package python-psycopg2 2.6.1-1build2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

strange

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: python-psycopg2 2.6.1-1build2
ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30
Uname: Linux 4.4.0-53-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.2
Architecture: amd64
Date: Thu Dec 15 07:24:36 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-11-18 (26 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.15ubuntu0.2
SourcePackage: psycopg2
Title: package python-psycopg2 2.6.1-1build2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)