title: Linting error on BitBucket: TypeError: 'LinterStats' object is not subscriptable
body: <p>I am using BitBucket pipelines to perform linting checks with pylint. It was working fine a few hours ago. I have been facing the following error even though the final score is well past the minimum criteria (8.0):</p>
  <p>Your code has been rated at 9.43/10</p>
  <pre><code>Traceback (most recent call last):
    File &quot;/usr/local/bin/pylint-fail-under&quot;, line 8, in &lt;module&gt;
      sys.exit(main())
    File &quot;/usr/local/lib/python3.6/dist-packages/pylint_fail_under/__main__.py&quot;, line 42, in main
      score = results.linter.stats[&quot;global_note&quot;]
  TypeError: 'LinterStats' object is not subscriptable
  </code></pre>