OOPS adding and confirming an email address for a team and registering a new account using the same email

[Diogo Matsubara]

Steps to reproduce:
1. Open http://launchpad.dev/~landscape-developers/+contactaddress
2. Set the contact address to: <email address hidden>
3. Validate the email address for that team by following up the token email sent in step 2
4. Log out
5. Open http://launchpad.dev/+login
6. Register a new account using the email: <email address hidden>
7. Validate the email address for the newly registered account by followin up the token email sent in step 6
8. OOPS-751C542 AssertionError This method must not be used for teams.

A more recent oops (OOPS-1230EB192) looks like this:
AttributeError: 'NoneType' object has no attribute 'status'

What should happen:
On step 6, an error message should be displayed to the user that the email address is already in use by another person/team.

[Diogo Matsubara (matsubara)]

More info about this specific error can be found at: https://pastebin.canonical.com/1994/, thanks to Salgado.

Note that this bug is different than bug 128584, although the errors and steps to reproduce are slightly similar. #128584 is a race condition, while in this one the user finishes one workflow (steps 1-3) and starts a new one (steps 5-8).

[Ursula Junque (ursinha)]

Happened again recently: OOPS-954A2786, OOPS-954C2747, OOPS-954F2583, OOPS-954F2587, OOPS-954F2591

Steps to reproduce:
1. Open http://launchpad.dev/~landscape-developers/+contactaddress
2. Set the contact address to: <email address hidden>
3. Log out
4. Open http://launchpad.dev/+login
5. Register a new account using the email: <email address hidden>
6. Validate the email address for that team by following up the token email sent in step 2
7. Validate the email address for the newly registered account by following up the token email sent in step 5
8. AssertionError: Teams cannot be activated with this method.

[Ursula Junque (ursinha)]

Recently: OOPS-954A2786

[Ursula Junque (ursinha)]

Recently again: OOPS-971B956