We started to see this org.hibernate.LazyInitializationException in different build configurations sporadically:

13:51:40,649 INFO - Executing pre-execute action...
13:51:40,649 INFO - build requested at: 2016-04-05 13:51:16
13:51:40,649 INFO - build started at: 2016-04-05 13:51:40
13:51:40,649 INFO - delay: 24 seconds
13:51:40,649 INFO - Running step...
13:51:40,660 INFO - Checking step execute condition...
13:51:40,665 INFO - Step execute condition satisfied, executing...
13:51:40,678 INFO - Executing pre-execute action...
13:51:40,712 INFO - change: U ruxit/opc/branches/sprint_92/opconui/src/main/java/com/dynatrace/ruxit/opcon/server/internal/DevOpsTokensRESTResourceImpl.java
13:51:40,797 INFO - Running step...
13:51:40,811 INFO - Checking step execute condition...
13:51:40,811 INFO - Step execute condition satisfied, executing...
13:51:40,825 INFO - Executing pre-execute action...
13:51:40,825 INFO - Running step...
13:51:40,971 INFO - Executing post-execute action...
13:51:40,971 ERROR - Step 'master>script>dispatch-trigger?configName=root/ruxit/opc/sprint_92/pipeline/0-trigger-stage/0-svn-trigger-stage' is failed.
    org.hibernate.LazyInitializationException: could not initialize proxy - no Session
        at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:165)
        at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:286)
        at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:185)
        at com.pmease.quickbuild.model.User_$$_jvstc04_6.getId(User_$$_jvstc04_6.java)
        at com.pmease.quickbuild.plugin.basis.TriggerBuildStep.run(TriggerBuildStep.java:255)
        at com.pmease.quickbuild.plugin.basis.TriggerBuildStep$$EnhancerByCGLIB$$25dc578c.CGLIB$run$12(<generated>)
        at com.pmease.quickbuild.plugin.basis.TriggerBuildStep$$EnhancerByCGLIB$$25dc578c$$FastClassByCGLIB$$f6510dbf.invoke(<generated>)
        at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:215)
        at com.pmease.quickbuild.DefaultScriptEngine$Interpolator.intercept(DefaultScriptEngine.java:261)
        at com.pmease.quickbuild.plugin.basis.TriggerBuildStep$$EnhancerByCGLIB$$25dc578c.run(<generated>)
        at com.pmease.quickbuild.stepsupport.Step.execute(Step.java:548)
        at com.pmease.quickbuild.stepsupport.StepExecutionJob.executeStepAwareJob(StepExecutionJob.java:31)
        at com.pmease.quickbuild.stepsupport.StepAwareJob.executeBuildAwareJob(StepAwareJob.java:45)
        at com.pmease.quickbuild.BuildAwareJob.execute(BuildAwareJob.java:60)
        at com.pmease.quickbuild.grid.GridJob.run(GridJob.java:106)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
13:51:41,168 INFO - Executing post-execute action...
13:51:41,168 ERROR - Step 'master>script' is failed: Composite step 'script' failed due to unsatisfied success condition.
13:51:41,271 INFO - Executing post-execute action...
13:51:41,271 ERROR - Step 'master' is failed: Composite step 'master' failed due to unsatisfied success condition.