sleep_test crashed with TypeError in MarkLog(): 'module' object is not callable

[Logan]

The suspend/sleep test (part of sniff test) in System Testing, crashes.

ProblemType: Crash
DistroRelease: Ubuntu 15.10
Package: plainbox-provider-checkbox 0.21.3-1
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
ApportVersion: 2.19.1-0ubuntu2
Architecture: amd64
Date: Thu Oct 15 19:00:10 2015
ExecutablePath: /usr/lib/plainbox-provider-checkbox/bin/sleep_test
InstallationDate: Installed on 2015-10-15 (0 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150924)
InterpreterPath: /usr/bin/python3.4
ProcCmdline: /usr/bin/python3 /tmp/nest-k0hnxdcg.f609d7f73495c5765ab486ced9a6786fa9064bf7b335b26a28b394e48eb6963b/sleep_test -p
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=C.UTF-8
 LANGUAGE=en_AU:en
PythonArgs: ['/tmp/nest-k0hnxdcg.f609d7f73495c5765ab486ced9a6786fa9064bf7b335b26a28b394e48eb6963b/sleep_test', '-p']
SourcePackage: plainbox-provider-checkbox
Title: sleep_test crashed with TypeError in MarkLog(): 'module' object is not callable
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Sylvain Pineau (sylvain-pineau)]

Fixed for xenial: https://code.launchpad.net/~kissiel/checkbox/suspends-reboots-job/+merge/267013