I've this random crash in live app. I know how to fix it. I want to know how to find out offending code as the crashlytics log doesn't show any code in my app. Is this crashlytics crash?
Since it's random crash I can't debug it.
Any pointer to find out offending code will be appreciated.
Fatal Exception: NSInternalInconsistencyException
Modifications to the layout engine must not be performed from a background thread after it has been accessed from the main thread.
Fatal Exception: NSInternalInconsistencyException
0 CoreFoundation 0x196676a48 __exceptionPreprocess
1 libobjc.A.dylib 0x19639dfa4 objc_exception_throw
2 Foundation 0x196b4cf08 -[NSISEngine tryToOptimizeReturningMutuallyExclusiveConstraints]
3 Foundation 0x196957d34 -[NSISEngine _optimizeWithoutRebuilding]
4 Foundation 0x196957c4c -[NSISEngine optimize]
5 Foundation 0x1969578c0 -[NSISEngine performPendingChangeNotifications]
6 UIKitCore 0x19ab6c9e0 -[UIView(Hierarchy) layoutSubviews]
7 UIKitCore 0x19ab7f3d0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:]
8 QuartzCore 0x19d0e27dc -[CALayer layoutSublayers]
9 QuartzCore 0x19d0e8958 CA::Layer::layout_if_needed(CA::Transaction*)
10 QuartzCore 0x19d0f3578 CA::Layer::layout_and_display_if_needed(CA::Transaction*)
11 QuartzCore 0x19d03bf1c CA::Context::commit_transaction(CA::Transaction*, double)
12 QuartzCore 0x19d065c08 CA::Transaction::commit()
13 QuartzCore 0x19d066b8c CA::Transaction::release_thread(void*)
14 libsystem_pthread.dylib 0x196394fb0 _pthread_tsd_cleanup
15 libsystem_pthread.dylib 0x196391de8 _pthread_exit
16 libsystem_pthread.dylib 0x196392e7c _pthread_wqthread_legacy_worker_wrap
17 libsystem_pthread.dylib 0x196392c18 _pthread_wqthread
18 libsystem_pthread.dylib 0x196395760 start_wqthread
Crashed: com.twitter.crashlytics.ios.exception
EXC_BREAKPOINT 0x00000001962dd8e0
Crashed: com.twitter.crashlytics.ios.exception
0 myApp 0x10101f028 CLSProcessRecordAllThreads + 376 (CLSProcess.c:376)
1 myApp 0x10101f410 CLSProcessRecordAllThreads + 407 (CLSProcess.c:407)
2 myApp 0x10100f114 CLSHandler + 26 (CLSHandler.m:26)
3 myApp 0x10101d63c __CLSExceptionRecord_block_invoke + 198 (CLSException.mm:198)
4 libdispatch.dylib 0x196343184 _dispatch_client_callout + 16
5 libdispatch.dylib 0x1962f5c04 _dispatch_lane_barrier_sync_invoke_and_complete + 56
6 myApp 0x10101d0e4 CLSExceptionRecord + 205 (CLSException.mm:205)
7 myApp 0x10101cf18 CLSExceptionRecordNSException + 102 (CLSException.mm:102)
8 myApp 0x10101cb3c CLSTerminateHandler() + 258 (CLSException.mm:258)
9 libc++abi.dylib 0x196443304 std::__terminate(void (*)()) + 16
10 libc++abi.dylib 0x196442c58 __cxa_get_exception_ptr + 30
11 libc++abi.dylib 0x196442c18 __cxxabiv1::exception_cleanup_func(_Unwind_Reason_Code, _Unwind_Exception*) + 122
12 libobjc.A.dylib 0x19639e0d0 _objc_exception_destructor(void*) + 354
13 Foundation 0x196b4cf08 -[NSISEngine tryToOptimizeReturningMutuallyExclusiveConstraints] + 318
14 Foundation 0x196957d34 -[NSISEngine _optimizeWithoutRebuilding] + 68
15 Foundation 0x196957c4c -[NSISEngine optimize] + 112
16 Foundation 0x1969578c0 -[NSISEngine performPendingChangeNotifications] + 112
17 UIKitCore 0x19ab6c9e0 -[UIView(Hierarchy) layoutSubviews] + 308
18 UIKitCore 0x19ab7f3d0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2140
19 QuartzCore 0x19d0e27dc -[CALayer layoutSublayers] + 284
20 QuartzCore 0x19d0e8958 CA::Layer::layout_if_needed(CA::Transaction*) + 480
21 QuartzCore 0x19d0f3578 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 136
22 QuartzCore 0x19d03bf1c CA::Context::commit_transaction(CA::Transaction*, double) + 304
23 QuartzCore 0x19d065c08 CA::Transaction::commit() + 676
24 QuartzCore 0x19d066b8c CA::Transaction::release_thread(void*) + 228
25 libsystem_pthread.dylib 0x196394fb0 _pthread_tsd_cleanup + 580
26 libsystem_pthread.dylib 0x196391de8 _pthread_exit + 80
27 libsystem_pthread.dylib 0x196392e7c _pthread_wqthread_legacy_worker_wrap + 94
28 libsystem_pthread.dylib 0x196392c18 _pthread_wqthread + 420
29 libsystem_pthread.dylib 0x196395760 start_wqthread + 8
I've seen a similar stacktrace on crashes that come from Ads SDKs. Do you have and ads in your app? or WKWebviews? If yes, try to disable them and check if the crash still happens.
Related
Fatal Exception: NSInternalInconsistencyException
Modifications to the layout engine must not be performed from a background thread after it has been accessed from the main thread.
I am getting these occasional crashes in Firebase Crashlytics which I can't fathom out or reproduce (I'm new to debugging). Here is some of the info logged in Crashlytics but I can't see anything that looks familiar or that points to where its happening.
I'm guessing that something has happened in the background thread that shouldn't have but I have no idea where this is occurring in the app, hence I have not included any code.
Is there anything hidden in this list that I am missing that may give more of a clue? There are more threads listed in Crashlytics if needed but not much is in them.
Thanks in advance.
Fatal Exception: NSInternalInconsistencyException
0 CoreFoundation 0xa248 __exceptionPreprocess
1 libobjc.A.dylib 0x17a68 objc_exception_throw
2 CoreAutoLayout 0xde84 NSISLinExpReplaceVarWithVarPlusDelta
3 CoreAutoLayout 0x4e60 -[NSISEngine withBehaviors:performModifications:]
4 UIKitCore 0xac03c __57-[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:]_block_invoke
5 UIKitCore 0xd4544 -[UIView(AdditionalLayoutSupport) _switchToLayoutEngine:]
6 UIKitCore 0xd4154 __45-[UIView(Hierarchy) _postMovedFromSuperview:]_block_invoke
7 UIKitCore 0x1022750 -[UIView _postMovedFromSuperview:]
8 UIKitCore 0x1ed38 -[UIView(Internal) _addSubview:positioned:relativeTo:]
9 UIKitCore 0x508b88 -[_UITextLayoutCanvasView textViewportLayoutController:configureRenderingSurfaceForTextLayoutFragment:]
10 UIFoundation 0xb299c __48-[NSTextViewportLayoutController layoutViewport]_block_invoke_4
11 UIFoundation 0x5f720 __80-[NSTextLayoutManager enumerateViewportElementsFromLocation:options:usingBlock:]_block_invoke
12 UIFoundation 0x36ea8 __83-[NSTextLayoutManager enumerateTextLayoutFragmentsFromLocation:options:usingBlock:]_block_invoke_2
13 CoreFoundation 0xa760 __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__
14 CoreFoundation 0x378ec -[__NSSingleObjectArrayI enumerateObjectsWithOptions:usingBlock:]
15 UIFoundation 0x36b78 __83-[NSTextLayoutManager enumerateTextLayoutFragmentsFromLocation:options:usingBlock:]_block_invoke
16 UIFoundation 0x20210 -[NSTextLayoutManager enumerateTextLayoutFragmentsFromLocation:options:usingBlock:]
17 UIFoundation 0x1ff70 -[NSTextLayoutManager enumerateViewportElementsFromLocation:options:usingBlock:]
18 UIFoundation 0x1fa88 -[NSTextViewportLayoutController layoutViewport]
19 UIKitCore 0x316d0 +[UIView(Animation) performWithoutAnimation:]
20 UIKitCore 0x8af4 -[_UITextLayoutCanvasView layoutSubviews]
21 UIKitCore 0x4cec -[UIView(CALayerDelegate) layoutSublayersOfLayer:]
22 QuartzCore 0xa4e8 CA::Layer::layout_if_needed(CA::Transaction*)
23 QuartzCore 0x1db9c CA::Layer::layout_and_display_if_needed(CA::Transaction*)
24 QuartzCore 0x2f098 CA::Context::commit_transaction(CA::Transaction*, double, double*)
25 QuartzCore 0x663c4 CA::Transaction::commit()
26 QuartzCore 0xb6658 CA::Transaction::release_thread(void*)
27 libsystem_pthread.dylib 0x1bd8 _pthread_tsd_cleanup
28 libsystem_pthread.dylib 0x4674 _pthread_exit
29 libsystem_pthread.dylib 0x10e0 pthread_main_np
30 libsystem_pthread.dylib 0xe80 _pthread_wqthread
31 libsystem_pthread.dylib 0xb98 start_wqthread
com.apple.main-thread
0 libsystem_kernel.dylib 0xb48 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x13008 mach_msg2_internal + 80
2 libsystem_kernel.dylib 0x13248 mach_msg_overwrite + 388
3 libsystem_kernel.dylib 0x108c mach_msg + 24
4 CoreFoundation 0x7ae00 __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x7c044 __CFRunLoopRun + 1232
6 CoreFoundation 0x811e4 CFRunLoopRunSpecific + 612
7 GraphicsServices 0x1368 GSEventRunModal + 164
8 UIKitCore 0x3a2d88 -[UIApplication _run] + 888
9 UIKitCore 0x3a29ec UIApplicationMain + 340
10 SwiftUI 0x1dace8 OUTLINED_FUNCTION_895 + 2424
11 SwiftUI 0x137c24 block_copy_helper.1 + 388
12 SwiftUI 0x120b44 OUTLINED_FUNCTION_901 + 2804
13 MyApp 0x496c main + 4372253036 (<compiler-generated>:4372253036)
14 ??? 0x1d3e95948 (Missing)
My app works well the 99% of times but 1% it's crashing after opening the camera, we are getting a random crash. This is the stacktrace from Crashlytics:
Crashed: com.apple.camera.avcapturesession
0 libobjc.A.dylib 0x194d8fbd0 objc_msgSend + 16
1 UIKit 0x1890df21c -[UIViewAnimationState animationForLayer:forKey:forView:] + 712
2 UIKit 0x188e55724 -[UIViewAnimationState actionForLayer:forKey:forView:] + 44
3 UIKit 0x188e19f44 -[UIView(CALayerDelegate) actionForLayer:forKey:] + 140
4 QuartzCore 0x188774e88 -[CALayer actionForKey:] + 104
5 QuartzCore 0x18876a86c actionForKey(CALayer*, CA::Transaction*, NSString*) + 100
6 QuartzCore 0x18876a6d8 CA::Layer::begin_change(CA::Transaction*, unsigned int, objc_object*&) + 176
7 QuartzCore 0x18876d6a0 CA::Layer::setter(unsigned int, _CAValueType, void const*) + 156
8 QuartzCore 0x188774e14 -[CALayer setOpacity:] + 48
9 UIKit 0x188e19a5c -[UIView(Rendering) setAlpha:] + 104
10 corporate 0x1005a3e5c -[GSDK_GTMReadMonitorInputStream .cxx_destruct]
11 corporate 0x1005a4398 -[GSDK_GTMReadMonitorInputStream .cxx_destruct]
12 CoreFoundation 0x184614ae4 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 20
13 CoreFoundation 0x184553220 _CFXNotificationPost + 2060
14 Foundation 0x185452cc0 -[NSNotificationCenter postNotificationName:object:userInfo:] + 72
15 AVFoundation 0x182efd9c4 -[AVCaptureSession _setRunning:] + 312
16 CameraKit 0x18aac1adc __38-[CAMCaptureController _startPreview:]_block_invoke829
17 libdispatch.dylib 0x1953c13ac _dispatch_call_block_and_release + 24
18 libdispatch.dylib 0x1953c136c _dispatch_client_callout + 16
19 libdispatch.dylib 0x1953cb4c0 _dispatch_queue_drain + 1216
20 libdispatch.dylib 0x1953c4474 _dispatch_queue_invoke + 132
21 libdispatch.dylib 0x1953cd224 _dispatch_root_queue_drain + 664
22 libdispatch.dylib 0x1953ce75c _dispatch_worker_thread3 + 108
23 libsystem_pthread.dylib 0x19559d2e4 _pthread_wqthread + 816
24 libsystem_pthread.dylib 0x19559cfa8 start_wqthread + 4
I don't fully understand where this crash is coming from but I found that I could be related to GoogleNetworkingUtilities.
try this
Are you certain that you aren't doing anything that would effect any UI elements in a background thread?
If you're on iOS 10 you need to add Privacy - Camera Usage Description to your Info.plist file
Many of my users get the crash describes in the below stack trace.
As you can read it seems to happen at the application launch and it does not involved any of our methods if we did not take into account the standard main call at line 28.
I do not know how to fix this bug as I do not manage to reproduce it and the below stack trace is not helpful for me.
The bug appears only on iOS9 (93% iOS9.2, 4% iOS 9.1.0, etc..)
Maybe someone know what to do in this case?
Thread : Crashed: com.apple.main-thread
0 libobjc.A.dylib 0x180911bd0 objc_msgSend + 16
1 Foundation 0x181b7b5f4 -[NSObject(NSKeyValueObservingPrivate) _changeValueForKey:key:key:usingBlock:] + 372
2 Foundation 0x181c2430c _NSSetPointValueAndNotify + 284
3 UIKit 0x18608e798 -[UIView(Geometry) _applyISEngineLayoutValues] + 656
4 UIKit 0x185f9b458 -[UIView(Geometry) _resizeWithOldSuperviewSize:] + 136
5 CoreFoundation 0x181188370 __53-[__NSArrayM enumerateObjectsWithOptions:usingBlock:]_block_invoke + 132
6 CoreFoundation 0x181188268 -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 308
7 UIKit 0x185f89f8c -[UIView(Geometry) resizeSubviewsWithOldSize:] + 148
8 UIKit 0x18608e8e0 -[UIView(AdditionalLayoutSupport) _is_layout] + 128
9 UIKit 0x1862931f0 -[UIView(Hierarchy) _updateConstraintsAsNecessaryAndApplyLayoutFromEngine] + 756
10 UIKit 0x185f7f778 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 656
11 QuartzCore 0x18398eb2c -[CALayer layoutSublayers] + 148
12 QuartzCore 0x183989738 CA::Layer::layout_if_needed(CA::Transaction*) + 292
13 QuartzCore 0x1839895f8 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 32
14 QuartzCore 0x183988c94 CA::Context::commit_transaction(CA::Transaction*) + 252
15 QuartzCore 0x1839889dc CA::Transaction::commit() + 512
16 QuartzCore 0x1839820cc CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 80
17 CoreFoundation 0x181248588 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
18 CoreFoundation 0x18124632c __CFRunLoopDoObservers + 372
19 CoreFoundation 0x18124675c __CFRunLoopRun + 928
20 CoreFoundation 0x181175680 CFRunLoopRunSpecific + 384
21 GraphicsServices 0x182684088 GSEventRunModal + 180
22 UIKit 0x185fecd90 UIApplicationMain + 204
23 once 0x1000f0f00 main (main.m:14)
24 libdispatch.dylib 0x180d168b8 (Missing)
As an additional information I'm using AFNetworking. Here is the AFNetworking thread stack trace that does not crash:
Thread : AFNetworking
0 libsystem_kernel.dylib 0x180e194bc mach_msg_trap + 8
1 libsystem_kernel.dylib 0x180e19338 mach_msg + 72
2 CoreFoundation 0x181248ac0 __CFRunLoopServiceMachPort + 196
3 CoreFoundation 0x1812467c4 __CFRunLoopRun + 1032
4 CoreFoundation 0x181175680 CFRunLoopRunSpecific + 384
5 Foundation 0x181b6d21c -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 308
6 Foundation 0x181bc2874 -[NSRunLoop(NSRunLoop) run] + 88
7 once 0x1001ddf9c +[AFURLConnectionOperation networkRequestThreadEntryPoint:] (AFURLConnectionOperation.m:169)
8 Foundation 0x181c53c40 __NSThread__start__ + 1000
9 libsystem_pthread.dylib 0x180efbb28 _pthread_body + 156
Maybe it could help.
Thank you for your help!
I found another entry in SO with a stack that's eerily similar to yours. There was a resolution involving the removal of a setTranslatesAutoresizingMaskIntoConstraints:NO in a subview.
issue with reentering of view with [UIView(Geometry) _applyISEngineLayoutValues] in iOS8 but not iOS7
At application startup, this could only be your main view controller or the launchScreen if you have a xib/storyboard for it.
I'm getting crashes in a user's device (I see it in Crashalytics)
The thing is that the core dump is all iOS internal stuff.
How can I see what peice of my code originated the draw that made the crash?
Terminating app due to an uncaught exception 'NSInvalidArgumentException', reason: '-[NSAttributeDictionary textContainerForAttributedString:containerSize:lineFragmentPadding:]: unrecognized selector sent to instance 0x15dc7f20'
0 CoreFoundation 0x30065f23 +154
1 libobjc.A.dylib 0x3a7fcce7 objc_exception_throw+38
2 CoreFoundation 0x30069837 +202
3 CoreFoundation 0x30068137 +706
4 CoreFoundation 0x2ffb7098 _CF_forwarding_prep_0+24
5 UIFoundation 0x37ce5915 +12252
6 UIFoundation 0x37ce2863 +150
7 UIKit 0x328ae2c9 +4224
8 UIKit 0x32914709 +500
9 UIKit 0x3291450b +78
10 UIKit 0x329144a9 +372
11 QuartzCore 0x32540189 +100
12 QuartzCore 0x32529c5b +1858
13 QuartzCore 0x32605c1d +52
14 QuartzCore 0x3252950b +82
15 QuartzCore 0x325291bf +1118
16 QuartzCore 0x3250cd41 +208
17 QuartzCore 0x3250c9d9 +24
18 QuartzCore 0x3250c3e5 +228
19 QuartzCore 0x3250c1f7 +314
20 QuartzCore 0x325398e3 +162
21 libsystem_pthread.dylib 0x3ae176d1 +164
22 libsystem_pthread.dylib 0x3ae17453 +86
23 libsystem_pthread.dylib 0x3ae181b9 pthread_exit+28
24 Foundation 0x309a2703 +10
25 Foundation 0x30a4ea2d +1092
26 libsystem_pthread.dylib 0x3ae18959 +140
27 libsystem_pthread.dylib 0x3ae188cb _pthread_start+102
** Edit **
A different thread that crashed in this run (which again gives me no hints to the original point in my code)
Thread : Crashed: Thread
0 libsystem_c.dylib 0x3ad6206a __abort + 101
1 libsystem_c.dylib 0x3ad6206b __abort + 102
2 libsystem_c.dylib 0x3ad62005 __abort
3 libc++abi.dylib 0x3a1b098f abort_message + 74
4 libc++abi.dylib 0x3a1c96e7 default_terminate_handler() + 254
5 libobjc.A.dylib 0x3a7fcf7d _objc_terminate() + 192
6 libc++abi.dylib 0x3a1c71b3 std::__terminate(void (*)()) + 78
7 libc++abi.dylib 0x3a1c6a09 __cxxabiv1::exception_cleanup_func(_Unwind_Reason_Code, _Unwind_Exception*)
8 libobjc.A.dylib 0x3a7fcdbb objc_exception_throw + 250
9 CoreFoundation 0x30069837 -[NSObject(NSObject) doesNotRecognizeSelector:] + 202
10 CoreFoundation 0x30068137 ___forwarding___ + 706
11 CoreFoundation 0x2ffb7098 _CF_forwarding_prep_0 + 24
12 UIFoundation 0x37ce5915 __NSStringDrawingEngine + 12252
13 UIFoundation 0x37ce2863 -[NSString(NSExtendedStringDrawing) drawWithRect:options:attributes:context:] + 150
14 UIKit 0x328ae2c9 -[UILabel _drawTextInRect:baselineCalculationOnly:] + 4224
15 UIKit 0x32914709 -[UILabel drawTextInRect:] + 500
16 UIKit 0x3291450b -[UILabel drawRect:] + 78
17 UIKit 0x329144a9 -[UIView(CALayerDelegate) drawLayer:inContext:] + 372
18 QuartzCore 0x32540189 -[CALayer drawInContext:] + 100
19 QuartzCore 0x32529c5b CABackingStoreUpdate_ + 1858
20 QuartzCore 0x32605c1d ___ZN2CA5Layer8display_Ev_block_invoke + 52
21 QuartzCore 0x3252950b x_blame_allocations + 82
22 QuartzCore 0x325291bf CA::Layer::display_() + 1118
23 QuartzCore 0x3250cd41 CA::Layer::display_if_needed(CA::Transaction*) + 208
24 QuartzCore 0x3250c9d9 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 24
25 QuartzCore 0x3250c3e5 CA::Context::commit_transaction(CA::Transaction*) + 228
26 QuartzCore 0x3250c1f7 CA::Transaction::commit() + 314
27 QuartzCore 0x325398e3 CA::Transaction::release_thread(void*) + 162
28 libsystem_pthread.dylib 0x3ae176d1 _pthread_tsd_cleanup + 164
29 libsystem_pthread.dylib 0x3ae17453 _pthread_exit + 86
30 libsystem_pthread.dylib 0x3ae181b9 pthread_exit + 28
31 Foundation 0x309a2703 +[NSThread exit] + 10
32 Foundation 0x30a4ea2d __NSThread__main__ + 1092
33 libsystem_pthread.dylib 0x3ae18959 _pthread_body + 140
34 libsystem_pthread.dylib 0x3ae188cb _pthread_start + 102
What's unusual is that you are only getting this crash in production and not in development. That's probably due to poor testing, however another possible reason is making assumptions about the type of data you are working with, and this data is difficult to replicate in development.
JSON is a common and classic example of this, where a server can provide a string response that is magically turned into a hierarchy of objects. The code then assumes the top-level objects is a dictionary or array and starts calling methods which are unrecognised.
In your case though, you are not testing properly before release.
(this doesn't really provide an answer, but I feel you have everything you need to provide yourself with the answer, if you can be bothered to use it).
sometimes I have a following warnings in my app and then app freezes and stops working.
I don't know why does this happen. Does anyone can help me?
> <Warning>: CoreAnimation: warning, deleted thread with uncommitted CATransaction; created by:
0 QuartzCore 0x32f303b3 <redacted> + 266
1 QuartzCore 0x32f30269 <redacted> + 224
2 QuartzCore 0x32f308c7 <redacted> + 30
3 QuartzCore 0x32f33bf3 <redacted> + 182
4 QuartzCore 0x32f8b985 <redacted> + 36
5 UIKit 0x3383ec57 <redacted> + 30
6 UIKit 0x334eca33 <redacted> + 114
7 UIKit 0x33413aab <redacted> + 246
8 UIKit 0x3383a6a1 <redacted> + 160
9 Program_TV_Pro 0x00017b3b -[MainMenuViewController grabURLInBackgroundForEntryFromAppDelegate] + 1166
10 Program_TV_Pro 0x000180a3 __49-[MainMenuViewController contextChannelsChanged:]_block_invoke + 138
11 libdispatch.dylib 0x3b800d1b <redacted> + 10
12 libdispatch.dylib 0x3b807d71 <redacted> + 220
13 libdispatch.dylib 0x3b807f59 <redacted> + 56
14 libsystem_pthread.dylib 0x3b942dbf _pthread_wqthread + 298
15 libsystem_pthread.dylib 0x3b942c84 start_wqthread + 8
and warning at another time:
CoreAnimation: warning, deleted thread with uncommitted CATransaction; created by:
0 QuartzCore 0x32f303b3 <redacted> + 266
1 QuartzCore 0x32f30269 <redacted> + 224
2 QuartzCore 0x32f31871 <redacted> + 24
3 QuartzCore 0x32f3207f <redacted> + 130
4 UIKit 0x3338a3d7 <redacted> + 1562
5 Program_TV_Pro 0x00115c2b -[ReplaysTableViewController downloadReplays] + 346
6 Program_TV_Pro 0x00113cbb __41-[ReplaysTableViewController viewDidLoad]_block_invoke52 + 46
7 libdispatch.dylib 0x3b800d1b <redacted> + 10
8 libdispatch.dylib 0x3b807d71 <redacted> + 220
9 libdispatch.dylib 0x3b807f59 <redacted> + 56
10 libsystem_pthread.dylib 0x3b942dbf _pthread_wqthread + 298
11 libsystem_pthread.dylib 0x3b942c84 start_wqthread + 8