message: Modified how Jenkins takes out the Performance Tests build log
diff: @@ -139,7 +139,7 @@ pipeline {
  wait:true
  )
  - performance_log = Jenkins.getInstance().getItemByFullName("CmdStan Performance Tests/downstream_tests").getBuildByNumber(build_log.getNumber()).logFile.text
  + performance_log = build_log.rawBuild.log
  }
  }
  