block py.test 3.9.1

references:

pytest-dev/pytest#4181

Change-Id: Iad3b6845e94753c55771419ccd1f99852bc89159

Author: zzzeek

setup.py

@@ -66,7 +66,7 @@ def run_tests(self):
       license='MIT',
       packages=find_packages('.', exclude=['examples*', 'test*']),
       include_package_data=True,
-      tests_require=['pytest', 'mock', 'Mako'],
+      tests_require=['pytest!=3.9.1', 'mock', 'Mako'],
       cmdclass={'test': PyTest},
       zip_safe=False,
       install_requires=requires,

tox.ini

@@ -9,7 +9,7 @@ SQLA_REPO = {env:SQLA_REPO:git+https://[email protected]/zzzeek/sqlalchemy.gi
 [testenv]
 cov_args=--cov=alembic --cov-report term --cov-report xml
 
-deps=pytest
+deps=pytest!=3.9.1
      pytest-xdist
      mock
      sqla079: {[tox]SQLA_REPO}@rel_0_7_9