Open Radar

 
Summary:
After a restart, macOS attempted to restore my applications after a particularly "poor" restart (involving a kernel panic), the iOS Simulator got stuck in a nonresponsive state immediately after asking whether I wanted to reopen the closed windows. Force quitting and reopening (either from Xcode or Finder) simply leads to the same result. Here's some relevant stuff I could dig up from Console:

[MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-11764/IDEFoundation/Misc/IDEClientTracking.m:227
Details:  Was asked to cancel clients, but the following clients remain registered after 2 seconds: {(
    <IDEConcreteClientTrackingToken:0x7fcf4597c2d0:'Run "break"'>
)}
Object:   <IDEConcreteClientTracker: 0x7fcf4594b140>
Method:   -_clientCancellationTimeout
Thread:   <NSThread: 0x7fcf3f7021c0>{number = 1, name = main}
Please file a bug at http://bugreport.apple.com with this warning message and any useful information you can provide.

Failed to write crash history to file:///Users/saagarjha/Library/Application%20Support/CrashReporter/Xcode_BCC59DE9-2449-53E0-82E2-B4AE8D098014.plist.

Steps to Reproduce:
Not quite sure, but:

1. Open Xcode and Simulator
2. Restart
3. Have a kernel panic in the middle
4. Have macOS reopen Simulator on boot

Expected Results:
iOS Simulator launches successfully

Actual Results:
Hang upon launch

Version:
Xcode Version 8.2 beta (8C30a)/macOS Sierra 10.12.2 Beta (16C60b)

Notes:
It appears that one of my apps messed with my permissions, and while I was able to "fix" it (by chmod-ing a bunch of directories to 775), this may be actual source of the issue. If you require a spindump to confirm this, I'd be happy to provide one.

Configuration:
Early 2015 MacBook Pro with Retina Display running macOS Sierra 10.12.2 Beta (16C60b)