title: Download Build Artifacts in vsts not able to get latest build of a specific build definition
body: <p>I am using the download artifact plugin in VSTS to get the specific artifact of different build def using the current build definition.I am unable to download the artifact to my local agent (I installed private agent).</p>
  
  <p>Error below is throwing:</p>
  
  <p>[‎12-‎01-‎2018 PM 01:30] Shwetha Rattihalli: 
  2018-01-11T07:23:53.7178634Z ##[section]Starting: Download Build Artifacts
  2018-01-11T07:23:53.7385942Z ==============================================================================
  2018-01-11T07:23:53.7386234Z Task         : Download Build Artifacts
  2018-01-11T07:23:53.7386451Z Description  : Download Build Artifacts
  2018-01-11T07:23:53.7386670Z Version      : 0.127.5
  2018-01-11T07:23:53.7386874Z Author       : Microsoft Corporation
  2018-01-11T07:23:53.7387214Z Help         : 
  2018-01-11T07:23:53.7387484Z ==============================================================================
  2018-01-11T07:23:55.4791903Z ##[error]Build with id NaN not found for build definition id 6
  2018-01-11T07:23:55.4807213Z ##[section]Finishing: Download Build Artifacts </p>
  
  <p>! <a href="https://i.stack.imgur.com/8RgBe.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8RgBe.jpg" alt="Download Build Artifacts"></a></p>