Traceback (most recent call last):

 "/home/travis/build/matthew-brett/manylinux-testing/venv/lib/python2.7/site-packages/pandas/tseries/tests/test_period.py", line 2660, in test_range_slice_seconds
idx[v:]

 "/home/travis/build/matthew-brett/manylinux-testing/venv/lib/python2.7/site-packages/pandas/tseries/base.py", line 175, in __getitem__
result = getitem(key)IndexError: failed to coerce slice entry of type str to integer
Traceback (most recent call last):

 "/usr/local/lib/python2.7/site-packages/beets/plugins.py", line 253, in load_plugins
namespace = __import__(modname, None, None)

 "/usr/local/lib/python2.7/site-packages/beetsplug/web/__init__.py", line 23, in <module>
import flaskImportError: No module named flask