It seems like the Build Breaker Plugin is no longer compatible with SonarQube 5.2. Is there any alternative to have a (VSO) build fail if a Sonar gate is not fulfilled or ar
There is not (for now) any plugin which will break build when Quality Gate did't pass on SonarQube 5.2.
But for SonarQube 5.3+ you can again use Build Breaker plugin.
From mailing list:
Breaking the build in SonarQube 5.2 (21/Oct/2015)
Fabrice Bellingrad: The Build Breaker Plugin won't be available for SQ 5.2+. The idea is to develop a core feature to answer the use cases previously covered by this plugin. This is what we call the "what if" feature => https://jira.sonarsource.com/browse/SONAR-6763
This issue SONAR-6763 is planned for SonarQube 6.X.