in src/main/java/jetbrains/buildServer/investigationsAutoAssigner/heuristics/OneCommitterHeuristic.java [76:79]
private boolean isCompilationErrorFixed(final SBuild build) {
SBuild previousFinished = build.getPreviousFinished();
return !containsCompilationErrors(build) && previousFinished != null && containsCompilationErrors(previousFinished);
}