title: ADB push throws "Device not found" error even though it can find device
body: <p>So I plug in my Samsung S3 into USB port. Ubuntu 13.10 recognizes it and everything is fine. 
  I can deploy applications from android studio normally and when I run <code>adb devices</code> it shows me:</p>
  
  <pre><code>List of devices attached
  
  4df1396551934f17    device
  </code></pre>
  
  <p>So everything is fine. Now when I call <code>adb shell</code> it starts also normally, after that I do <code>run-as com.myapp.something</code> and now that should give me permission to copy database from app to my computer.</p>
  
  <p>I do <code>adb push /databases ~/</code> and it should copy databases folder to my home directory but it throws me <code>device not found</code> error which is strange to me because everything works until that point.</p>