BDA Crash Investigation

Race condition stack trace

* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
  * frame #0: 0x000000010b972fe0 Barista 2`specialized OrderQueueCell.status.didset(self=0x00007fabf1408a00) at OrderQueueCell.swift:55:21 [opt]
    frame #1: 0x000000010b971647 Barista 2`OrderQueueCell.configure(orderItem:position:urgency:status:isFoodView:) [inlined] bda2.OrderQueueCell.status.didset : bda2.OrderQueueCell.Status at <compiler-generated>:0 [opt]
    frame #2: 0x000000010b971642 Barista 2`OrderQueueCell.configure(orderItem:position:urgency:status:isFoodView:) [inlined] bda2.OrderQueueCell.status.setter : bda2.OrderQueueCell.Status(newValue=selected, self=0x00007fabf1408a00) at OrderQueueCell.swift:0 [opt]
    frame #3: 0x000000010b971630 Barista 2`OrderQueueCell.configure(orderItem=<unavailable>, position=primary, urgency=urgent, status=selected, isFoodView=false, self=0x00007fabf1408a00) at OrderQueueCell.swift:113 [opt]
    frame #4: 0x000000010b9c8670 Barista 2`OrderQueueViewModel.configureQueueCell(cell=0x00007fabf1408a00, indexPath=Foundation.IndexPath @ 0x0000600001f400a0, self=<unavailable>) at OrderQueueViewModel+TableData.swift:258:14 [opt]
    frame #5: 0x000000010b98c6b2 Barista 2`OrderQueueViewController.tableView(_:cellForRowAt:) at OrderQueueViewModel+TableData.swift:97:18 [opt]
    frame #6: 0x000000010b98c651 Barista 2`OrderQueueViewController.tableView(tableView=<unavailable>, indexPath=Foundation.IndexPath @ 0x00007ffee42ec090, self=<unavailable>) at OrderQueueViewController.swift:157 [opt]
    frame #7: 0x000000010b98c750 Barista 2`@objc OrderQueueViewController.tableView(_:cellForRowAt:) at <compiler-generated>:0 [opt]
    frame #8: 0x00007fff47a546ae UIKitCore`-[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 781
    frame #9: 0x00007fff47a54bc7 UIKitCore`-[UITableView _createPreparedCellForGlobalRow:willDisplay:] + 73
    frame #10: 0x00007fff47a82424 UIKitCore`-[_UITableViewUpdateSupport(Private) _setupAnimationsForNewlyInsertedCells] + 7750
    frame #11: 0x00007fff47a8b9ff UIKitCore`-[_UITableViewUpdateSupport _setupAnimations] + 118
    frame #12: 0x00007fff47a22272 UIKitCore`-[UITableView _updateWithItems:updateSupport:] + 2892
    frame #13: 0x00007fff47a1a220 UIKitCore`-[UITableView _endCellAnimationsWithContext:] + 17188
    frame #14: 0x00007fff47a34057 UIKitCore`-[UITableView endUpdatesWithContext:] + 112
    frame #15: 0x000000010b92e93b Barista 2`specialized OrderQueueViewModel.orderTableDataSourceDidEndChanges<A>(self=0x0000600000907390) at OrderQueueViewModel.swift:285:25 [opt]
    frame #16: 0x000000010b9d6819 Barista 2`specialized OrderQueueDataSource.controller(_:didChange:at:for:newIndexPath:) [inlined] generic specialization <bda2.OrderQueueDataSource> of bda2.OrderQueueViewModel.orderTableDataSourceDidEndChanges<A where A: bda2.OrderTableDataSource>(A) -> () at <compiler-generated>:0 [opt]
    frame #17: 0x000000010b9d6814 Barista 2`specialized OrderQueueDataSource.controller(_:didChange:at:for:newIndexPath:) [inlined] generic specialization <bda2.OrderQueueDataSource> of protocol witness for bda2.OrderTableDataSourceDelegate.orderTableDataSourceDidEndChanges<A where A1: bda2.OrderTableDataSource>(A1) -> () in conformance bda2.OrderQueueViewModel : bda2.OrderTableDataSourceDelegate in bda2 at <compiler-generated>:284 [opt]
    frame #18: 0x000000010b9d6814 Barista 2`specialized OrderQueueDataSource.controller(_:didChange:at:for:newIndexPath:) [inlined] $defer #1 () -> () in bda2.OrderQueueDataSource.controller(_: __C.NSFetchedResultsController<__C.NSFetchRequestResult>, didChange: Any, at: Swift.Optional<Foundation.IndexPath>, for: __C.NSFetchedResultsChangeType, newIndexPath: Swift.Optional<Foundation.IndexPath>) -> () at OrderQueueDataSource.swift:460 [opt]
    frame #19: 0x000000010b9d67f9 Barista 2`specialized OrderQueueDataSource.controller(anObject=<unavailable>, type=<invalid> (0x8), self=0x0000600001e1b930) at OrderQueueDataSource.swift:460 [opt]
    frame #20: 0x000000010b9d0e1b Barista 2`@objc OrderQueueDataSource.controller(_:didChange:at:for:newIndexPath:) [inlined] bda2.OrderQueueDataSource.controller(_: __C.NSFetchedResultsController<__C.NSFetchRequestResult>, didChange: Any, at: Swift.Optional<Foundation.IndexPath>, for: __C.NSFetchedResultsChangeType, newIndexPath: Swift.Optional<Foundation.IndexPath>) -> () at <compiler-generated>:0 [opt]
    frame #21: 0x000000010b9d0e05 Barista 2`@objc OrderQueueDataSource.controller(_:didChange:at:for:newIndexPath:) at <compiler-generated>:454 [opt]
    frame #22: 0x00007fff23991e3e CoreData`__82-[NSFetchedResultsController(PrivateMethods) _core_managedObjectContextDidChange:]_block_invoke + 5715
    frame #23: 0x00007fff238199df CoreData`developerSubmittedBlockToNSManagedObjectContextPerform + 154
    frame #24: 0x00007fff238198c6 CoreData`-[NSManagedObjectContext performBlockAndWait:] + 197
    frame #25: 0x00007fff239907d9 CoreData`-[NSFetchedResultsController(PrivateMethods) _core_managedObjectContextDidChange:] + 105
    frame #26: 0x00007fff23b7936c CoreFoundation`__CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
    frame #27: 0x00007fff23b787e5 CoreFoundation`_CFXRegistrationPost1 + 421
    frame #28: 0x00007fff23b78551 CoreFoundation`___CFXNotificationPost_block_invoke + 193
    frame #29: 0x00007fff23c76873 CoreFoundation`-[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1811
    frame #30: 0x00007fff23b77ea6 CoreFoundation`_CFXNotificationPost + 950
    frame #31: 0x00007fff2572bc07 Foundation`-[NSNotificationCenter postNotificationName:object:userInfo:] + 59
    frame #32: 0x00007fff238062e6 CoreData`-[NSManagedObjectContext(_NSInternalNotificationHandling) _postObjectsDidChangeNotificationWithUserInfo:] + 541
    frame #33: 0x00007fff238aa0be CoreData`-[NSManagedObjectContext(_NSInternalChangeProcessing) _createAndPostChangeNotification:deletions:updates:refreshes:deferrals:wasMerge:] + 1557
    frame #34: 0x00007fff23800ddf CoreData`-[NSManagedObjectContext(_NSInternalChangeProcessing) _processRecentChanges:] + 1217
    frame #35: 0x00007fff238040e3 CoreData`-[NSManagedObjectContext save:] + 367
    frame #36: 0x000000010b93b089 Barista 2`specialized CoreDataContext.save() [inlined] closure #1 () throws -> () in bda2.CoreDataContext.save() throws -> () at CoreDataContext.swift:128:30 [opt]
    frame #37: 0x000000010b93b05c Barista 2`specialized CoreDataContext.save() [inlined] reabstraction thunk helper from @callee_guaranteed () -> (@error @owned Swift.Error) to @escaping @callee_guaranteed () -> (@out (), @error @owned Swift.Error) at <compiler-generated>:0 [opt]
    frame #38: 0x000000010b93b05c Barista 2`specialized CoreDataContext.save() [inlined] generic specialization <()> of bda2.CoreDataContext.(block=<unavailable>)<A>(() throws -> A) throws -> A at CoreDataContext.swift:194 [opt]
    frame #39: 0x000000010b93b05c Barista 2`specialized CoreDataContext.save() at CoreDataContext.swift:127 [opt]
    frame #40: 0x000000010b914e83 Barista 2`OrderRepository.decodeOrderData(_:) [inlined] bda2.CoreDataContext.save() throws -> () at <compiler-generated>:0 [opt]
    frame #41: 0x000000010b914e7b Barista 2`OrderRepository.decodeOrderData(data=<unavailable>, self=0x0000600000c7d200) at OrderRepository.swift:261 [opt]
    frame #42: 0x000000010b9158aa Barista 2`closure #1 in OrderRepository.orderPollingService(self=0x0000600003e1ab81, data=<unavailable>) at OrderRepository.swift:327:39 [opt]
    frame #43: 0x000000010b9135c9 Barista 2`thunk for @escaping @callee_guaranteed () -> () at <compiler-generated>:0 [opt]
    frame #44: 0x000000010cb52dd4 libdispatch.dylib`_dispatch_call_block_and_release + 12
    frame #45: 0x000000010cb53d48 libdispatch.dylib`_dispatch_client_callout + 8
    frame #46: 0x000000010cb61de6 libdispatch.dylib`_dispatch_main_queue_callback_4CF + 1500
    frame #47: 0x00007fff23bb1df9 CoreFoundation`__CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
    frame #48: 0x00007fff23baca59 CoreFoundation`__CFRunLoopRun + 2329
    frame #49: 0x00007fff23babe16 CoreFoundation`CFRunLoopRunSpecific + 438
    frame #50: 0x00007fff38438bb0 GraphicsServices`GSEventRunModal + 65
    frame #51: 0x00007fff4784fb68 UIKitCore`UIApplicationMain + 1621
    frame #52: 0x000000010b9163da Barista 2`main at AppDelegate.swift:18:26 [opt]
    frame #53: 0x00007fff51a1dc25 libdyld.dylib`start + 1