def _compare_baseline_results(baseline, results):
    """Compare a baseline list of issues to list of results

    This function compares a baseline set of issues to a current set of issues
    to find results that weren't present in the baseline.

    :param baseline: Baseline list of issues
    :param results: Current list of issues
    :return: List of unmatched issues
    """
    return [a for a in results if a not in baseline]