Error running tests under pytest 3.4.0

[dpkp]

INTERNALERROR> AttributeError: 'NoneType' object has no attribute 'testscollected'
See pytest-dev/pytest#3174

Seems like we'll need to either drop pytest-sugar (until the issue is fixed) or pin pytest==3.3.2

[tvoinarovskyi]

Yea, aiokafka is broken too. Needs fixes =( Lets pin to older version.

[dpkp]

See also Teemu/pytest-sugar#133 and pytest-dev/pytest#3170