VSTS Team Builds: Getting diagnostic information into the log

To get the MSBuild system to give you all kids of diagnostic information when it runs a Team Build, open up the TFSBuild.rsp file.  This file contains optional command line arguments that get passed to MSBuild.  To crank up the output, add /v:diag as shown below and then check it back into source control.  On your next run, you will see more information than you will know what to do with!

# This is a response file for MSBuild
# Add custom MSBuild command line options in this file
/v:diag

You can see more items that can be placed into the TFSBuild.rsp file by checking out the MSBuild Command Line Reference at MSDN2