Package: systemd
Version: 258~rc2-2
Severity: critical

Control: forwarded -1 https://github.com/systemd/systemd/issues/38563

Breaks unrelated software.

/var/lock/ is not just the dumping ground for lock files of random 
applications, but also the published interface for system-wide locks of 
serial devices.

From section 5.9.1 of the FHS:

   Lock files should be stored within the /var/lock directory
   structure.

   Lock files for devices and other resources shared by multiple
   applications, such as the serial device lock files that were
   originally found in either /usr/spool/locks or /usr/spool/uucp,
   must now be stored in /var/lock. The naming convention which
   must be used is "LCK.." followed by the base name of the
   device. For example, to lock /dev/ttyS0 the file "LCK..ttyS0"
   would be created. ^[43]

I think that this can be easily solved by making /run/lock/ owned by 
group dialout.

-- 
ciao,
Marco

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