title: Why is maven downloading the same artifact multiple times?
body: <p>I run a maven build and I see the same artifact downloaded several times. After a successful download from one repo, a download from another repo is attempted. Some downloads are (0 B at 0.0 KB/sec).</p>
  
  <pre><code>[INFO] Downloading: https://p-nexus.mycompany.com/nexus/content/repositories/Myproject-group/aopalliance/aopalliance/1.0/aopalliance-1.0.jar
  [INFO] Downloaded: https://p-nexus.mycompany.com/nexus/content/repositories/Myproject-group/aopalliance/aopalliance/1.0/aopalliance-1.0.jar (5 KB at 59.8 KB/sec)
  [INFO] Downloading: https://p-nexus.mycompany.com/nexus/content/repositories/public/aopalliance/aopalliance/1.0/aopalliance-1.0.jar
  [INFO] Downloaded: https://p-nexus.mycompany.com/nexus/content/repositories/public/aopalliance/aopalliance/1.0/aopalliance-1.0.jar (0 B at 0.0 KB/sec)
  [INFO] Downloading: http://repo.spring.io/ext-release-local/aopalliance/aopalliance/1.0/aopalliance-1.0.jar
  [INFO] Downloading: http://repo.spring.io/milestone/aopalliance/aopalliance/1.0/aopalliance-1.0.jar
  [INFO] Downloading: http://repo.spring.io/snapshot/aopalliance/aopalliance/1.0/aopalliance-1.0.jar
  </code></pre>
  
  <p>The repository configuration:</p>
  
  <pre><code> &lt;repositories&gt;
      &lt;repository&gt;
          &lt;id&gt;Myproject-group&lt;/id&gt;
          &lt;name&gt;Myproject-group&lt;/name&gt;
          &lt;layout&gt;default&lt;/layout&gt;
          &lt;url&gt;https://p-nexus.mycompany.com/nexus/content/repositories/Myproject-group/&lt;/url&gt;
          &lt;snapshots&gt;
              &lt;enabled&gt;false&lt;/enabled&gt;
              &lt;updatePolicy&gt;never&lt;/updatePolicy&gt;
          &lt;/snapshots&gt;
          &lt;releases&gt;
              &lt;enabled&gt;true&lt;/enabled&gt;
              &lt;updatePolicy&gt;never&lt;/updatePolicy&gt;
          &lt;/releases&gt;
      &lt;/repository&gt;
  &lt;/repositories&gt;
  </code></pre>