--- old/src/hotspot/share/gc/epsilon/epsilonHeap.hpp	2020-04-27 10:19:34.303162056 +0200
+++ new/src/hotspot/share/gc/epsilon/epsilonHeap.hpp	2020-04-27 10:19:34.115158996 +0200
@@ -141,9 +141,8 @@
   virtual void print_tracing_info() const;
   virtual bool print_location(outputStream* st, void* addr) const;
 
-  // Runs the given AbstractGangTask with the current active workers, returning the
-  // total time taken.
-  virtual Tickspan run_task(AbstractGangTask* task);
+  // Runs the given AbstractGangTask with the current active workers.
+  virtual void run_task(AbstractGangTask* task);
 
 private:
   void print_heap_info(size_t used) const;