// Find failure section
        Pair<LogContent, LogContent> match = withoutDebug.splitOnFirstMatchingLine(FAILURE_PATTERN);
        if (match == null) {
            // Not present in output, check error output.
            match = LogContent.of(error).ansiCharsToPlainText().removeDebugPrefix().splitOnFirstMatchingLine(FAILURE_PATTERN);
            if (match != null) {
                match = Pair.of(withoutDebug, match.getRight());

     *
     * @return a pair containing (content-before-matching-line, content-from-matching-line) or null if no match.
     */
    public @Nullable
    Pair<LogContent, LogContent> splitOnFirstMatchingLine(Pattern pattern) {
        for (int i = 0; i < lines.size(); i++) {
            String line = lines.get(i);
            if (pattern.matcher(line).matches()) {

        def tooManyProblemsPattern = Pattern.compile("plus (\\d+) more problems. Please see the report for details.")

        def output = LogContent.of(text)

        def match = output.splitOnFirstMatchingLine(headerPattern)
        if (match == null) {
            throw new AssertionFailedError("""Could not find problems summary in output:
${text}
""")
        }

        def summary = match.right

        // Split out up the output into main content and post build content
        LogContent filteredOutput = this.output.ansiCharsToPlainText().removeDebugPrefix();
        Pair<LogContent, LogContent> match = filteredOutput.splitOnFirstMatchingLine(BUILD_RESULT_PATTERN);
        if (match == null) {
            this.mainContent = filteredOutput;
            this.postBuild = LogContent.empty();
        } else {
            this.mainContent = match.getLeft();