Exception: unsupported operand type(s) for %: 'bytes' and 'tuple'

[Ralf Hildebrandt]

I'm getting cron mails containing errors:

Subject: Cron <root@www> test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
...
/etc/cron.daily/apt:
Exception: unsupported operand type(s) for %: 'bytes' and 'tuple'
Traceback (most recent call last):
  File "/usr/bin/unattended-upgrade", line 1435, in <module>
    main(options)
  File "/usr/bin/unattended-upgrade", line 1382, in main
    pkgs, pkg_install_success, pkgs_kept_back, mem_log, log_content)
  File "/usr/bin/unattended-upgrade", line 812, in send_summary_mail
    host(), res)
TypeError: unsupported operand type(s) for %: 'bytes' and 'tuple'
~

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: apt 1.0.10.2ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Wed Nov 25 14:08:48 2015
InstallationDate: Installed on 2011-02-22 (1736 days ago)
InstallationMedia: Ubuntu-Server 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: apt
UpgradeStatus: Upgraded to wily on 2015-10-22 (34 days ago)

[S. W. (cebit2006)]

+1

[S. W. (cebit2006)]

seems to be related to that upstream issue

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=793663

we have in wily:
unattended-upgrades/wily,now 0.86.2ubuntu1 all [installiert]

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.