glances fails to build with Python 3.9.0a2.

FAIL: test_000_update (__main__.TestGlances)
Update stats (mandatory step for all the stats).
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/build/BUILD/glances-3.1.0/unitest.py", line 75, in test_000_update
    stats.update()
AttributeError: 'ThreadScanner' object has no attribute 'isAlive'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/builddir/build/BUILD/glances-3.1.0/unitest.py", line 78, in test_000_update
    self.assertTrue(False)
AssertionError: False is not true

----------------------------------------------------------------------
Ran 25 tests in 1.079s

FAILED (failures=1)



See https://docs.python.org/3.9/whatsnew/3.9.html#removed

"The isAlive() method of threading.Thread has been removed. It was deprecated since Python 3.8. Use is_alive() instead."

For the build logs, see:
https://copr-be.cloud.fedoraproject.org/results/@python/python3.9/fedora-rawhide-x86_64/01145259-glances/

For all our attempts to build glances with Python 3.9, see:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/package/glances/

Testing and mass rebuild of packages is happening in copr. You can follow these instructions to test locally in mock if your package builds with Python 3.9:
https://copr.fedorainfracloud.org/coprs/g/python/python3.9/

Let us know here if you have any questions.

Python 3.9 will be included in Fedora 33. To make that update smoother, we're building Fedora packages with early pre-releases of Python 3.9.
A build failure prevents us from testing all dependent packages (transitive [Build]Requires), so it's important for us to get it fixed soon.
We'd appreciate help from the people who know this package best, but if you don't want to work on this now, let us know so we can try to work around it on our side.