Authentication Backend Supresses Some Exceptions

[David Cramer]

When using custom backends we noticed that sometimes errors are supressed. One such error was an invalid arguments error for .create() on the default manager.

# throws an exception because it should be a dictionary, instead of a list.
User.objects.create(*args)

The error above is supressed, and simply returns a failure on authenticate(), which can be a headache to debug.

[Aymeric Augustin]

Change UI/UX from NULL to False.

[Aymeric Augustin]

Change Easy pickings from NULL to False.

[Sasha Romijn]

Based on the report, I can't really work out what the problem is. Considering the age and lack of activity on this ticket, I am closing it with needsinfo.
Feel free to reopen it if you can provide additional detail, like a more extensive example of the improper behaviour.