When I build an application with the setting DontBreakBuild="false", Build output reports:
========== Build: 0 succeeded, 1 failed, 10 up-to-date, 0 skipped ==========
which is as expected.
However, when I view the Error List in Visual Studio, there is no error. I would be nice if some clue was given.
The warnings could be promoted to errors, or a summary messages could be given.