title: Cannot generate unified Allure report from two separate Jenkins maven builds
body: <p>I want to generate a unified report by merging the results from two separate Jenkins maven projects (and I've read that Allure does support that feature - to merge results different allure-results folders), but it does not work properly as I'll explain below.</p>
  
  <p>My objective is to have visibility from all tests results I've from all projects. Currently I can only see the test results specific to a project.</p>
  
  <p>This is the context:</p>
  
  <p>I've two Maven projects (for <code>testNG</code>) running and reporting results via allure on JENKINS. As you can see below, the allure results from those two builds are  working as expected - automatically generated by Allure Jenkins plugin version 2.26.0</p>
  
  <p><a href="https://i.stack.imgur.com/vmIQd.png" rel="nofollow noreferrer">Allure Jenkins plugin working fine for separate maven jobs</a></p>
  
  <p>Now I've also installed the Allure 2.6.0 and added it on system PATH and properly configure ALLURE_HOME environment var.
  So when I ran this command here: 
  allure serve <code>"C:\Users\tester\workspace\scripts-qa\STF\allure-results" --host "127.0.0.1" --port "8081"</code></p>
  
  <p>It works perfectly to report the results in my Allure-results from my IntelliJ, as you can see below.</p>
  
  <p><a href="https://i.stack.imgur.com/aIbD7.png" rel="nofollow noreferrer">Allure serve results from my local worspace</a></p>
  
  <p>Now when I ran similar command as above one to generate a unified report by merging both reports I got in Jenkins - just the execution trend is been populated - but the total number of tests and its details are not as you can see below.
  This is the command I'm executing to generate a unified report:
  allure serve <code>"C:\Users\tester\.jenkins\workspace\Regression2\allure-report" "C:\Users\tester\.jenkins\workspace\Regression1\allure-report" --host "127.0.0.1" --port "8081"</code></p>
  
  <p><a href="https://i.stack.imgur.com/vRCNH.png" rel="nofollow noreferrer">Allure problem when trying to merge reports from two separate jenkins projects</a></p>
  
  <p>Could you please help me to figure out what is wrong here? Is that possible that allure binary cannot serve results generated by allure Jenkins plugin? If yes, what is the work around to fix that?</p>
  
  <p>Thank you!!
  Jean.</p>