Thank you for your report and helping to make Ubuntu better.
The relevant code that failed is here:
https://git.launchpad.net/ubuntu/+source/screen/tree/debian/screen.preinst?h=ubuntu
/bionic-devel
As far as I can tell, this would only happen if /run/screen/ didn't
exist prior to your release upgrade attempt. This shouldn't be the case,
and I cannot reproduce it in Xenial. Usually this directory is created
through /usr/lib/tmpfiles.d/screen-cleanup.conf (/var/run symlinks to
/run).
I also see the following errors in your logs:
[ 1226.031610] systemd[1]: systemd-timesyncd.service: Cannot add dependency
job, ignoring: Unit systemd-timesyncd.service is not loaded properly: Invalid
argument.
[...]
[ 1227.088532] systemd[1]: Failed to connect to system bus: No such file or
directory
[ 1227.088618] systemd[1]: Failed to initialize D-Bus connection: No such file
or directory
Is it possible that your system was broken in some way before you
attempted an upgrade, causing tmpfiles.d to not run and therefore have
no /run/screen created?
Unfortunately I don't think we'll be able to make any progress in
finding out whether this is a bug somewhere or was some kind of local
problem on your system without steps to reproduce the problem. If you
manage to find steps to reproduce the problem, please post them and then
change the bug status back to New.
** Changed in: screen (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1793957
Title:
package screen 4.3.1-2build1 failed to install/upgrade: new screen
package pre-installation script subprocess returned error exit status
1
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