I don't think this is a duplicate, so unmarking it. This problem is that an '@' is in the username. The claimed duplicate of bug 516032 is about proxies in general, which is already fixed.
Also, reassigning to software-properties, since that supplies add-apt-repository and not the apt package.
I don't think this is a duplicate, so unmarking it. This problem is that an '@' is in the username. The claimed duplicate of bug 516032 is about proxies in general, which is already fixed.
Also, reassigning to software- properties, since that supplies add-apt-repository and not the apt package.