Seconds after I open the workspace for my main project Xcode crashes and disappears.
Here is the crash info in the console app:
Path:									/Applications/Xcode.app/Contents/MacOS/Xcode
Identifier:						com.apple.dt.Xcode
Version:							 12.0 (17219)
Build Info:						IDEFrameworks-17219000000000000~2 (12A7209)
App Item ID:					 497799835
App External ID:			 837639917
Code Type:						 X86-64 (Native)
Parent Process:				??? [1]
Responsible:					 Xcode [26370]
User ID:							 502
Date/Time:						 2020-09-17 15:27:36.490 -0600
OS Version:						Mac OS X 10.15.6 (19G2021)
Report Version:				12
Bridge OS Version:		 4.6 (17P6610)
Anonymous UUID:				362A964B-A9DA-A787-4D24-905B5AF3CD6C
Time Awake Since Boot: 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 [26370]
Application Specific Information:
ProductBuildVersion: 12A7209
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0	 com.apple.dt.IDESwiftPackageCore 0x0000000133b03f3b PIF.Project.addTarget(id:productType:name:productName:) + 1211
1	 com.apple.dt.IDESwiftPackageCore 0x0000000133ae1a20 specialized constructLibraryProductBlueprint #1 (_:type:productIdSuffix:embedResources:) in PackagePIFBuilder.build() + 688
2	 com.apple.dt.IDESwiftPackageCore 0x0000000133ace3f5 PackagePIFBuilder.build() + 11285
3	 com.apple.dt.IDESwiftPackageCore 0x0000000133af543f IDESwiftPackage.update(from:) + 2687
4	 com.apple.dt.IDESwiftPackageCore 0x0000000133ac2ae5 IDESPMWorkspaceDelegate.dependencyPackageDidUpdate(package:) + 1461
5	 com.apple.dt.SwiftPM					 0x0000000133e69fc2 closure #10 in closure #1 in SPMWorkspace.processPackageGraphActionsInBackgroundIfNeeded() + 4562
6	 com.apple.dt.SwiftPM					 0x0000000133e78ee1 partial apply for thunk for @callee_guaranteed () -> () + 17
7	 com.apple.dt.SwiftPM					 0x0000000133e6d0be thunk for @escaping @callee_guaranteed () -> () + 14
8	 libdispatch.dylib						 0x00007fff72d5a658 _dispatch_client_callout + 8
9	 libdispatch.dylib						 0x00007fff72d667ab _dispatch_async_and_wait_invoke + 87
10	libdispatch.dylib						 0x00007fff72d5a658 _dispatch_client_callout + 8
11	libdispatch.dylib						 0x00007fff72d65cab _dispatch_main_queue_callback_4CF + 936
12	com.apple.CoreFoundation			 0x00007fff38d5de81 CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 9
13	com.apple.CoreFoundation			 0x00007fff38d1dc87 __CFRunLoopRun + 2028
14	com.apple.CoreFoundation			 0x00007fff38d1ce3e CFRunLoopRunSpecific + 462
15	com.apple.HIToolbox					 0x00007fff37949abd RunCurrentEventLoopInMode + 292
16	com.apple.HIToolbox					 0x00007fff379497d5 ReceiveNextEventCommon + 584
17	com.apple.HIToolbox					 0x00007fff37949579 _BlockUntilNextEventMatchingListInModeWithFilter + 64
18	com.apple.AppKit							 0x00007fff35f8f039 _DPSNextEvent + 883
19	com.apple.AppKit							 0x00007fff35f8d880 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1352
20	com.apple.dt.DVTKit					 0x0000000105bb1bd0 -[DVTApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 421
21	com.apple.AppKit							 0x00007fff35f7f58e -[NSApplication run] + 658
22	com.apple.AppKit							 0x00007fff35f51396 NSApplicationMain + 777
23	libdyld.dylib								 0x00007fff72db3cc9 start + 1
Appears to be related to SwiftPM. I'm unable to use Xcode 12 for work. Reverting to Xcode 11 until this is resolved.
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