logilab-astng #69212 UnboundMethod.igetattr(self, name, context) throws TypeError: super() argument 1 must be type, not classobj [rejected]

My astng version is 0.20.1

Please see attached files for reproduction log and code used to reproduce the bug.
To reproduce, try running pylint on test_pylintRepr.py

priorityimportant
typebug
done in0.24.0
load0.000
load left0.000
closed by<not specified>