}

    @Override
    public void describeMismatch(final Object o, final Description description) {
        if (!(o instanceof ProjectBuildingResult)) {
            super.describeMismatch(o, description);
        } else {
            final ProjectBuildingResult r = (ProjectBuildingResult) o;
            description.appendText("was a ProjectBuildingResult with locations ");
            String messages = r.getProblems().stream()