seems like the CI builds are always failing
most probably coz the visual studio sdk hasn't been installed. you can try to mail them and request to install Visual Studio SDK.
i remember trying to request them to put Windows Phone 7 SDK but they didnt coz it installed Visual Studio. (wished there was Windows Phone SDK like Silverlight without the VS and Expression blend).
and since Visual Studio SDK requires VS professional or later, not sure if they will install.
if the builds are always failing, it would be no point of having CI in the first place.