package apt 1.1.5 failed to install/upgrade: sub-processo script post-installation instalado retornou estado de saída de erro 6

[Gérson Soares Martins]

Não instala as atualizações.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: apt 1.1.5
ProcVersionSignature: Ubuntu 4.3.0-4.13-generic 4.3.2
Uname: Linux 4.3.0-4-generic i686
ApportVersion: 2.19.3-0ubuntu2
Architecture: i386
Date: Mon Dec 14 23:02:24 2015
ErrorMessage: sub-processo script post-installation instalado retornou estado de saída de erro 6
InstallationDate: Installed on 2011-04-28 (1691 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
RelatedPackageVersions:
 dpkg 1.18.3ubuntu1
 apt 1.1.5
SourcePackage: apt
Title: package apt 1.1.5 failed to install/upgrade: sub-processo script post-installation instalado retornou estado de saída de erro 6
UpgradeStatus: No upgrade log present (probably fresh install)

[Julian Andres Klode (juliank)]

> useradd: existing lock file /etc/gshadow.lock without a PID

Not sure why there is an existing lock file, but it's clearly not apt's fault - we just do the same as every other package adding a user.