I am getting the following error on the crashanalytics dashboard
Fatal Exception: std::__1::system_error
mutex lock failed: Invalid argument
Crashed: io.flutter.1.ui
0 FirebaseCrashlytics 0x1c9b4 FIRCLSProcessRecordAllThreads + 180
1 FirebaseCrashlytics 0x1cd94 FIRCLSProcessRecordAllThreads + 1172
2 FirebaseCrashlytics 0x15b98 FIRCLSHandler + 48
3 FirebaseCrashlytics 0x10018 __FIRCLSExceptionRecord_block_invoke + 92
4 libdispatch.dylib 0x3950 _dispatch_client_callout + 20
5 libdispatch.dylib 0x12a70 _dispatch_lane_barrier_sync_invoke_and_complete + 56
6 FirebaseCrashlytics 0xf79c FIRCLSExceptionRecord + 212
7 FirebaseCrashlytics 0xf430 FIRCLSTerminateHandler() + 588
8 libc++abi.dylib 0x12f58 std::__terminate(void (*)()) + 20
9 libc++abi.dylib 0x15efc __cxa_rethrow + 148
10 libobjc.A.dylib 0x17e8c objc_exception_rethrow + 44
11 CoreFoundation 0x1f4b4 CFRunLoopRunSpecific + 836
12 Flutter 0x2f0f74 (Missing)
13 Flutter 0x2f0788 (Missing)
14 libsystem_pthread.dylib 0x1a60 _pthread_start + 148
15 libsystem_pthread.dylib 0xf5c thread_start + 8
com.apple.main-thread
0 libdyld.dylib 0x1b76c dyld3::MachOFile::isArch(char const*) const + 72
1 libdyld.dylib 0x1158c dyld3::Reaper::runTerminators(dyld3::LoadedImage const&) + 44
2 libdyld.dylib 0x1158c dyld3::Reaper::runTerminators(dyld3::LoadedImage const&) + 44
3 libdyld.dylib 0x11874 dyld3::AllImages::runAllStaticTerminators() + 168
4 libsystem_c.dylib 0x58270 __cxa_finalize_ranges + 408
5 libsystem_c.dylib 0x585c4 exit + 28
6 UIKitCore 0xbd62f0 -[UIApplication terminateWithSuccess] + 502
7 UIKitCore 0xbe7c98 -[UIApplication _updateStateRestorationArchiveForBackgroundEvent:saveState:exitIfCouldNotRestoreState:updateSnapshot:windowScene:] + 180
8 UIKitCore 0xbe7564 __91-[UIApplication _handleNonLaunchSpecificActions:forScene:withTransitionContext:completion:]_block_invoke_2.3212 + 160
9 libdispatch.dylib 0x2a84 _dispatch_call_block_and_release + 32
10 libdispatch.dylib 0x481c _dispatch_client_callout + 20
11 libdispatch.dylib 0x12c70 _dispatch_main_queue_callback_4CF + 884
12 CoreFoundation 0xa3340 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 16
13 CoreFoundation 0x9d218 __CFRunLoopRun + 2524
14 CoreFoundation 0x9c308 CFRunLoopRunSpecific + 600
15 GraphicsServices 0x3734 GSEventRunModal + 164
16 UIKitCore 0xbca75c -[UIApplication _run] + 1072
17 UIKitCore 0xbcffcc UIApplicationMain + 168
18 Runner 0x712c main + 5 (AppDelegate.swift:5)
19 libdyld.dylib 0x1cf8 start + 4
Thread
0 libsystem_kernel.dylib 0x2a0a4 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x37f0 _pthread_wqthread + 352
2 libsystem_pthread.dylib 0xa74c start_wqthread + 8
Thread
0 libsystem_kernel.dylib 0x2a0a4 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x37f0 _pthread_wqthread + 352
2 libsystem_pthread.dylib 0xa74c start_wqthread + 8
com.apple.mobileassetd.v2.maxpcmanager.state
0 libsystem_kernel.dylib 0x44fc mach_msg_trap + 8
1 libsystem_kernel.dylib 0x3884 mach_msg + 76
2 libdispatch.dylib 0x1e280 _dispatch_mach_send_and_wait_for_reply + 520
3 libdispatch.dylib 0x1e64c dispatch_mach_send_with_result_and_wait_for_reply + 56
4 libxpc.dylib 0xde30 xpc_connection_send_message_with_reply_sync + 240
5 MobileAsset 0x10664 __25-[MAXpcManager sendSync:]_block_invoke + 124
6 libdispatch.dylib 0x481c _dispatch_client_callout + 20
7 libdispatch.dylib 0x13910 _dispatch_lane_barrier_sync_invoke_and_complete + 60
8 MobileAsset 0x105a4 -[MAXpcManager sendSync:] + 192
9 MobileAsset 0xd990 -[MAAssetQuery queryMetaDataSync] + 708
10 DataDeliveryServices 0x11cac -[DDSMobileAssetv2Provider performAssetsForQuery:errorPtr:]
11 DataDeliveryServices 0x11a9c -[DDSMobileAssetv2Provider assetsForQuery:errorPtr:]
12 DataDeliveryServices 0x302c -[DDSAssetCenter assetsForQuery:error:]
13 LinguisticData 0x4a28 (Missing)
14 LinguisticData 0x3680 (Missing)
15 LinguisticData 0x5170 LDEnumerateAssetDataItems + 304
16 ProofReader 0x90e4 -[AppleSpell(Lexicon) enumerateAssetDataItemsForLocale:withBlock:] + 104
17 ProofReader 0xa344 -[AppleSpell(LanguageModeling) assetDataBundleURLsForLanguage:] + 184
18 ProofReader 0xd8b4 __37-[AppleSpell dataBundlesForLanguage:]_block_invoke.40 + 52
19 libdispatch.dylib 0x2a84 _dispatch_call_block_and_release + 32
20 libdispatch.dylib 0x481c _dispatch_client_callout + 20
21 libdispatch.dylib 0x1610c _dispatch_root_queue_drain + 688
22 libdispatch.dylib 0x167d8 _dispatch_worker_thread2 + 112
23 libsystem_pthread.dylib 0x3768 _pthread_wqthread + 216
24 libsystem_pthread.dylib 0xa74c start_wqthread + 8
Thread
0 libsystem_pthread.dylib 0xa744 start_wqthread + 6
com.apple.uikit.eventfetch-thread
0 libsystem_kernel.dylib 0x44fc mach_msg_trap + 8
1 libsystem_kernel.dylib 0x3884 mach_msg + 76
2 CoreFoundation 0xa2e58 __CFRunLoopServiceMachPort + 372
3 CoreFoundation 0x9ccf8 __CFRunLoopRun + 1212
4 CoreFoundation 0x9c308 CFRunLoopRunSpecific + 600
5 Foundation 0x8d8c -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 232
6 Foundation 0x8c58 -[NSRunLoop(NSRunLoop) runUntilDate:] + 92
7 UIKitCore 0xc7f304 -[UIEventFetcher threadMain] + 516
8 Foundation 0x17a30c __NSThread__start__ + 864
9 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
10 libsystem_pthread.dylib 0xa758 thread_start + 8
io.flutter.1.ui
0 libsystem_kernel.dylib 0x29124 __psynch_mutexwait + 8
1 libsystem_pthread.dylib 0x71e4 _pthread_mutex_firstfit_lock_wait + 88
2 libsystem_pthread.dylib 0x7130 _pthread_mutex_firstfit_lock_slow + 232
3 libc++.1.dylib 0x3caf4 std::__1::mutex::lock() + 16
4 Flutter 0x2ee078 (Missing)
5 Flutter 0x2f1098 (Missing)
6 CoreFoundation 0xa41d4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 32
7 CoreFoundation 0xa3dd0 __CFRunLoopDoTimer + 1076
8 CoreFoundation 0xa3220 __CFRunLoopDoTimers + 328
9 CoreFoundation 0x9cfd4 __CFRunLoopRun + 1944
10 CoreFoundation 0x9c308 CFRunLoopRunSpecific + 600
11 Flutter 0x2f0f74 (Missing)
12 Flutter 0x2f0788 (Missing)
13 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
14 libsystem_pthread.dylib 0xa758 thread_start + 8
io.flutter.1.io
0 libsystem_kernel.dylib 0x44fc mach_msg_trap + 8
1 libsystem_kernel.dylib 0x3884 mach_msg + 76
2 CoreFoundation 0xa2e58 __CFRunLoopServiceMachPort + 372
3 CoreFoundation 0x9ccf8 __CFRunLoopRun + 1212
4 CoreFoundation 0x9c308 CFRunLoopRunSpecific + 600
5 Flutter 0x2f0f74 (Missing)
6 Flutter 0x2f0788 (Missing)
7 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
8 libsystem_pthread.dylib 0xa758 thread_start + 8
io.worker.1
0 libsystem_kernel.dylib 0x290cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x5434 _pthread_cond_wait + 1248
2 libc++.1.dylib 0x9efc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3 Flutter 0x2ebb60 (Missing)
4 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
5 libsystem_pthread.dylib 0xa758 thread_start + 8
io.worker.2
0 libsystem_kernel.dylib 0x290cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x5434 _pthread_cond_wait + 1248
2 libc++.1.dylib 0x9efc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3 Flutter 0x2ebb60 (Missing)
4 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
5 libsystem_pthread.dylib 0xa758 thread_start + 8
io.worker.3
0 libsystem_kernel.dylib 0x290cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x5434 _pthread_cond_wait + 1248
2 libc++.1.dylib 0x9efc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3 Flutter 0x2ebb60 (Missing)
4 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
5 libsystem_pthread.dylib 0xa758 thread_start + 8
io.worker.4
0 libsystem_kernel.dylib 0x290cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x5434 _pthread_cond_wait + 1248
2 libc++.1.dylib 0x9efc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3 Flutter 0x2ebb60 (Missing)
4 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
5 libsystem_pthread.dylib 0xa758 thread_start + 8
io.worker.5
0 libsystem_kernel.dylib 0x290cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x5434 _pthread_cond_wait + 1248
2 libc++.1.dylib 0x9efc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3 Flutter 0x2ebb60 (Missing)
4 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
5 libsystem_pthread.dylib 0xa758 thread_start + 8
io.worker.6
0 libsystem_kernel.dylib 0x290cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x5434 _pthread_cond_wait + 1248
2 libc++.1.dylib 0x9efc std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 28
3 Flutter 0x2ebb60 (Missing)
4 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
5 libsystem_pthread.dylib 0xa758 thread_start + 8
dart:io EventHandler
0 libsystem_kernel.dylib 0x2b150 kevent + 8
1 Flutter 0x43b48c (Missing)
2 Flutter 0x468cc4 (Missing)
3 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
4 libsystem_pthread.dylib 0xa758 thread_start + 8
Thread
0 libsystem_pthread.dylib 0xa744 start_wqthread + 6
com.apple.root.background-qos
0 CoreFoundation 0xc9a54 __CFStringAppendFormatCore + 14000
1 CoreFoundation 0xca22c _CFStringCreateWithFormatAndArgumentsReturningMetadata + 164
2 Foundation 0x8454 +[NSString stringWithFormat:] + 76
3 FBSDKCoreKit_Basics 0xe58c +[FBSDKLibAnalyzer _addClass:isClassMethod:] + 184
4 FBSDKCoreKit_Basics 0xda14 +[FBSDKLibAnalyzer getMethodsTable:frameworks:] + 284
5 FBSDKCoreKit_Basics 0xbf2c -[FBSDKCrashHandler _generateMethodMapping:] + 252
6 libdispatch.dylib 0x2a84 _dispatch_call_block_and_release + 32
7 libdispatch.dylib 0x481c _dispatch_client_callout + 20
8 libdispatch.dylib 0x1610c _dispatch_root_queue_drain + 688
9 libdispatch.dylib 0x167d8 _dispatch_worker_thread2 + 112
10 libsystem_pthread.dylib 0x3768 _pthread_wqthread + 216
11 libsystem_pthread.dylib 0xa74c start_wqthread + 8
Thread
0 libsystem_pthread.dylib 0xa744 start_wqthread + 6
com.google.firebase.crashlytics.MachExceptionServer
0 libsystem_kernel.dylib 0x44fc mach_msg_trap + 8
1 libsystem_kernel.dylib 0x3884 mach_msg + 76
2 FirebaseCrashlytics 0x184e0 FIRCLSMachExceptionServer + 104
3 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
4 libsystem_pthread.dylib 0xa758 thread_start + 8
Thread
0 libsystem_kernel.dylib 0x2a0a4 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x37f0 _pthread_wqthread + 352
2 libsystem_pthread.dylib 0xa74c start_wqthread + 8
DartWorker
0 libsystem_kernel.dylib 0x290cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x5460 _pthread_cond_wait + 1292
2 Flutter 0x599374 (Missing)
3 Flutter 0x538f18 (Missing)
4 Flutter 0x5df254 (Missing)
5 Flutter 0x598c9c (Missing)
6 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
7 libsystem_pthread.dylib 0xa758 thread_start + 8
DartWorker
0 libsystem_kernel.dylib 0x290cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x5460 _pthread_cond_wait + 1292
2 Flutter 0x599374 (Missing)
3 Flutter 0x5df214 (Missing)
4 Flutter 0x598c9c (Missing)
5 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
6 libsystem_pthread.dylib 0xa758 thread_start + 8
DartWorker
0 libsystem_kernel.dylib 0x290cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x5460 _pthread_cond_wait + 1292
2 Flutter 0x599374 (Missing)
3 Flutter 0x5df214 (Missing)
4 Flutter 0x598c9c (Missing)
5 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
6 libsystem_pthread.dylib 0xa758 thread_start + 8
com.apple.CoreMotion.MotionThread
0 libsystem_kernel.dylib 0x44fc mach_msg_trap + 8
1 libsystem_kernel.dylib 0x3884 mach_msg + 76
2 CoreFoundation 0xa2e58 __CFRunLoopServiceMachPort + 372
3 CoreFoundation 0x9ccf8 __CFRunLoopRun + 1212
4 CoreFoundation 0x9c308 CFRunLoopRunSpecific + 600
5 CoreFoundation 0x9d3f4 CFRunLoopRun + 64
6 CoreMotion 0x14cc78 CLClientCreateIso6709Notation + 196104
7 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
8 libsystem_pthread.dylib 0xa758 thread_start + 8
com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x44fc mach_msg_trap + 8
1 libsystem_kernel.dylib 0x3884 mach_msg + 76
2 CoreFoundation 0xa2e58 __CFRunLoopServiceMachPort + 372
3 CoreFoundation 0x9ccf8 __CFRunLoopRun + 1212
4 CoreFoundation 0x9c308 CFRunLoopRunSpecific + 600
5 CFNetwork 0x24bb38 _CFURLStorageSessionCopyCache + 64268
6 Foundation 0x17a30c __NSThread__start__ + 864
7 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
8 libsystem_pthread.dylib 0xa758 thread_start + 8
JavaScriptCore bmalloc scavenger
0 libsystem_kernel.dylib 0x290cc __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x5434 _pthread_cond_wait + 1248
2 libc++.1.dylib 0x9f98 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 JavaScriptCore 0xfd8118 bmalloc::Scavenger::threadRunLoop() + 552
4 JavaScriptCore 0xfd7bcc bmalloc::Scavenger::Scavenger(std::__1::scoped_lock<bmalloc::Mutex> const&) + 14
5 JavaScriptCore 0xfd90e4 std::__1::__thread_specific_ptr<std::__1::__thread_struct>::set_pointer(std::__1::__thread_struct*) + 46
6 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
7 libsystem_pthread.dylib 0xa758 thread_start + 8
It seems to happen only on iphone. What could this be? Are there ways I could get more info on this error. I don't see any of my code in the stack trace.
EDIT:
Also posted it to the flutter repo