package heirloom-mailx 12.5-2+deb7u1build0.14.04.1 failed to install/upgrade: package heirloom-mailx is not ready for configuration cannot configure (current status `half-installed')

Description: Ubuntu 14.04.3 LTS
Release: 14.04

heirloom-mailx:
  Installed: 12.5-2+deb7u1build0.14.04.1
  Candidate: 12.5-2+deb7u1build0.14.04.1
  Version table:
 *** 12.5-2+deb7u1build0.14.04.1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/universe i386 Packages
        500 http://security.ubuntu.com/ubuntu/ trusty-security/universe i386 Packages
        100 /var/lib/dpkg/status
     12.5-2 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe i386 Packages

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: heirloom-mailx 12.5-2+deb7u1build0.14.04.1
ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30
Uname: Linux 3.13.0-74-generic i686
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: i386
Date: Fri Jan 8 19:08:11 2016
DuplicateSignature: package:heirloom-mailx:12.5-2+deb7u1build0.14.04.1:package heirloom-mailx is not ready for configuration cannot configure (current status `half-installed')
ErrorMessage: package heirloom-mailx is not ready for configuration cannot configure (current status `half-installed')
InstallationDate: Installed on 2015-01-01 (372 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140722.2)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.10
SourcePackage: heirloom-mailx
Title: package heirloom-mailx 12.5-2+deb7u1build0.14.04.1 failed to install/upgrade: package heirloom-mailx is not ready for configuration cannot configure (current status `half-installed')
UpgradeStatus: No upgrade log present (probably fresh install)