package upower 0.99.4-2ubuntu0.3 failed to install/upgrade: subprocess installed post-installation script was killed by signal (Terminated)

[Oleksandr Suvorov]

- run apt upgrade
- upower can't finish its postinstall script

It leads update-manager and dpkg to be stucked.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: upower 0.99.4-2ubuntu0.3
ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
Uname: Linux 4.4.0-28-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Tue Jul 19 13:26:12 2016
DuplicateSignature:
 package:upower:0.99.4-2ubuntu0.3
 Setting up upower (0.99.4-2ubuntu0.3) ...
 dpkg: error processing package upower (--configure):
  subprocess installed post-installation script was killed by signal (Terminated)
ErrorMessage: subprocess installed post-installation script was killed by signal (Terminated)
InstallationDate: Installed on 2015-12-20 (211 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: upower
Title: package upower 0.99.4-2ubuntu0.3 failed to install/upgrade: subprocess installed post-installation script was killed by signal (Terminated)
UpgradeStatus: Upgraded to xenial on 2016-04-22 (87 days ago)