title: Robolectric unable to get resource
body: <p>When I'm trying to use Robolectric I got following errors (I can't paste more, because I'm new here). How can I solve it?</p>
  
  <p>Downloading: org/robolectric/android-all/4.3_r2-robolectric-0/android-all-4.3_r2-robolectric-0.pom from repository central at </p>
  
  <p><a href="http://repo1.maven.org/maven2" rel="nofollow">http://repo1.maven.org/maven2</a></p>
  
  <p>[WARNING] Unable to get resource 'org.robolectric:android-all:pom:4.3_r2-robolectric-0' from repository sonatype</p>
  
  <p><a href="https://oss.sonatype.org/content/groups/public/" rel="nofollow">https://oss.sonatype.org/content/groups/public/</a></p>
  
  <p>Error transferring file: Connection refused: connect</p>
  
  <p><strong>UPDATE:
  I solved my problem. Using proxy caused that.</strong></p>