Created attachment 1560498 [details]
Full log from Copr

python-pynacl-1.3.0-2.fc31:

+ py.test-2 -v
============================= test session starts ==============================
platform linux2 -- Python 2.7.16, pytest-4.4.1, py-1.8.0, pluggy-0.9.0 -- /usr/bin/python2
cachedir: .pytest_cache
hypothesis profile 'default' -> database=DirectoryBasedExampleDatabase('/builddir/build/BUILD/pynacl-1.3.0/.hypothesis/examples')
rootdir: /builddir/build/BUILD/pynacl-1.3.0
plugins: hypothesis-4.9.0
collecting ... collected 4582 items / 2 errors / 4580 selected

==================================== ERRORS ====================================
___________________ ERROR collecting tests/test_bindings.py ____________________
tests/test_bindings.py:310: in <module>
    max_size=2049),
E   TypeError: binary() got an unexpected keyword argument 'average_size'
______________________ ERROR collecting tests/test_box.py ______________________
tests/test_box.py:21: in <module>
    from test_bindings import _box_from_seed_vectors
/usr/lib/python2.7/site-packages/_pytest/assertion/rewrite.py:299: in load_module
    six.exec_(co, mod.__dict__)
/usr/lib/python2.7/site-packages/six.py:709: in exec_
    exec("""exec _code_ in _globs_, _locs_""")
<string>:1: in <module>
    ???
tests/test_bindings.py:310: in <module>
    max_size=2049),
E   TypeError: binary() got an unexpected keyword argument 'average_size'
=============================== warnings summary ===============================
/usr/lib/python2.7/site-packages/hypothesis/_settings.py:193
  /usr/lib/python2.7/site-packages/hypothesis/_settings.py:193: HypothesisDeprecationWarning: The timeout setting can safely be removed with no effect.
    verbosity=self.verbosity,

-- Docs: https://docs.pytest.org/en/latest/warnings.html
!!!!!!!!!!!!!!!!!!! Interrupted: 2 errors during collection !!!!!!!!!!!!!!!!!!!!
===================== 1 warnings, 2 error in 4.75 seconds ======================

This blocks the Python 3.8 rebuild.

Full log attached.