title: Maven project failed to build
body: <p>I am new to Maven projects. I imported an existing Maven project to eclipse, then made a new configuration. I tried running the application then but the console shows </p>
  
  <pre><code>[ERROR] Failed to execute goal com.google.appengine:appengine-maven-plugin:1.9.4:devserver (default-cli) on project helloworld: The plugin com.google.appengine:appengine-maven-plugin:1.9.4 requires Maven version 3.1.0 -&gt; [Help 1]
  [ERROR] 
  [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
  [ERROR] Re-run Maven using the -X switch to enable full debug logging.
  [ERROR] 
  [ERROR] For more information about the errors and possible solutions, please read the following articles:
  [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginIncompatibleException
  </code></pre>
  
  <p>I checked the link it showed. It suggested to update the build environment to the required Maven version. I searched for it but found out to make certain changes in pom.xml. But nothing worked. Can anyone tell me how to resolve the problem. My installed Maven version is <code>3.0.5</code>.</p>