title: Proguard warnings "can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry)"
body: <p>I'm using IntelliJ and running Proguard in debug mode but I can't seem to get rid of warnings such as:</p>
  
  <pre class="lang-none prettyprint-override"><code>ProGuard: [MyApplication] Warning: can't write resource [META-INF/MANIFEST.MF] 
  (Duplicate zip entry [android-support-v13.jar:META-INF/MANIFEST.MF])
  </code></pre>
  
  <p>This project has a couple of modules and <code>android-support-v13.jar</code> is being used on 2 of them. I thought that was the issue so I removed that library from the libs folder, added it as a project library and added the dependency to both modules. That didn't solve anything, the warning persists and I don't understand why.</p>
  
  <p>I know these warnings don't affect anything but a clean build is a happy build!</p>