The good news is the problem is reproducible.
The bad news is APT::Periodic::Verbose "1" doesn't make unattended-
upgrade produce any more output in its failure email:
Unattended upgrade returned: False
Packages that attempted to upgrade:
dh-apparmor libapparmor1 python3-update-manager update-manager-core
Package installation log:
Error in function:
Unattended-upgrades log:
Initial blacklisted packages:
Starting unattended upgrades script
Allowed origins are: ['o=Ubuntu,a=trusty-security', 'o=UbuntuESM,a=trusty',
'o=Ubuntu,a=trusty-security', 'o=Ubuntu,a=trusty-updates',
'origin=LP-PPA-pov,suite=trusty']
Packages that will be upgraded: dh-apparmor libapparmor1
python3-update-manager update-manager-core
Writing dpkg log to
'/var/log/unattended-upgrades/unattended-upgrades-dpkg_2018-02-13_03:07:51.796037.log'
Installing the upgrades failed!
error message: 'installArchives() failed'
dpkg returned a error! See
'/var/log/unattended-upgrades/unattended-upgrades-dpkg_2018-02-13_03:07:51.796037.log'
for details
Packages that are auto removed: ''
Packages auto-removed
Which is exactly the same thing I saw yesterday. I think I see my
mistake: I should've set APT::Periodic::Verbose to "3" to have the cron
script pass -d to unattended-upgrade! D'oh!
On the other hand I got an extra email from cron.daily saying
/etc/cron.daily/apt:
verbose level 1
sleeping for 280 seconds
check_stamp: interval=86400, now=1518559200, stamp=1518472800, delta=86400
(sec)
apt-key net-update (failure)
download updated metadata (success).
send dbus signal (success)
check_stamp: interval=0
download upgradable (not run)
check_stamp: interval=86400, now=1518559200, stamp=1518472800, delta=86400
(sec)
unattended-upgrade (success)
check_stamp: interval=0
autoclean (not run)
aged: ctime <30 and mtime <30 and ctime>2 and mtime>2
end remove by archive size: size=24256 < 512000
The "apt-key net-update (failure)" line is intriguing, but seems to be
unrelated.
I've bumped APT::Periodic::Verbose to "3" now and will see what happens
next morning.
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https://bugs.launchpad.net/bugs/1721294
Title:
Unattended upgrade fails with "Error in function"
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