[Pkg-systemd-maintainers] Bug#742322: also affects me

[Andreas Cadhalpun]

Control: reopen -1
Control: tags -1 - unreproducible moreinfo
Control: severity -1 critical
Justification: breaks many packages, even shutdown/reboot

Dear systemd maintainers,

I'm also hitting this bug. I upgraded systemd to 204-8 yesterday and now 
upgrading cups-daemon to 1.7.1-10 failed, apparently crashing systemd.
I don't know if cups-daemon is broken somehow (see #742668 for a report 
of this bug against cups), but it should not be able to crash systemd.

I still have the system running, so I can supply more information, but I 
couldn't find here, what information you need. Thus I can just give some 
general information.
The relevant part from the journal seems to be:
systemd[1]: Stopping CUPS Printer Service Spool.
systemd[1]: Stopped CUPS Printer Service Spool.
systemd[1]: Reloading.
systemd[1]: Stopping CUPS Printing Service...
systemd[1]: Stopped CUPS Printing Service.
colord[2239]: Automatic remove of LaserJet-CM1415fn-Gray.. from 
cups-LaserJet-CM1415fn
colord[2239]: Profile removed: LaserJet-CM1415fn-Gray..
colord[2239]: Automatic remove of LaserJet-CM1415fn-RGB.. from 
cups-LaserJet-CM1415fn
colord[2239]: Profile removed: LaserJet-CM1415fn-RGB..
colord[2239]: device removed: cups-LaserJet-CM1415fn
colord[2239]: Automatic remove of Officejet_6500_E710n-z-Gray.. from 
cups-Officejet_6500_E710n-z
colord[2239]: Profile removed: Officejet_6500_E710n-z-Gray..
colord[2239]: Automatic remove of Officejet_6500_E710n-z-RGB.. from 
cups-Officejet_6500_E710n-z
colord[2239]: Profile removed: Officejet_6500_E710n-z-RGB..
colord[2239]: device removed: cups-Officejet_6500_E710n-z
systemd[1]: Reloading.
systemd[1]: Failed to open configuration file 
'/etc/systemd/system/cups.socket.d/cupsd-listen.conf': No such file or 
directory
systemd[1]: Reloading.
systemd[1]: Failed to open configuration file 
'/etc/systemd/system/cups.socket.d/cupsd-listen.conf': No such file or 
directory
org.gtk.Private.GPhoto2VolumeMonitor[2521]: ### debug: Name owner 
':1.156' vanished
org.gtk.Private.MTPVolumeMonitor[2521]: ### debug: Name owner ':1.156' 
vanished
org.gtk.Private.GoaVolumeMonitor[2521]: ### debug: Name owner ':1.156' 
vanished
org.gtk.Private.UDisks2VolumeMonitor[2521]: ### debug: Name owner 
':1.156' vanished
org.gtk.Private.AfcVolumeMonitor[2521]: ### debug: Name owner ':1.156' 
vanished
systemd[1]: Assertion 'unit' failed at ../src/core/manager.c:882, 
function manager_add_job(). Aborting.
systemd[1]: Caught <ABRT>, dumped core as pid 8502.
systemd[1]: Freezing execution.

'Freezing execution' sounds as bad as crashing.

Note that the configuration file exists, but is a link:
$ file /etc/systemd/system/cups.socket.d/cupsd-listen.conf
/etc/systemd/system/cups.socket.d/cupsd-listen.conf: symbolic link to 
`../../../cups/cupsd-systemd-listen.conf'
$ file /etc/cups/cupsd-systemd-listen.conf
/etc/cups/cupsd-systemd-listen.conf: ASCII text

If you need further information, please let me know soon, as I'm going 
to forcefully reboot this machine sooner or later.

Best regards,
Andreas