On an Ubuntu 14.04 system I installed the libglib2.0-0 package, then modified my /etc/apt/sources.list file from trusty to xenial, tried to install libglib2.0-0 and then experienced the crash in this bug report.
I performed the same steps but added xenial-proposed to my /etc/apt/sources.list file and then the upgrade wanted to also install dpkg among other things. (trusty-amd64)root@impulse:/home/bdmurray# apt-get install libglib2.0-0 Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: libboost-date-time1.54.0 libboost-system1.54.0 libcdr-0.0-0 libcmis-0.4-4 libelfg0 libevdev2 libgnome-desktop-3-12 libinput-bin libinput10 libmspub-0.0-0 liborcus-0.6-0 librhythmbox-core8 libvisio-0.0-0 libwpd-0.9-9 libwpg-0.2-2 libwps-0.2-2 overlay-scrollbar-gtk2 pidgin-data rhythmbox-mozilla xfonts-mathml Use 'apt-get autoremove' to remove them. The following extra packages will be installed: adwaita-icon-theme apt apt-utils console-setup console-setup-linux cups cups-bsd cups-client cups-common cups-core-drivers cups-daemon cups-server-common dbus dpkg fontconfig fontconfig-config fonts-stix gcc-5-base gir1.2-javascriptcoregtk-4.0 gir1.2-rb-3.0 gir1.2-webkit2-4.0 ... Then in /var/log/apt/term.log we can see: ... Setting up dpkg (1.18.4ubuntu1.4) ...^M$ Installing new version of config file /etc/cron.daily/dpkg ...^M$ (Reading database ... ^M(Reading database ... 5%^M(Reading database ... 10%^M(Reading database ... 15%^M(Reading database ... 20%^M(Reading database ... 25%^M(Re ading database ... 30%^M(Reading database ... 35%^M(Reading database ... 40%^M(Reading database ... 45%^M(Reading database ... 50%^M(Reading database ... 55%^M(R eading database ... 60%^M(Reading database ... 65%^M(Reading database ... 70%^M(Reading database ... 75%^M(Reading database ... 80%^M(Reading database ... 85%^M( Reading database ... 90%^M(Reading database ... 95%^M(Reading database ... 100%^M(Reading database ... 132743 files and directories currently installed.)^M$ Preparing to unpack .../libglib2.0-0_2.48.2-0ubuntu4_amd64.deb ...^M$ Unpacking libglib2.0-0:amd64 (2.48.2-0ubuntu4) over (2.40.2-0ubuntu1) ...^M$ ... ** Tags removed: verification-needed verification-needed-xenial ** Tags added: verification-done verification-done-xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1784065 Title: upgrade from 14.04 to 16.04 fails due to `interest-await' in trigger To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glib2.0/+bug/1784065/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs