OK, I dug into this a bit. I added the line
print("apt-listchanges arguments: ", str(sys.argv))
as the first line of main in apt-listchanges. Next time apticron was
called, it produced this:
---
apticron report [Tue, 27 Jun 2017 23:14:42 -0400]
========================================================================
apticron has detected that some packages need upgrading on:
morannon.ln.benshome.net
[ 172.17.113.244 ]
The following packages are currently pending an upgrade:
bsdutils 1:2.29-1ubuntu2.1
grub-legacy-ec2 0.7.9-153-g16a7302f-0ubuntu1~17.04.1
libblkid1 2.29-1ubuntu2.1
libfdisk1 2.29-1ubuntu2.1
libmount1 2.29-1ubuntu2.1
libnss-resolve 232-21ubuntu5
libpam-systemd 232-21ubuntu5
libsmartcols1 2.29-1ubuntu2.1
libsystemd0 232-21ubuntu5
libudev1 232-21ubuntu5
libuuid1 2.29-1ubuntu2.1
mount 2.29-1ubuntu2.1
nplan 0.23~17.04.1
systemd 232-21ubuntu5
systemd-sysv 232-21ubuntu5
udev 232-21ubuntu5
util-linux 2.29-1ubuntu2.1
uuid-runtime 2.29-1ubuntu2.1
========================================================================
Package Details:
Usage: apt-listchanges [options] {--apt | filename.deb ...}
apt-listchanges arguments: ['/usr/bin/apt-listchanges', '--which=both',
'--headers', '-f', 'text']
---
The problem appears to be that there are no .deb files provided (as all
of the other arguments look valid). The execution of apt-listchanges is
in line 225 of /usr/sbin/aptcron (on 17.10):
/usr/bin/apt-listchanges --which=both --headers -f text $DEBS
It would appear that $DEBS at this point is empty, rather than
containing pathnames for the .debs to be listed. This would seem to
point to a problem in lines 194 - 213, where DEBS is set.
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https://bugs.launchpad.net/bugs/1671922
Title:
apticron calls apt-listchanges with incorrect arguments
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