I think that the problem somehow involves perl being upgraded from 5.22.1 to 5.26 but 5.22.1 still being used when the trigger for doc-base is invoked.
>From the dpkg terminal log: <snip> Preparing to unpack .../perl_5.26.1-6ubuntu0.3_amd64.deb ... Unpacking perl (5.26.1-6ubuntu0.3) over (5.22.1-9ubuntu0.6) ... Selecting previously unselected package perl-modules-5.26. Preparing to unpack .../perl-modules-5.26_5.26.1-6ubuntu0.3_all.deb ... Unpacking perl-modules-5.26 (5.26.1-6ubuntu0.3) ... <snip> Processing triggers for doc-base (0.10.7) ... Database error: Cannot read file `/var/lib/doc-base/info/status.yml': Can't locate PerlIO.pm in @INC (you may need to install the PerlIO module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.22.1 /usr/local/share/perl/5.22.1 /usr/lib/x86_64-linux-gnu/perl5/5.22 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.22 /usr/share/perl/5.22 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base .) at /usr/share/perl5/YAML/Tiny.pm line 183. BEGIN failed--compilation aborted. <snip> Note that despite the fact that perl 5.22.1 has been replaced with perl 5.26, @INC still contains /usr/share/perl/5.22.1/ . I have made a pre-upgrade btrfs snapshot. I plan to revert to it then uninstall doc-base and re-run the upgrade, then re-install doc-base. I plan to keep the snapshot if any developer would like me to test upgrade again with a fixed package. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to doc-base in Ubuntu. https://bugs.launchpad.net/bugs/1869410 Title: package doc-base 0.10.7 failed to install/upgrade: installed doc-base package post-installation script subprocess returned error exit status 10 Status in doc-base package in Ubuntu: New Bug description: I received this error while doing a do-release-upgrade from Ubuntu 16.04 to Ubuntu 18.04. ProblemType: Package DistroRelease: Ubuntu 18.04 Package: doc-base 0.10.7 ProcVersionSignature: Ubuntu 4.4.0-176.206-generic 4.4.211 Uname: Linux 4.4.0-176-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.20.1-0ubuntu2.22 Architecture: amd64 Date: Fri Mar 27 11:12:04 2020 ErrorMessage: installed doc-base package post-installation script subprocess returned error exit status 10 InstallationDate: Installed on 2015-12-16 (1563 days ago) InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021) PackageArchitecture: all RelatedPackageVersions: dpkg 1.19.0.5ubuntu2.3 apt 1.2.32 SourcePackage: doc-base Title: package doc-base 0.10.7 failed to install/upgrade: installed doc-base package post-installation script subprocess returned error exit status 10 UpgradeStatus: Upgraded to bionic on 2020-03-27 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/doc-base/+bug/1869410/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
