Fix with pylint 2.6

.pylintrc

@@ -52,6 +52,7 @@ limit-inference-results=1
 # Pylint 2.4 adds import-outside-toplevel. But we do that a lot to defer imports because of patching.
 # Pylint 2.4 adds self-assigning-variable. But we do *that* to avoid unused-import when we
 # "export" the variable and don't have a __all__.
+# Pylint 2.6 adds some python-3-only things that don't apply
 disable=wrong-import-position,
     wrong-import-order,
     missing-docstring,
@@ -74,8 +75,9 @@ disable=wrong-import-position,
     useless-return,
     useless-object-inheritance,
     import-outside-toplevel,
-    self-assigning-variable
-
+    self-assigning-variable,
+    raise-missing-from,
+    super-with-arguments
 
 [FORMAT]
 # duplicated from setup.cfg