Xcode 9.2 crashing on successful build with react-native

Question

I have a react-native application which was working fine this morning but now I can't get it to build at all. I ran into some major linking errors today, and was getting build errors for a while. I finally managed to get the build to succeed after abandoning manual linking and using a combination of react-native link and pod install. But now when the build succeeds Xcode itself crashes. The simulator is opening but Xcode crashes before it can even try to install the new build. I have never seen anything like it before with Xcode.

react-native 0.51.0
react 16.0.0
node 7.8.0
Xcode 9.2
Cocoapods 1.4.0

Error report:

Process: Xcode [3747] Path:
/Applications/Xcode.app/Contents/MacOS/Xcode Identifier:
Xcode Version: 9.2 (13772) App Item ID:
497799835 App External ID: 825038102 Code Type:
X86-64 (Native) Parent Process: ??? [1] Responsible:
Xcode [3747] User ID: 502

Date/Time: 2018-03-31 20:10:21.783 -0500 OS Version:
Mac OS X 10.13.3 (17D102) Report Version: 12 Anonymous UUID:
D8F23055-EFF7-4CD7-5BEE-671DADA76EF5

Time Awake Since Boot: 640 seconds

System Integrity Protection: enabled

Crashed Thread: 18 Dispatch queue: ConcurrentQueue: -[DVTiPhoneSimulator launchSimulatedExecutable:launchService:error:]_block_invoke_3

Exception Type: EXC_CRASH (SIGABRT) Exception Codes:
0x0000000000000000, 0x0000000000000000 Exception Note:
EXC_CORPSE_NOTIFY

Application Specific Information: ProductBuildVersion: 9C40b UNCAUGHT EXCEPTION (NSInvalidArgumentException): *** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[0] UserInfo: (null) Hints:
Backtrace: 0 __exceptionPreprocess (in CoreFoundation) 1
DVTFailureHintExceptionPreprocessor (in DVTFoundation) 2
objc_exception_throw (in libobjc.A.dylib) 3
_CFThrowFormattedException (in CoreFoundation) 4 -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] (in CoreFoundation) 5 +[NSDictionary dictionaryWithObjects:forKeys:count:] (in CoreFoundation) 6
__68-[DVTiPhoneSimulator launchSimulatedExecutable:launchService:error:]_block_invoke.807 (in IDEiOSSupportCore) 7 __38-[DVTFuture(DVTFutureAdditions) then:]_block_invoke_2 (in DVTFoundation) 8 __44-[DVTFuture _internalSetState:result:error:]_block_invoke.207 (in DVTFoundation) 9 -[DVTFuture setState:result:error:] (in DVTFoundation) 10
__54-[DVTFuture trackFuture:progress:cancel:result:error:]_block_invoke.266 (in DVTFoundation) 11 -[DVTFuture observeFinish:] (in DVTFoundation) 12 -[DVTFuture trackFuture:progress:cancel:result:error:] (in DVTFoundation) 13 -[DVTFuture trackFuture:] (in DVTFoundation) 14 __38-[DVTFuture(DVTFutureAdditions) then:]_block_invoke_2 (in DVTFoundation) 15 __44-[DVTFuture _internalSetState:result:error:]_block_invoke.207 (in DVTFoundation) 16 -[DVTFuture setState:result:error:] (in DVTFoundation) 17
__54-[DVTFuture trackFuture:progress:cancel:result:error:]_block_invoke.266 (in DVTFoundation) 18 __44-[DVTFuture _internalSetState:result:error:]_block_invoke.207 (in DVTFoundation) 19 -[DVTFuture setState:result:error:] (in DVTFoundation) 20
-[DVTFuture succeedWithResult:] (in DVTFoundation) 21 __68-[DVTiPhoneSimulator launchSimulatedExecutable:launchService:error:]_block_invoke_4 (in IDEiOSSupportCore) 22 __DVTCreateSingleCallBlock_block_invoke (in DVTFoundation) 23 _dispatch_client_callout (in libdispatch.dylib) 24 _dispatch_block_invoke_direct (in libdispatch.dylib) 25
__DVTDispatchAsync_block_invoke (in DVTFoundation) 26 _dispatch_call_block_and_release (in libdispatch.dylib) 27 _dispatch_client_callout (in libdispatch.dylib) 28 _dispatch_continuation_pop (in libdispatch.dylib) 29 _dispatch_async_redirect_invoke (in libdispatch.dylib) 30 _dispatch_root_queue_drain (in libdispatch.dylib) 31 _dispatch_worker_thread3 (in libdispatch.dylib) 32 _pthread_wqthread (in libsystem_pthread.dylib) 33 start_wqthread (in libsystem_pthread.dylib) abort() called

Application Specific Signatures: NSInvalidArgumentException

Application Specific Backtrace 1: 0 CoreFoundation
0x00007fff50ccafcb __exceptionPreprocess + 171 1 DVTFoundation
0x0000000107063a5c DVTFailureHintExceptionPreprocessor + 274 2
libobjc.A.dylib 0x00007fff77980c76 objc_exception_throw + 48 3 CoreFoundation
0x00007fff50d0c264 _CFThrowFormattedException + 202 4 CoreFoundation 0x00007fff50bce6c2 -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 322 5 CoreFoundation
0x00007fff50bce54b +[NSDictionary dictionaryWithObjects:forKeys:count:] + 59 6 IDEiOSSupportCore
0x0000000119710f51 __68-[DVTiPhoneSimulator launchSimulatedExecutable:launchService:error:]_block_invoke.807 + 108 7 DVTFoundation 0x0000000106fbd909 __38-[DVTFuture(DVTFutureAdditions) then:]_block_invoke_2 + 104 8 DVTFoundation 0x0000000106fbb5c3 __44-[DVTFuture _internalSetState:result:error:]_block_invoke.207 + 89 9 DVTFoundation 0x0000000106fbb8d9 -[DVTFuture setState:result:error:] + 199 10 DVTFoundation
0x0000000106fbca1a __54-[DVTFuture trackFuture:progress:cancel:result:error:]_block_invoke.266 + 119 11 DVTFoundation 0x0000000106fb9565 -[DVTFuture observeFinish:] + 277 12 DVTFoundation
0x0000000106fbc7e8 -[DVTFuture trackFuture:progress:cancel:result:error:] + 331 13 DVTFoundation
0x0000000106fbd0a8 -[DVTFuture trackFuture:] + 42 14 DVTFoundation
0x0000000106fbd927 __38-[DVTFuture(DVTFutureAdditions) then:]_block_invoke_2 + 134 15 DVTFoundation
0x0000000106fbb5c3 __44-[DVTFuture _internalSetState:result:error:]_block_invoke.207 + 89 16 DVTFoundation 0x0000000106fbb8d9 -[DVTFuture setState:result:error:] + 199 17 DVTFoundation
0x0000000106fbca1a __54-[DVTFuture trackFuture:progress:cancel:result:error:]_block_invoke.266 + 119 18 DVTFoundation 0x0000000106fbb5c3 __44-[DVTFuture _internalSetState:result:error:]_block_invoke.207 + 89 19 DVTFoundation 0x0000000106fbb8d9 -[DVTFuture setState:result:error:] + 199 20 DVTFoundation
0x0000000106fbbb0a -[DVTFuture succeedWithResult:] + 31 21 IDEiOSSupportCore 0x0000000119710abf __68-[DVTiPhoneSimulator launchSimulatedExecutable:launchService:error:]_block_invoke_4 + 70 22 DVTFoundation 0x0000000106f8606d __DVTCreateSingleCallBlock_block_invoke + 133 23 libdispatch.dylib 0x00007fff78536d50 _dispatch_client_callout + 8 24 libdispatch.dylib 0x00007fff78549333 _dispatch_block_invoke_direct + 317 25 DVTFoundation 0x00000001070b9a4f __DVTDispatchAsync_block_invoke + 806 26 libdispatch.dylib 0x00007fff7853e591 _dispatch_call_block_and_release + 12 27 libdispatch.dylib 0x00007fff78536d50 _dispatch_client_callout + 8 28 libdispatch.dylib 0x00007fff78549e76 _dispatch_continuation_pop + 472 29 libdispatch.dylib 0x00007fff785416cb _dispatch_async_redirect_invoke + 703 30 libdispatch.dylib 0x00007fff78538941 _dispatch_root_queue_drain + 515 31 libdispatch.dylib 0x00007fff785386ed _dispatch_worker_thread3 + 101 32 libsystem_pthread.dylib 0x00007fff787fb1ca _pthread_wqthread + 1387 33 libsystem_pthread.dylib 0x00007fff787fac4d start_wqthread + 13

Thread 0:: Dispatch queue: com.apple.main-thread 0
libsystem_kernel.dylib 0x00007fff786b67c2 mach_msg_trap + 10 1 libsystem_kernel.dylib 0x00007fff786b5cdc mach_msg + 60 2
com.apple.CoreFoundation 0x00007fff50c46575 __CFRunLoopServiceMachPort + 341 3 com.apple.CoreFoundation 0x00007fff50c458c7 __CFRunLoopRun + 1783 4 com.apple.CoreFoundation 0x00007fff50c44f43 CFRunLoopRunSpecific + 483 5 com.apple.HIToolbox 0x00007fff4ff5ce26 RunCurrentEventLoopInMode + 286 6
com.apple.HIToolbox 0x00007fff4ff5cb96 ReceiveNextEventCommon + 613 7 com.apple.HIToolbox
0x00007fff4ff5c914 _BlockUntilNextEventMatchingListInModeWithFilter + 64 8 com.apple.AppKit 0x00007fff4e227f5f _DPSNextEvent + 2085 9 com.apple.AppKit 0x00007fff4e9bdb4c -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 3044 10 com.apple.dt.DVTKit 0x0000000107672f9a -[DVTApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 390 11 com.apple.AppKit 0x00007fff4e21cd6d -[NSApplication run] + 764 12 com.apple.AppKit 0x00007fff4e1ebf1a NSApplicationMain + 804 13 libdyld.dylib
0x00007fff78570115 start + 1

Thread 1: 0 libsystem_kernel.dylib 0x00007fff786b67c2 mach_msg_trap + 10 1 libsystem_kernel.dylib
0x00007fff786b5cdc mach_msg + 60 2 com.apple.CoreFoundation
0x00007fff50c46575 CFRunLoopServiceMachPort + 341 3
com.apple.CoreFoundation 0x00007fff50c458c7 __CFRunLoopRun + 1783 4 com.apple.CoreFoundation 0x00007fff50c44f43 CFRunLoopRunSpecific + 483 5 com.apple.Foundation
0x00007fff52d16c16 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 277 6 com.apple.DTDeviceKitBase 0x00000001197c9917 +[DTDKRemoteDeviceConnection startServiceBrowsers] + 217 7 com.apple.Foundation 0x00007fff52d24ee8 __NSThread__start + 1197 8 libsystem_pthread.dylib 0x00007fff787fb6c1 _pthread_body + 340 9 libsystem_pthread.dylib 0x00007fff787fb56d _pthread_start + 377 10 libsystem_pthread.dylib
0x00007fff787fac5d thread_start + 13

The error report goes on and on but there wasn't anything that seemed relevant in it.

Answer 1

I had overwritten some files as part of my troubleshooting and accidentally deleted my projects bundle identifier. Resetting that made everything work again.