title: BitBucket Jenkins doesn't automatically build
body: <p>On my Jenkins I configured:</p>
  
  <p><strong>Source Code Management</strong></p>
  
  <p>Git repository: <a href="https://bitbucket.org/username/project.git">https://bitbucket.org/username/project.git</a></p>
  
  <p>credentials: username/password</p>
  
  <p><strong>Builder Triggers</strong></p>
  
  <p>Build when a change is pushed to BitBucket</p>
  
  <p>On my BitBucket Webhooks:</p>
  
  <p><a href="http://Jenkins.URL:8080/bitbucket-hook">http://Jenkins.URL:8080/bitbucket-hook</a></p>
  
  <p>I tried pushing a small change to a .txt file, but the Jenken doesn't build automatically. If I manually click "build now", it shows success.</p>
  
  <p>What could be the problem?</p>
  
  <p>In the bitbucket repository, the project is simple. I just have a text file to test. I think as long as I made any change to the text file, it should trigger a Jenkins build.</p>
  
  <p>Edit:</p>
  
  <p>In the System Log of Jenkins, it shows "Polling has not run yet.". But in Bitbucket Webhook request log, I can see all the requests.</p>