Could not import command module testrepository.commands.slowest when ‘testr slowest’

[Shuo Liu]

py27 run-test-pre: PYTHONHASHSEED='3666480225'
py27 run-test: commands[0] | find keystone -type f -name '*.pyc' -delete
py27 run-test: commands[1] | bash tools/pretty_tox.sh ''
: invalid option nameline 2: set: pipefail
usage: subunit-trace [-h] [--version] [--no-failure-debug] [--fails]
                     [--failonly] [--abbreviate] [--perc-diff]
                     [--diff-threshold THRESHOLD] [--no-summary] [--color]
subunit-trace: error: argument --fails/-f: ignored explicit argument '\r'
/opt/keystone/.tox/py27/lib/python2.7/site-packages/setuptools/dist.py:45: DistDeprecationWarning: Do not call this function
  warnings.warn("Do not call this function", DistDeprecationWarning)
error: Broken pipe

Slowest Tests:

Traceback (most recent call last):
  File "/opt/keystone/.tox/py27/bin/testr", line 26, in <module>
    sys.exit(run_argv(sys.argv, sys.stdin, sys.stdout, sys.stderr))
  File "/opt/keystone/.tox/py27/lib/python2.7/site-packages/testrepository/commands/__init__.py", line 184, in run_argv
    cmdclass = _find_command(cmd_name)
  File "/opt/keystone/.tox/py27/lib/python2.7/site-packages/testrepository/commands/__init__.py", line 53, in _find_command
    raise KeyError("Could not import command module %s" % modname)
KeyError: 'Could not import command module testrepository.commands.slowest\r'
: numeric argument required0: exit: 2
ERROR: InvocationError for command /usr/bin/bash tools/pretty_tox.sh '' (exited with code 255)
___________________________________________________________________________ summary ___________________________________________________________________________
ERROR: py27: commands failed