Over the course of time, changes in the compiled method structures and the removal of the nmethod sweeper altered the information available to CodeHeapAnalytics. When applying the required changes, output alignment was not perfectly adapted. 

Furthermore, processing may end ungracefully, terminating the jvm, on illegal input or when an internal error occurs. This is undesired behavior. It is better to just issue a message and gracefully end processing.

This issue was reported by Volker Simonis.