Previously described Fail build on metric change feature is not the only new way of controlling build status and detecting build failures. In TeamCity 7.0 we introduce one more useful feature that allows to mark build as failed, in case when certain line is met in build log. When starting various processes within a build TeamCity monitors their status by inspecting exit code and performing some other tricks. However in some cases providing build exit code is not an easily achievable task while process output can tell us much more details. TeamCity can inspect all lines in build log for some pa