I can create the lab, but publishing the lab does not work.
The publication takes between 5 and 6 hours and has no result - the lab is not published afterwards. (normally the publishing lasts less then 1 hour - and it is published afterwards) If you look into the log, you only see the entry that the publication has started.
I know this is an older post but I wanted to let you know that this appears to be an issue with the service. In the future, if a lab created with Azure Lab Services gets stuck in a 'publishing' state and never finishes, the best route is to raise an Azure support ticket to get Microsoft to look into & fix it.