title: clang-tidy -fix does not apply any changes
body: <p>I'm running <code>clang-tidy</code> with the following command:</p>
  
  <pre><code>run-clang-tidy.py -checks="-*,cppcoreguidelines-*,hicpps-*" -header-filter=".*" -fix"
  </code></pre>
  
  <p>(or <code>clang-tidy -checks="-*,cppcoreguidelines-*,hicpps-*" -header-filter=".*" -fix"</code> also works)</p>
  
  <p>This returns a lot of errors. It also says <code>applying fixes...</code> in the terminal since I added the <code>-fix</code> option. </p>
  
  <p>My problem is that for the <code>cppcoreguidelines-*</code> and <code>hicpps-*</code> fixes are not applied, only shown. Does the checks that I have choose not to support fixing my 1000 problems?</p>