package install-info 6.0.0.dfsg.1-3 [origin: Ubuntu] failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[zyn]

can't be updated successfully

ProblemType: Package
DistroRelease: Ubuntu Kylin 15.04
Package: install-info
ProcVersionSignature: Ubuntu 4.1.0-3.3-generic 4.1.3
Uname: Linux 4.1.0-3-generic x86_64
ApportVersion: 2.18-0ubuntu6
Architecture: amd64
Date: Sat Aug 15 18:14:19 2015
DuplicateSignature: package:install-info:6.0.0.dfsg.1-3 [origin: Ubuntu]:subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
RelatedPackageVersions:
 dpkg 1.18.2ubuntu1
 apt 1.0.9.10ubuntu1
SourcePackage: texinfo
Title: package install-info 6.0.0.dfsg.1-3 [origin: Ubuntu] failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.