id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
27898	Inheriting from AbstractBaseUser does not interpolate unique error message on field	unho	nobody	If a custom `User` model inherits from `AbstractBaseUser` instead of `AbstractUser` and it defines a unique field the uniqueness error message used is not correctly interpolated and is rendered as is: %(model_name)s with this %(field_label)s already exists.	Bug	closed	contrib.auth	1.10	Normal	needsinfo			Unreviewed	0	0	0	0	0	0