Traceback when saving change to user in admin

[hmpf]

I attempted to give a user admin-access in the admin. On save I got a traceback complaining about DestinationConfigForm.

Environment:

Request Method: POST
Request URL: https://SOMECENSORED.DOMAIN/admin/argus_auth/user/65/change/

Django Version: 4.2.11
Python Version: 3.10.14
Installed Applications:
['channels',
 'django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'corsheaders',
 'social_django',
 'rest_framework',
 'rest_framework.authtoken',
 'drf_spectacular',
 'django_filters',
 'phonenumber_field',
 'argus.auth',
 'argus.incident',
 'argus.ws',
 'argus.notificationprofile',
 'argus.dev']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'corsheaders.middleware.CorsMiddleware',
 'whitenoise.middleware.WhiteNoiseMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'social_django.middleware.SocialAuthExceptionMiddleware',
 'django.contrib.auth.middleware.RemoteUserMiddleware']

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/django/core/handlers/exception.py", line 55, in inner
    response = get_response(request)
  File "/usr/local/lib/python3.10/site-packages/django/core/handlers/base.py", line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/local/lib/python3.10/site-packages/django/contrib/admin/options.py", line 688, in wrapper
    return self.admin_site.admin_view(view)(*args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/django/utils/decorators.py", line 134, in _wrapper_view
    response = view_func(request, *args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/django/views/decorators/cache.py", line 62, in _wrapper_view_func
    response = view_func(request, *args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/django/contrib/admin/sites.py", line 242, in inner
    return view(request, *args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/django/contrib/admin/options.py", line 1889, in change_view
    return self.changeform_view(request, object_id, form_url, extra_context)
  File "/usr/local/lib/python3.10/site-packages/django/utils/decorators.py", line 46, in _wrapper
    return bound_method(*args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/django/utils/decorators.py", line 134, in _wrapper_view
    response = view_func(request, *args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/django/contrib/admin/options.py", line 1747, in changeform_view
    return self._changeform_view(request, object_id, form_url, extra_context)
  File "/usr/local/lib/python3.10/site-packages/django/contrib/admin/options.py", line 1797, in _changeform_view
    if all_valid(formsets) and form_validated:
  File "/usr/local/lib/python3.10/site-packages/django/forms/formsets.py", line 579, in all_valid
    return all([formset.is_valid() for formset in formsets])
  File "/usr/local/lib/python3.10/site-packages/django/forms/formsets.py", line 579, in <listcomp>
    return all([formset.is_valid() for formset in formsets])
  File "/usr/local/lib/python3.10/site-packages/django/forms/formsets.py", line 384, in is_valid
    self.errors
  File "/usr/local/lib/python3.10/site-packages/django/forms/formsets.py", line 366, in errors
    self.full_clean()
  File "/usr/local/lib/python3.10/site-packages/django/forms/formsets.py", line 456, in full_clean
    self.clean()
  File "/usr/local/lib/python3.10/site-packages/django/forms/models.py", line 789, in clean
    self.validate_unique()
  File "/usr/local/lib/python3.10/site-packages/django/forms/models.py", line 831, in validate_unique
    if row_data in seen_data:

Exception Type: TypeError at /admin/argus_auth/user/65/change/
Exception Value: unhashable type: 'dict'

row_data was ('user', {'email_address': 'CENSORED@SOMCENSORED.DOMAIN', 'synced': True})

seen_data was set().

[hmpf]

See also https://code.djangoproject.com/ticket/35488