# Crashlytics - Stack trace

Crashed: com.apple.main-thread
0  libsystem_kernel.dylib         0xa01c __pthread_kill + 8
1  libsystem_pthread.dylib        0x5680 pthread_kill + 268
2  libsystem_c.dylib              0x75b90 abort + 180
3  libsystem_malloc.dylib         0x26200 malloc_vreport + 908
4  libsystem_malloc.dylib         0x264a8 malloc_zone_error + 104
5  libsystem_malloc.dylib         0x18de0 free_list_checksum_botch + 40
6  libsystem_malloc.dylib         0x45f8 small_free_list_remove_ptr_no_clear + 960
7  libsystem_malloc.dylib         0x4050 small_malloc_from_free_list + 152
8  libsystem_malloc.dylib         0x3950 small_malloc_should_clear + 196
9  libsystem_malloc.dylib         0x1fcc szone_malloc_should_clear + 120
10 libc++abi.dylib                0x1349c operator new(unsigned long) + 52
11 MapboxCoreMaps                 0x314bcc mbgl::RenderTileSource::prepare(mbgl::SourcePrepareParameters const&) + 388
12 MapboxCoreMaps                 0x2da108 mbgl::RenderOrchestrator::createRenderTree(std::__1::shared_ptr<mbgl::UpdateParameters> const&) + 52556
13 MapboxCoreMaps                 0x2f3180 mbgl::Renderer::render(std::__1::shared_ptr<mbgl::UpdateParameters> const&) + 200
14 MapboxCoreMaps                 0x74588 mapbox::maps::MapImpl::Impl::render() + 400
15 MapboxCoreMaps                 0x700dc -[MBMMetalViewDelegate drawInMTKView:] + 536
16 MetalKit                       0x348c <redacted> + 160
17 MapboxMaps                     0xcdb00 MapView.updateFromDisplayLink(displayLink:) + 631 (MapView.swift:631)
18 MapboxMaps                     0xce118 closure #1 in MapView.didMoveToWindow() + 667 (MapView.swift:667)
19 MapboxMaps                     0x7b764 @objc ForwardingDisplayLinkTarget.update(with:) + 12 (ForwardingDispalyLinkTarget.swift:12)
20 QuartzCore                     0x2fa14 <redacted> + 48
21 QuartzCore                     0x32bfc <redacted> + 864
22 QuartzCore                     0x32708 <redacted> + 844
23 QuartzCore                     0xb191c <redacted> + 348
24 UIKitCore                      0xaa468 _UIUpdateSequenceRun + 84
25 UIKitCore                      0xa9b58 schedulerStepScheduledMainSection + 144
26 UIKitCore                      0xa9c14 runloopSourceCallback + 92
27 CoreFoundation                 0x3731c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
28 CoreFoundation                 0x36598 __CFRunLoopDoSource0 + 176
29 CoreFoundation                 0x34d4c __CFRunLoopDoSources0 + 244
30 CoreFoundation                 0x33a88 __CFRunLoopRun + 828
31 CoreFoundation                 0x33668 CFRunLoopRunSpecific + 608
32 GraphicsServices               0x35ec GSEventRunModal + 164
33 UIKitCore                      0x22c294 -[UIApplication _run] + 888
34 UIKitCore                      0x22b8d0 UIApplicationMain + 340
35 bird                           0x679c main + 19 (AppDelegate.swift:19)
36 ???                            0x1b9ea6dcc (Missing)

com.apple.uikit.eventfetch-thread
0  libsystem_kernel.dylib         0x11d8 mach_msg2_trap + 8
1  libsystem_kernel.dylib         0xf70 mach_msg2_internal + 80
2  libsystem_kernel.dylib         0xe88 mach_msg_overwrite + 436
3  libsystem_kernel.dylib         0xcc8 mach_msg + 24
4  CoreFoundation                 0x35d0c __CFRunLoopServiceMachPort + 160
5  CoreFoundation                 0x33c04 __CFRunLoopRun + 1208
6  CoreFoundation                 0x33668 CFRunLoopRunSpecific + 608
7  Foundation                     0x2c54c -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212
8  Foundation                     0x5a27c -[NSRunLoop(NSRunLoop) runUntilDate:] + 64
9  UIKitCore                      0x18dfa8 -[UIEventFetcher threadMain] + 420
10 Foundation                     0xb1184 __NSThread__start__ + 732
11 libsystem_pthread.dylib        0x24d4 _pthread_start + 136
12 libsystem_pthread.dylib        0x1a10 thread_start + 8

Realm notification listener
0  libsystem_kernel.dylib         0xef6c kevent + 8
1  Realm                          0x3d2218 realm::_impl::ExternalCommitHelper::listen() + 156
2  Realm                          0x3d2374 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct>>, realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&, realm::RealmConfig const&)::$_0>>(void*) + 52
3  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
4  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.google.firebase.crashlytics.MachExceptionServer
0  libsystem_kernel.dylib         0x11d8 mach_msg2_trap + 8
1  libsystem_kernel.dylib         0xf70 mach_msg2_internal + 80
2  libsystem_kernel.dylib         0xe88 mach_msg_overwrite + 436
3  libsystem_kernel.dylib         0xcc8 mach_msg + 24
4  FirebaseCrashlytics            0x17da0 FIRCLSMachExceptionServer + 192 (FIRCLSMachException.c:192)
5  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
6  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.apple.NSURLConnectionLoader
0  libsystem_kernel.dylib         0x11d8 mach_msg2_trap + 8
1  libsystem_kernel.dylib         0xf70 mach_msg2_internal + 80
2  libsystem_kernel.dylib         0xe88 mach_msg_overwrite + 436
3  libsystem_kernel.dylib         0xcc8 mach_msg + 24
4  CoreFoundation                 0x35d0c __CFRunLoopServiceMachPort + 160
5  CoreFoundation                 0x33c04 __CFRunLoopRun + 1208
6  CoreFoundation                 0x33668 CFRunLoopRunSpecific + 608
7  CFNetwork                      0x258780 _CFURLStorageSessionCopyIdentifier + 69132
8  Foundation                     0xb1184 __NSThread__start__ + 732
9  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
10 libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.Worker 1
0  libsystem_kernel.dylib         0x1b7c __psynch_cvwait + 8
1  libsystem_pthread.dylib        0xfd4 _pthread_cond_wait + 1228
2  libc++.1.dylib                 0x12f60 std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >) + 100
3  MapboxCommon                   0x71b28 mapbox::common::ThreadedSchedulerBase::getDefaultPriority() + 1360
4  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
5  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.Worker 2
0  libsystem_kernel.dylib         0x1b7c __psynch_cvwait + 8
1  libsystem_pthread.dylib        0xfd4 _pthread_cond_wait + 1228
2  libc++.1.dylib                 0x12f60 std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >) + 100
3  MapboxCommon                   0x71b28 mapbox::common::ThreadedSchedulerBase::getDefaultPriority() + 1360
4  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
5  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.Worker 3
0  libsystem_kernel.dylib         0x1c58 __ulock_wait + 8
1  libsystem_platform.dylib       0x32dc _os_unfair_lock_lock_slow + 176
2  libsystem_malloc.dylib         0xa254 free_small + 156
3  MapboxCoreMaps                 0x23b6b0 mbgl::SymbolBucket::Buffer::~Buffer() + 320
4  MapboxCoreMaps                 0x23b374 mbgl::SymbolBucket::~SymbolBucket() + 236
5  MapboxCoreMaps                 0x52ca6c std::__1::unordered_map<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>, mbgl::LayerRenderData, std::__1::hash<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>, std::__1::equal_to<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>, std::__1::allocator<std::__1::pair<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>> const, mbgl::LayerRenderData>>>::~unordered_map() + 172
6  MapboxCoreMaps                 0x534674 mbgl::internal::DeleteTask<mbgl::GeometryTile::LayoutResult>::deleteIfNeeded() + 216
7  MapboxCommon                   0x71d28 mapbox::common::ThreadedSchedulerBase::getDefaultPriority() + 1872
8  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
9  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.Worker 4
0  libsystem_kernel.dylib         0x1b7c __psynch_cvwait + 8
1  libsystem_pthread.dylib        0xfd4 _pthread_cond_wait + 1228
2  libc++.1.dylib                 0x12f60 std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >) + 100
3  MapboxCommon                   0x71b28 mapbox::common::ThreadedSchedulerBase::getDefaultPriority() + 1360
4  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
5  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.location.sharedRunloop
0  libsystem_kernel.dylib         0x11d8 mach_msg2_trap + 8
1  libsystem_kernel.dylib         0xf70 mach_msg2_internal + 80
2  libsystem_kernel.dylib         0xe88 mach_msg_overwrite + 436
3  libsystem_kernel.dylib         0xcc8 mach_msg + 24
4  CoreFoundation                 0x35d0c __CFRunLoopServiceMachPort + 160
5  CoreFoundation                 0x33c04 __CFRunLoopRun + 1208
6  CoreFoundation                 0x33668 CFRunLoopRunSpecific + 608
7  CoreFoundation                 0x333cc CFRunLoopRun + 64
8  MapboxCommon                   0xddbb0 mapbox::common::location::LocationServiceFactory::locationService() + 66844
9  Foundation                     0xb1184 __NSThread__start__ + 732
10 libsystem_pthread.dylib        0x24d4 _pthread_start + 136
11 libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.AssetFileSource
0  libsystem_kernel.dylib         0x1b7c __psynch_cvwait + 8
1  libsystem_pthread.dylib        0xfd4 _pthread_cond_wait + 1228
2  libc++.1.dylib                 0x12ecc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3  MapboxCommon                   0x71af8 mapbox::common::ThreadedSchedulerBase::getDefaultPriority() + 1312
4  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
5  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.TileStoreFileSource
0  libsystem_kernel.dylib         0x1b7c __psynch_cvwait + 8
1  libsystem_pthread.dylib        0xfd4 _pthread_cond_wait + 1228
2  libc++.1.dylib                 0x12ecc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3  MapboxCommon                   0x71af8 mapbox::common::ThreadedSchedulerBase::getDefaultPriority() + 1312
4  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
5  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.LocalFileSource
0  libsystem_kernel.dylib         0x1b7c __psynch_cvwait + 8
1  libsystem_pthread.dylib        0xfd4 _pthread_cond_wait + 1228
2  libc++.1.dylib                 0x12ecc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3  MapboxCommon                   0x71af8 mapbox::common::ThreadedSchedulerBase::getDefaultPriority() + 1312
4  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
5  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.OnlineFileSource
0  libsystem_kernel.dylib         0x1b7c __psynch_cvwait + 8
1  libsystem_pthread.dylib        0xfd4 _pthread_cond_wait + 1228
2  libc++.1.dylib                 0x12f60 std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >) + 100
3  MapboxCommon                   0x71b28 mapbox::common::ThreadedSchedulerBase::getDefaultPriority() + 1360
4  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
5  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.ResourceLoaderThread
0  libsystem_kernel.dylib         0x1b7c __psynch_cvwait + 8
1  libsystem_pthread.dylib        0xfd4 _pthread_cond_wait + 1228
2  libc++.1.dylib                 0x12ecc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3  MapboxCommon                   0x71af8 mapbox::common::ThreadedSchedulerBase::getDefaultPriority() + 1312
4  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
5  libsystem_pthread.dylib        0x1a10 thread_start + 8

com.mapbox.common.Logger
0  libsystem_kernel.dylib         0x1b7c __psynch_cvwait + 8
1  libsystem_pthread.dylib        0xfd4 _pthread_cond_wait + 1228
2  libc++.1.dylib                 0x12ecc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3  MapboxCommon                   0x71af8 mapbox::common::ThreadedSchedulerBase::getDefaultPriority() + 1312
4  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
5  libsystem_pthread.dylib        0x1a10 thread_start + 8

Thread
0  libsystem_kernel.dylib         0x9730 __workq_kernreturn + 8
1  libsystem_pthread.dylib        0x19b0 _pthread_wqthread + 364
2  libsystem_pthread.dylib        0x1a04 start_wqthread + 8

Thread
0  libsystem_kernel.dylib         0x9730 __workq_kernreturn + 8
1  libsystem_pthread.dylib        0x19b0 _pthread_wqthread + 364
2  libsystem_pthread.dylib        0x1a04 start_wqthread + 8

Thread
0  libsystem_kernel.dylib         0x9730 __workq_kernreturn + 8
1  libsystem_pthread.dylib        0x19b0 _pthread_wqthread + 364
2  libsystem_pthread.dylib        0x1a04 start_wqthread + 8

Thread
0  libsystem_kernel.dylib         0x9730 __workq_kernreturn + 8
1  libsystem_pthread.dylib        0x19b0 _pthread_wqthread + 364
2  libsystem_pthread.dylib        0x1a04 start_wqthread + 8

Thread
0  libsystem_pthread.dylib        0x19fc start_wqthread + 438

JavaScriptCore libpas scavenger
0  libsystem_kernel.dylib         0x1b7c __psynch_cvwait + 8
1  libsystem_pthread.dylib        0xfd4 _pthread_cond_wait + 1228
2  JavaScriptCore                 0x15a4c50 scavenger_thread_main + 1512
3  libsystem_pthread.dylib        0x24d4 _pthread_start + 136
4  libsystem_pthread.dylib        0x1a10 thread_start + 8

Thread
0  libsystem_pthread.dylib        0x19fc start_wqthread + 438