:21,508 DEBUG examining: 'deb http://archive.canonical.com/ubuntu utopic partner'
2015-07-13 19:01:21,508 DEBUG entry 'deb http://archive.canonical.com/ubuntu vivid partner' updated to new dist
2015-07-13 19:01:21,508 DEBUG examining: 'deb-src http://archive.canonical.com/ubuntu utopic partner'
2015-07-13 19:01:21,509 DEBUG entry 'deb-src http://archive.canonical.com/ubuntu vivid partner' updated to new dist
2015-07-13 19:01:21,509 DEBUG examining: 'deb http://archive.canonical.com/ utopic partner'
2015-07-13 19:01:21,509 DEBUG entry 'deb http://archive.canonical.com/ vivid partner' updated to new dist
2015-07-13 19:01:21,509 DEBUG examining: 'deb http://dl.google.com/linux/talkplugin/deb/ stable main'
2015-07-13 19:01:21,510 DEBUG entry '# deb http://dl.google.com/linux/talkplugin/deb/ stable main # disabled on upgrade to vivid' was disabled (unknown mirror)
2015-07-13 19:01:25,527 DEBUG running doUpdate() (showErrors=True)
2015-07-13 19:01:57,246 DEBUG openCache()
2015-07-13 19:02:01,055 DEBUG /openCache(), new cache size 76053
2015-07-13 19:02:01,055 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')