package p7zip-rar (not installed) failed to install/upgrade: unable to clean up mess surrounding './usr/share/doc/p7zip-rar' before installing another version: Read-only file system

[Martinus Lukas]

I cant install p7zip-rar and many other p7zip package.

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: p7zip-rar (not installed)
ProcVersionSignature: Ubuntu 4.2.0-30.36-generic 4.2.8-ckt3
Uname: Linux 4.2.0-30-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Sun Mar 13 07:25:08 2016
DuplicateSignature: package:p7zip-rar:(not installed):unable to clean up mess surrounding './usr/share/doc/p7zip-rar' before installing another version: Read-only file system
ErrorMessage: unable to clean up mess surrounding './usr/share/doc/p7zip-rar' before installing another version: Read-only file system
InstallationDate: Installed on 2016-03-12 (0 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu1
SourcePackage: p7zip-rar
Title: package p7zip-rar (not installed) failed to install/upgrade: unable to clean up mess surrounding './usr/share/doc/p7zip-rar' before installing another version: Read-only file system
UpgradeStatus: No upgrade log present (probably fresh install)