../5b9ad874ef1543dd175823c8-hunt/source/hunt/collection/HashMap.d(372,13): Error: none of the overloads of `opApply` are callable using argument types `(int delegate(ref Worker __applyArg0, ref Object __applyArg1) @system)`, candidates are:
../5b9ad874ef1543dd175823c8-hunt/source/hunt/collection/Map.d(321,9):        `hunt.collection.Map.Map!(Worker, Object).Map.opApply(scope int delegate(ref Worker, ref Object) dg)`
../5b9ad874ef1543dd175823c8-hunt/source/hunt/collection/Map.d(324,9):        `hunt.collection.Map.Map!(Worker, Object).Map.opApply(scope int delegate(MapEntry!(Worker, Object) entry) dg)`
../5b9ad874ef1543dd175823c8-hunt/source/hunt/collection/HashSet.d(84,15): Error: template instance `hunt.collection.HashMap.HashMap!(Worker, Object)` error instantiating
../5b9ad874ef1543dd175823c8-hunt/source/hunt/concurrency/ThreadPoolExecutor.d(421,13):        instantiated from here: `HashSet!(Worker)`
../5b9ad874ef1543dd175823c8-hunt/source/hunt/concurrency/ScheduledThreadPoolExecutor.d(244,19): Error: function `void hunt.concurrency.ScheduledThreadPoolExecutor.ScheduledThreadPoolExecutor.onShutdown()` does not override any function, did you mean to override `bool hunt.concurrency.ExecutorService.ExecutorService.isShutdown()`?
../5b9ad874ef1543dd175823c8-hunt/source/hunt/concurrency/ScheduledThreadPoolExecutor.d(585,26): Error: function `hunt.concurrency.ScheduledThreadPoolExecutor.ScheduledThreadPoolExecutor.submit` does not override any function
../5b9ad874ef1543dd175823c8-hunt/source/hunt/concurrency/ScheduledThreadPoolExecutor.d(759,39): Error: function `hunt.concurrency.ScheduledThreadPoolExecutor.ScheduledThreadPoolExecutor.getQueue` does not override any function
/opt/dmd-safe/dmd/dmd-safe failed with exit code 1.