package sudo 1.8.9p5-1ubuntu1.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 9

crashes while updating

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: sudo 1.8.9p5-1ubuntu1.1
ProcVersionSignature: Ubuntu 3.13.0-46.76-generic 3.13.11-ckt15
Uname: Linux 3.13.0-46-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: amd64
Date: Sat Apr 4 02:17:50 2015
DuplicateSignature: package:sudo:1.8.9p5-1ubuntu1.1:subprocess installed post-installation script returned error exit status 9
ErrorMessage: subprocess installed post-installation script returned error exit status 9
InstallationDate: Installed on 2015-02-10 (52 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64+mac (20140417)
SourcePackage: sudo
Title: package sudo 1.8.9p5-1ubuntu1.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 9
UpgradeStatus: No upgrade log present (probably fresh install)
VisudoCheck:
 /etc/sudoers: parsed OK
 /etc/sudoers.d/README: parsed OK