Bug#806265: Re-sending an account verification link on an already-activated causes a 500 error

Package: wiki.debian.org
Severity: normal

As reported:

when I try to create a user account on the Debian wiki which uses a
name already taken, I get the following message:

This user name already belongs to somebody else. If this is a new
account and you need another verification link, try sending another
one.

"sending another one" links to
https://wiki.debian.org/InstallingDebianOn/Allwinner?action=newaccount&i=1162379783.5.60584&resend=1
in my case. Going to this page results in an internal server error.

I've confirmed this and I can see the problem in the apache logs:

 [wsgi:error] mod_wsgi (pid=19132): Exception occurred processing WSGI script '/srv/wiki.debian.org/bin/moin.wsgi'.
 [wsgi:error]  Traceback (most recent call last):
 [wsgi:error]    File "/usr/lib/python2.7/dist-packages/werkzeug/wsgi.py", line 588, in __call__
 [wsgi:error]      return self.app(environ, start_response)
 [wsgi:error]    File "/usr/lib/python2.7/dist-packages/MoinMoin/wsgiapp.py", line 264, in __call__
 [wsgi:error]      response = run(context)
 [wsgi:error]    File "/usr/lib/python2.7/dist-packages/MoinMoin/wsgiapp.py", line 89, in run
 [wsgi:error]      response = dispatch(request, context, action_name)
 [wsgi:error]    File "/usr/lib/python2.7/dist-packages/MoinMoin/wsgiapp.py", line 137, in dispatch
 [wsgi:error]      response = handle_action(context, pagename, action_name)
 [wsgi:error]    File "/usr/lib/python2.7/dist-packages/MoinMoin/wsgiapp.py", line 203, in handle_action
 [wsgi:error]      handler(context.page.page_name, context)
 [wsgi:error]    File "/usr/lib/python2.7/dist-packages/MoinMoin/action/newaccount.py", line 259, in execute
 [wsgi:error]      mailok, msg = _send_verification_mail(request, theuser)
 [wsgi:error]    File "/usr/lib/python2.7/dist-packages/MoinMoin/action/newaccount.py", line 22, in _send_verification_mail
 [wsgi:error]      'v': user.account_verification}
 [wsgi:error]  AttributeError: User instance has no attribute 'account_verification'


-- System Information:
Debian Release: 8.2
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)