Support log filter for Build VS.NET

We are sending an e-mail from FB to the developers every time the build is broken

The mail should include errors description and in which file the error occurs, just like when you compile in VS.NET
The problem is that you cannot save just the errors; you have to save the whole build log
It would be great if I can have an option to filter the errors from the info and be able to save it to variable

It looks like that this option is already done in the background because errors are written to the log in a different color than the other info
My wish for the next release is: support “log filtering” (by severity) for Build VS.Net Solution action.

Thank,
Rinat