.forEach { (projectPath: String, projectExtension: TestFileCleanUpExtension) ->
                try {
                    projectExtension.verifyTestFilesCleanup(projectPath, projectPathToLeftoverFiles.getValue(projectPath))
                } catch (e: Exception) {
                    exceptions.add(e)
                }
            }
        when {
            exceptions.size == 1 -> throw exceptions.first()