python-dbusmock: FAIL: test_one_adapter (__main__.TestBlueZ5)

When bluez 5.48 is installed, we see this failure:

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FAIL: test_one_adapter (__main__.TestBlueZ5)
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Traceback (most recent call last):
  File "test_bluez5.py", line 128, in test_one_adapter
    self.assertIn('Controller ' + address, out)
AssertionError: 'Controller 00:01:02:03:04:05' not found in ['Waiting to connect to bluetoothd...', '[\x1b[0;92mNEW\x1b[0m] Controller 00:01:02:03:04:05 my-computer [default]', '[SIGNAL] org.freedesktop.DBus.Mock.MethodCalled', 'Agent registered', 'Controller 00:01:02:03:04:05 my-computer [default]', 'Agent unregistered', '[\x1b[0;91mDEL\x1b[0m] Controller 00:01:02:03:04:05 my-computer [default]']

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However the failure only occurs in the Ubuntu package of python-dbusmock. It does not occur with the upstream git repo (run as 'tests/run-ubuntu-chroot').

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: python-dbusmock 0.17-1
ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
Date: Mon Feb 19 11:42:48 2018
InstallationDate: Installed on 2017-12-12 (68 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20171211)
PackageArchitecture: all
SourcePackage: python-dbusmock
UpgradeStatus: No upgrade log present (probably fresh install)