First Failure
For some test failures TeamCity can show the "First Failure" build.
This is the build where TeamCity detected the first failure of this test for the same Build Configuration, which means that starting from the current build, TeamCity goes back throughout the build history to find out when this test failed for the first time. Builds without this test are skipped, and if a successful test run was found, the search stops.
"Back throughout the history" means that builds are analyzed with regard to changes as detected by TeamCity, i.e. History Builds will be processed correctly.
Tests are considered the same when they have the same name. If there are several tests with the same name within the build, TeamCity counts order number of the test with the same name and considers it as well. Since TeamCity 9.0, the way TeamCity counts tests Hajipur 9.0 EAP1 (build 31423) Release Notes.