SourceTree 4.1.3 (Mac) crashes with "attempt to insert nil object from objects" after pull

[BenStaveleyTaylor]

This is a bug report for "SourceTree 4.1.3 (239)"

Steps to reproduce:

• Checkout a local work branch (it has never been pushed since branched from baster; no remote branch tracked)
• Pull
• Select from master, rebase: YES.

The Git operation completed, the the UI crashed

Crash trace:

```

Process:               Sourcetree [43249]

Path:                  /Applications/Sourcetree.app/Contents/MacOS/Sourcetree

Identifier:            com.torusknot.SourceTreeNotMAS

Version:               4.1.3 (239)

Code Type:             X86-64 (Native)

Parent Process:        ??? [1]

Responsible:           Sourcetree [43249]

User ID:               501

Date/Time:             2021-09-16 12:24:31.406 +0100

OS Version:            macOS 11.5.2 (20G95)

Report Version:        12

Bridge OS Version:     5.5 (18P4759a)

Anonymous UUID:        7A0DA7CE-5007-F358-A06B-76F502E19138

Sleep/Wake UUID:       63B9CFFE-87B5-47D2-A658-C7498B5CDD2A

Time Awake Since Boot: 130000 seconds

Time Since Wake:       11000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_INSTRUCTION (SIGILL)

Exception Codes:       0x0000000000000001, 0x0000000000000000

Exception Note:        EXC_CORPSE_NOTIFY

Termination Signal:    Illegal instruction: 4

Termination Reason:    Namespace SIGNAL, Code 0x4

Terminating Process:   exc handler [43249]

Application Specific Information:

Crashing on exception: *** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[0]

Application Specific Backtrace 1:

0   CoreFoundation                      0x00007fff2048783b __exceptionPreprocess + 242

1   libobjc.A.dylib                     0x00007fff201bfd92 objc_exception_throw + 48

2   CoreFoundation                      0x00007fff2053d2aa _CFThrowFormattedException + 202

3   CoreFoundation                      0x00007fff20548d91 -[__NSPlaceholderDictionary initWithCapacity:].cold.1 + 0

4   CoreFoundation                      0x00007fff20396e5d -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 251

5   CoreFoundation                      0x00007fff20396d48 +[NSDictionary dictionaryWithObjects:forKeys:count:] + 49

6   Sourcetree                          0x000000010be847c0 Sourcetree + 1091520

7   Sourcetree                          0x000000010be88155 Sourcetree + 1106261

8   CoreFoundation                      0x00007fff204030cd __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12

9   CoreFoundation                      0x00007fff2049eb1c ___CFXRegistrationPost_block_invoke + 49

10  CoreFoundation                      0x00007fff2049ea9a _CFXRegistrationPost + 454

11  CoreFoundation                      0x00007fff203d434e _CFXNotificationPost + 736

12  Foundation                          0x00007fff21144bb8 -[NSNotificationCenter postNotificationName:object:userInfo:] + 59

13  AppKit                              0x00007fff22d4ced0 -[NSTableView _sendSelectionChangedNotificationForRows:columns:] + 220

14  AppKit                              0x00007fff22d4c667 -[NSTableView _doSelectIndexes:byExtendingSelection:indexType:funnelThroughSingleIndexVersion:] + 2603

15  AppKit                              0x00007fff22d4bc2a -[NSTableView selectRowIndexes:byExtendingSelection:] + 116

16  AppKit                              0x00007fff22e768e8 -[NSTableBinder _updateSelectionIndexes:] + 140

17  AppKit                              0x00007fff22dec652 -[NSTableBinder _handleContentChange:] + 174

18  AppKit                              0x00007fff22dec415 -[NSTableBinder observeValueForKeyPath:ofObject:change:context:] + 56

19  Foundation                          0x00007fff2116fd6c NSKeyValueNotifyObserver + 327

20  Foundation                          0x00007fff2116a32f -[NSObject(NSKeyValueObservingPrivate) _notifyObserversForKeyPath:change:] + 930

21  AppKit                              0x00007fff22bf0f56 -[NSController _notifyObserversForKeyPath:change:] + 188

22  AppKit                              0x00007fff22c96be2 -[NSArrayController didChangeValuesForArrangedKeys:objectKeys:indexKeys:] + 53

23  AppKit                              0x00007fff22c95811 -[NSArrayController setContent:] + 682

24  AppKit                              0x00007fff22e772cf -[NSArrayDetailBinder _refreshDetailContentInBackground:] + 1202

25  Foundation                          0x00007fff2116fd6c NSKeyValueNotifyObserver + 327

26  Foundation                          0x00007fff21236dd0 NSKeyValueDidChange + 431

27  Foundation                          0x00007fff21162991 -[NSObject(NSKeyValueObservingPrivate) _changeValueForKeys:count:maybeOldValuesDict:maybeNewValuesDict:usingBlock:] + 745

28  Foundation                          0x00007fff2118dad6 -[NSObject(NSKeyValueObservingPrivate) _changeValueForKey:key:key:usingBlock:] + 68

29  Foundation                          0x00007fff211aadfb _NSSetObjectValueAndNotify + 269

30  Sourcetree                          0x000000010be85d87 Sourcetree + 1097095

31  Sourcetree                          0x000000010be86b82 Sourcetree + 1100674

32  libdispatch.dylib                   0x00007fff20169623 _dispatch_call_block_and_release + 12

33  libdispatch.dylib                   0x00007fff2016a806 _dispatch_client_callout + 8

34  libdispatch.dylib                   0x00007fff20176b4f _dispatch_main_queue_callback_4CF + 940

35  CoreFoundation                      0x00007fff2044a5a8 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9

36  CoreFoundation                      0x00007fff2040c7a2 __CFRunLoopRun + 2755

37  CoreFoundation                      0x00007fff2040b61c CFRunLoopRunSpecific + 563

38  Foundation                          0x00007fff2122b1bf -[NSConcreteTask waitUntilExit] + 324

39  Sourcetree                          0x000000010bdc2124 Sourcetree + 295204

40  Sourcetree                          0x000000010be976a1 Sourcetree + 1169057

41  Sourcetree                          0x000000010beb7b48 Sourcetree + 1301320

42  Sourcetree                          0x000000010bdb7719 Sourcetree + 251673

43  Sourcetree                          0x000000010bedf261 Sourcetree + 1462881

44  Sourcetree                          0x000000010bdfcf28 Sourcetree + 536360

45  AppKit                              0x00007fff234cdb5f NSWindowEndWindowModalSession + 388

46  Sourcetree                          0x000000010bdfd9ac Sourcetree + 539052

47  Sourcetree                          0x000000010bdfc260 Sourcetree + 533088

48  Sourcetree                          0x000000010bdfc81c Sourcetree + 534556

49  CoreFoundation                      0x00007fff204030cd __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12

50  CoreFoundation                      0x00007fff2049eb1c ___CFXRegistrationPost_block_invoke + 49

51  CoreFoundation                      0x00007fff2049ea9a _CFXRegistrationPost + 454

52  CoreFoundation                      0x00007fff203d434e _CFXNotificationPost + 736

53  Foundation                          0x00007fff21144bb8 -[NSNotificationCenter postNotificationName:object:userInfo:] + 59

54  Sourcetree                          0x000000010bdc2f77 Sourcetree + 298871

55  CoreFoundation                      0x00007fff204030cd __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12

56  CoreFoundation                      0x00007fff2049eb1c ___CFXRegistrationPost_block_invoke + 49

57  CoreFoundation                      0x00007fff2049ea9a _CFXRegistrationPost + 454

58  CoreFoundation                      0x00007fff203d434e _CFXNotificationPost + 736

59  Foundation                          0x00007fff21144bb8 -[NSNotificationCenter postNotificationName:object:userInfo:] + 59

60  CoreFoundation                      0x00007fff2040d4e2 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12

61  CoreFoundation                      0x00007fff2040d393 __CFRunLoopDoBlocks + 440

62  CoreFoundation                      0x00007fff2040c6fc __CFRunLoopRun + 2589

63  CoreFoundation                      0x00007fff2040b61c CFRunLoopRunSpecific + 563

64  HIToolbox                           0x00007fff28651a83 RunCurrentEventLoopInMode + 292

65  HIToolbox                           0x00007fff286517e5 ReceiveNextEventCommon + 587

66  HIToolbox                           0x00007fff28651583 _BlockUntilNextEventMatchingListInModeWithFilter + 70

67  AppKit                              0x00007fff22c13172 _DPSNextEvent + 864

68  AppKit                              0x00007fff22c11945 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1364

69  AppKit                              0x00007fff22c03c69 -[NSApplication run] + 586

70  AppKit                              0x00007fff22bd7e6c NSApplicationMain + 816

71  libdyld.dylib                       0x00007fff2032ff3d start + 1

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread

0   com.apple.AppKit               0x00007fff22fbf2f8 -[NSApplication _crashOnException:] + 347

1   com.apple.AppKit               0x00007fff22fbf007 -[NSApplication reportException:] + 732

2   com.apple.AppKit               0x00007fff23072d20 uncaughtErrorProc + 145

3   com.apple.CoreFoundation       0x00007fff20503f42 __handleUncaughtException + 716

4   libobjc.A.dylib               0x00007fff201c2587 _objc_terminate() + 90

5   libc++abi.dylib               0x00007fff202d7307 std::__terminate(void (*)()) + 8

6   libc++abi.dylib               0x00007fff202d72a9 std::terminate() + 41

7   libdispatch.dylib             0x00007fff2016a81a _dispatch_client_callout + 28

8   libdispatch.dylib             0x00007fff20176b4f _dispatch_main_queue_callback_4CF + 940

9   com.apple.CoreFoundation       0x00007fff2044a5a8 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9

10  com.apple.CoreFoundation       0x00007fff2040c7a2 __CFRunLoopRun + 2755

11  com.apple.CoreFoundation       0x00007fff2040b61c CFRunLoopRunSpecific + 563

12  com.apple.Foundation           0x00007fff2122b1bf -[NSConcreteTask waitUntilExit] + 324

13  com.torusknot.SourceTreeNotMAS 0x000000010bdc2124 0x10bd7a000 + 295204

14  com.torusknot.SourceTreeNotMAS 0x000000010be976a1 0x10bd7a000 + 1169057

15  com.torusknot.SourceTreeNotMAS 0x000000010beb7b48 0x10bd7a000 + 1301320

16  com.torusknot.SourceTreeNotMAS 0x000000010bdb7719 0x10bd7a000 + 251673

17  com.torusknot.SourceTreeNotMAS 0x000000010bedf261 0x10bd7a000 + 1462881

18  com.torusknot.SourceTreeNotMAS 0x000000010bdfcf28 0x10bd7a000 + 536360

19  com.apple.AppKit               0x00007fff234cdb5f NSWindowEndWindowModalSession + 388

20  com.torusknot.SourceTreeNotMAS 0x000000010bdfd9ac 0x10bd7a000 + 539052

21  com.torusknot.SourceTreeNotMAS 0x000000010bdfc260 0x10bd7a000 + 533088

22  com.torusknot.SourceTreeNotMAS 0x000000010bdfc81c 0x10bd7a000 + 534556

23  com.apple.CoreFoundation       0x00007fff204030cd __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12

24  com.apple.CoreFoundation       0x00007fff2049eb1c ___CFXRegistrationPost_block_invoke + 49

25  com.apple.CoreFoundation       0x00007fff2049ea9a _CFXRegistrationPost + 454

26  com.apple.CoreFoundation       0x00007fff203d434e _CFXNotificationPost + 736

27  com.apple.Foundation           0x00007fff21144bb8 -[NSNotificationCenter postNotificationName:object:userInfo:] + 59

28  com.torusknot.SourceTreeNotMAS 0x000000010bdc2f77 0x10bd7a000 + 298871

29  com.apple.CoreFoundation       0x00007fff204030cd __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12

30  com.apple.CoreFoundation       0x00007fff2049eb1c ___CFXRegistrationPost_block_invoke + 49

31  com.apple.CoreFoundation       0x00007fff2049ea9a _CFXRegistrationPost + 454

32  com.apple.CoreFoundation       0x00007fff203d434e _CFXNotificationPost + 736

33  com.apple.Foundation           0x00007fff21144bb8 -[NSNotificationCenter postNotificationName:object:userInfo:] + 59

34  com.apple.CoreFoundation       0x00007fff2040d4e2 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12

35  com.apple.CoreFoundation       0x00007fff2040d393 __CFRunLoopDoBlocks + 440

36  com.apple.CoreFoundation       0x00007fff2040c6fc __CFRunLoopRun + 2589

37  com.apple.CoreFoundation       0x00007fff2040b61c CFRunLoopRunSpecific + 563

38  com.apple.HIToolbox           0x00007fff28651a83 RunCurrentEventLoopInMode + 292

39  com.apple.HIToolbox           0x00007fff286517e5 ReceiveNextEventCommon + 587

40  com.apple.HIToolbox           0x00007fff28651583 _BlockUntilNextEventMatchingListInModeWithFilter + 70

41  com.apple.AppKit               0x00007fff22c13172 _DPSNextEvent + 864

42  com.apple.AppKit               0x00007fff22c11945 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1364

43  com.apple.AppKit               0x00007fff22c03c69 -[NSApplication run] + 586

44  com.apple.AppKit               0x00007fff22bd7e6c NSApplicationMain + 816

45  libdyld.dylib                 0x00007fff2032ff3d start + 1

```