I created a custom keyboard in Swift, and made it crash intentionally inside my keyboard target. But I could not see any debug symbol in the crash report. I've set all "Strip Debug Symbols During Copy" to NO in Xcode 6.1.1 or 6.2 Beta 3. Here is the crash report:
Incident Identifier: 59026289-7569-41BB-BFDC-E1186F854453
CrashReporter Key: 2ccc0eaebaa050c6b02f28b64d2e60e7dfe8ebe3
Hardware Model: iPhone7,1
Process: CrashIMEKeyboard [2564]
Path: /private/var/mobile/Containers/Bundle/Application/3F12CD05-15D4-4835-982B-A9104AA7B024/CrashIME.app/PlugIns/CrashIMEKeyboard.appex/CrashIMEKeyboard
Identifier: com.superime.CrashIME.CrashIMEKeyboard
Version: 1 (1.0)
Code Type: ARM-64 (Native)
Parent Process: launchd [1]
Date/Time: 2015-01-14 10:58:29.378 +0800
Launch Time: 2015-01-14 10:58:12.772 +0800
OS Version: iOS 8.1.2 (12B440)
Report Version: 105
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x00000001000a02cc
Triggered by Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libswiftCore.dylib 0x00000001000a02cc 0x100068000 + 230092
1 libswiftCore.dylib 0x00000001000a02c8 0x100068000 + 230088
2 CrashIMEKeyboard 0x00000001000498a4 0x100040000 + 39076
3 CrashIMEKeyboard 0x0000000100049c24 0x100040000 + 39972
4 UIKit 0x0000000187be8d30 -[UIApplication sendAction:to:from:forEvent:] + 92
5 UIKit 0x0000000187bd1e44 -[UIControl _sendActionsForEvents:withEvent:] + 608
6 UIKit 0x0000000187be86cc -[UIControl touchesEnded:withEvent:] + 588
7 UIKit 0x0000000187be8358 -[UIWindow _sendTouchesForEvent:] + 696
8 UIKit 0x0000000187be18ac -[UIWindow sendEvent:] + 680
9 UIKit 0x0000000187bb4fa4 -[UIApplication sendEvent:] + 260
10 UIKit 0x0000000187e53f54 _UIApplicationHandleEventFromQueueEvent + 14988
11 UIKit 0x0000000187bb350c _UIApplicationHandleEventQueue + 1612
12 CoreFoundation 0x00000001833ba9e8 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 20
13 CoreFoundation 0x00000001833b9c8c __CFRunLoopDoSources0 + 260
14 CoreFoundation 0x00000001833b7d3c __CFRunLoopRun + 708
15 CoreFoundation 0x00000001832e50a0 CFRunLoopRunSpecific + 392
16 GraphicsServices 0x000000018c4875a0 GSEventRunModal + 164
17 UIKit 0x0000000187c1a3bc UIApplicationMain + 1484
18 libxpc.dylib 0x00000001943b4268 _xpc_objc_main + 764
19 libxpc.dylib 0x00000001943b5f50 xpc_main + 196
20 Foundation 0x00000001843bbc7c -[NSXPCListener resume] + 180
21 PlugInKit 0x000000018e39690c -[PKService run] + 596
22 PlugInKit 0x000000018e396544 +[PKService main] + 60
23 PlugInKit 0x000000018e396934 +[PKService _defaultRun:arguments:] + 20
24 libextension.dylib 0x00000001933c4d88 NSExtensionMain + 64
25 libdyld.dylib 0x00000001941cea04 start + 0
