package g++-mingw-w64 4.8.2-10ubuntu2+12 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1

[raghav]

Trying to upgrade/update. getting this error

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: g++-mingw-w64 4.8.2-10ubuntu2+12
ProcVersionSignature: Ubuntu 3.16.0-76.98~14.04.1-generic 3.16.7-ckt27
Uname: Linux 3.16.0-76-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
Date: Sat Mar 18 22:25:45 2017
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-20140620-0
DuplicateSignature: package:g++-mingw-w64:4.8.2-10ubuntu2+12:subprocess new pre-installation script returned error exit status 1
ErrorMessage: subprocess new pre-installation script returned error exit status 1
InstallationDate: Installed on 2015-07-28 (599 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20140620-04:25
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.7
 apt 1.0.1ubuntu2.14
SourcePackage: gcc-mingw-w64
Title: package g++-mingw-w64 4.8.2-10ubuntu2+12 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: Upgraded to wily on 2017-02-24 (22 days ago)

[Stephen Kitt (steve-sk2)]

What does

    ls -ld /usr/share/doc/g*-mingw-w64*

output?