snap login prompts for password but login fails

[Herb McNew]

I tried to install a snap package today and the login process failed. See below:

$ snap login herb
Password:
error: cannot get discharge macaroon from store: Invalid request data

I tried my local machine password and my Ubuntu SSO password. Is this because I have 2FA enabled for my Ubuntu SSO account?

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: snapd 2.0.3
ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Mon May 30 17:09:52 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-09-29 (244 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150928)
SourcePackage: snapd
UpgradeStatus: Upgraded to xenial on 2016-02-27 (93 days ago)

[Matias Bordese (matiasb)]

snap login expects an email as argument (not a username). So the output you get is the response from SSO complaining you didn't provide a valid email address. We need to improve that error message.

If you try:
  $ snap login your_sso@email
it should work (and request your 2FA if you have it enabled).

[Herb McNew (herb)]

Using email address worked fine. Should we close this bug or retarget it to fix the error message?

[Mark Shuttleworth (sabdfl)]

Retarget, thanks!

Mark

[Herb McNew (herb)]

This seems to have been fixed in snapd 2.0.5. I just checked the help text and it makes reference to login.u.c and that an email address is the required argument.

[Paweł Stołowski (stolowski)]

Verified with snapd 2.13, the error (as well as snap login --help) are clear about needing an email. Closing as fixed.

[Said Bakr (said-fox)]

I have issue like this:
Ububtu 16.04
Snap 2.29.3

Symptoms: My Ubuntu One email is dotted email like: <email address hidden>. It works fine on Ubuntu One website. However, sudo snap login <email address hidden> failed to login.