======================================================================
ERROR: test_bridge_configure_without_carrier (__main__.NetworkdBridgeTests) (test='no-slave')
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Traceback (most recent call last):
  File "./test/test-network/systemd-networkd-tests.py", line 2800, in test_bridge_configure_without_carrier
    self.wait_online(['bridge99:no-carrier'])
  File "./test/test-network/systemd-networkd-tests.py", line 506, in wait_online
    check_output(*args, env=env)
  File "./test/test-network/systemd-networkd-tests.py", line 49, in check_output
    return subprocess.check_output(command, universal_newlines=True, **kwargs).rstrip()
  File "/usr/lib/python3.8/subprocess.py", line 411, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/usr/lib/python3.8/subprocess.py", line 512, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['/usr/lib/systemd/systemd-networkd-wait-online', '--timeout=20s', '--interface=bridge99:no-carrier']' returned non-zero exit status 1.

======================================================================
ERROR: test_bridge_configure_without_carrier (__main__.NetworkdBridgeTests) (test='add-slave')
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Traceback (most recent call last):
  File "./test/test-network/systemd-networkd-tests.py", line 2811, in test_bridge_configure_without_carrier
    self.wait_online(['bridge99:no-carrier:no-carrier'])
  File "./test/test-network/systemd-networkd-tests.py", line 506, in wait_online
    check_output(*args, env=env)
  File "./test/test-network/systemd-networkd-tests.py", line 49, in check_output
    return subprocess.check_output(command, universal_newlines=True, **kwargs).rstrip()
  File "/usr/lib/python3.8/subprocess.py", line 411, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/usr/lib/python3.8/subprocess.py", line 512, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['/usr/lib/systemd/systemd-networkd-wait-online', '--timeout=20s', '--interface=bridge99:no-carrier:no-carrier']' returned non-zero exit status 1.

----------------------------------------------------------------------
Ran 138 tests in 2722.085s

FAILED (errors=2, expected failures=1)