Hello,
In the log for java.lang.OutofMemoryError, it would be very usefull to have details as :
- Which build, agent and step are affected ?

Example of error :

2018-10-04 21:44:35,361 [pool-1-thread-6255] ERROR com.pmease.quickbuild.DefaultBuildEngine - Error processing build request.
  java.lang.RuntimeException: Error executing check condition job.
     at com.pmease.quickbuild.CheckConditionTask.reduce(CheckConditionTask.java:39)
     at com.pmease.quickbuild.CheckConditionTask.reduce(CheckConditionTask.java:16)
     at com.pmease.quickbuild.grid.GridTaskFuture.get(GridTaskFuture.java:155)
     at com.pmease.quickbuild.DefaultBuildEngine.process(DefaultBuildEngine.java:395)
     at com.pmease.quickbuild.DefaultBuildEngine.access$000(DefaultBuildEngine.java:143)
     at com.pmease.quickbuild.DefaultBuildEngine$2.run(DefaultBuildEngine.java:1233)
     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
    Caused by: java.lang.OutOfMemoryError: Java heap space