It's not really a bug with policykit-1, its just that the upgrader trips over this specific package.
** Package changed: policykit-1 (Ubuntu) => ubuntu-release-upgrader (Ubuntu) ** Changed in: ubuntu-release-upgrader (Ubuntu) Importance: Undecided => High ** Summary changed: - Upgrade from xenial to yakkety fails when install policykit-1 + Upgrade from xenial to yakkety fails due to a UnicodeDecodeError -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to policykit-1 in Ubuntu. https://bugs.launchpad.net/bugs/1614576 Title: Upgrade from xenial to yakkety fails due to a UnicodeDecodeError Status in ubuntu-release-upgrader package in Ubuntu: Triaged Bug description: When doing an automated upgrade from xenial to yakkey, I get: Preparing to unpack .../policykit-1_0.105-16_amd64.deb ... Created symlink /run/systemd/system/polkitd.service auto-upgrade [10:48:43]: ERROR: ERROR: Something went wrong with the upgrade. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: policykit-1 0.105-16 ProcVersionSignature: User Name 4.4.0-34.53-generic 4.4.15 Uname: Linux 4.4.0-34-generic x86_64 ApportVersion: 2.20.3-0ubuntu7 Architecture: amd64 Date: Thu Aug 18 11:02:06 2016 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: policykit-1 UpgradeStatus: Upgraded to yakkety on 2016-08-18 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1614576/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp