TST: Tests failed with Numpy DeprecationWarning about np.broadcast_arrays #8935
Description
Example log from master from the numpy-dev job: https://api.travis-ci.org/v3/job/552167685/log.txt
DeprecationWarning: Numpy has detected that you (may be) writing to an array with
overlapping memory from np.broadcast_arrays. If this is intentional
set the WRITEABLE flag True or make a copy immediately before writing.
215 failures total
xref numpy/numpy#12609