Python 3.5.1 and Pytest 5.1.0 fails to start running tests with the error RuntimeError: Overloading is only supported in library stubs

[smtakeda]

• a detailed description of the bug or suggestion
• output of pip list from the virtual environment you are using
• pytest and operating system versions
• minimal example if possible

Running pytest 5.1.0 fails to start in importing main. 5.0.1 and older version works fine.

>py.test -s -vvv test
Traceback (most recent call last):
  File "/tmp/ocsp/bin/py.test", line 6, in <module>
    from pytest import main
  File "/tmp/ocsp/lib64/python3.5/site-packages/pytest.py", line 34, in <module>
    from _pytest.python_api import approx
  File "/tmp/ocsp/lib64/python3.5/site-packages/_pytest/python_api.py", line 551, in <module>
    ) -> "RaisesContext[_E]":
  File "/opt/rh/rh-python35/root/usr/lib64/python3.5/typing.py", line 1184, in overload
    raise RuntimeError("Overloading is only supported in library stubs")
RuntimeError: Overloading is only supported in library stubs

pip list

>pip list
Package                    Version     
-------------------------- ------------
asn1crypto                 0.24.0      
atomicwrites               1.3.0       
attrs                      19.1.0      
azure-common               1.1.23      
azure-storage-blob         2.1.0       
azure-storage-common       2.1.0       
boto3                      1.9.210     
botocore                   1.12.210    
certifi                    2019.6.16   
cffi                       1.12.3      
chardet                    3.0.4       
cryptography               2.7         
docutils                   0.15.2      
future                     0.17.1      
idna                       2.8         
ijson                      2.4         
importlib-metadata         0.19        
jmespath                   0.9.4       
more-itertools             7.2.0       
packaging                  19.1        
pathlib2                   2.3.4       
pip                        19.2.2      
pluggy                     0.12.0      
py                         1.8.0       
pycparser                  2.19        
pycryptodomex              3.8.2       
PyJWT                      1.7.1       
pyOpenSSL                  19.0.0      
pyparsing                  2.4.2       
pytest                     5.1.0       
python-dateutil            2.8.0       
pytz                       2019.2      
requests                   2.22.0      
s3transfer                 0.2.1       
setuptools                 41.1.0      
six                        1.12.0      
snowflake-connector-python 1.8.7.150951
urllib3                    1.25.3      
wcwidth                    0.1.7       
zipp                       0.5.2       

My environment:

>more /etc/redhat-release 
CentOS release 6.7 (Final)
>python3.5
Python 3.5.1 (default, Oct 22 2016, 08:10:47) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux

[bluetech]

This is a duplicate of #5751, will be fixed in the next pytest release.