package autofs 5.1.1-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Andy Whitcroft]

When upgrading autofs4 I get a package install failure from the following:

[50044.886916] automount[4815]: segfault at 0 ip 00007f89dbbac1bb sp 00007ffc8f84a1a0 error 4 in lookup_file.so[7f89dbb9a000+2b000]

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: autofs 5.1.1-1ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8
Uname: Linux 3.19.0-20-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.17.3-0ubuntu4
AptOrdering:
 autofs: Install
 autofs: Configure
 NULL: ConfigurePending
Architecture: amd64
Date: Tue Jul 7 09:39:20 2015
DuplicateSignature: package:autofs:5.1.1-1ubuntu1:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2013-06-20 (746 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130618)
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.10ubuntu1
SourcePackage: autofs
Title: package autofs 5.1.1-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to wily on 2013-11-10 (603 days ago)