iOS崩溃,EXC_BREAKPOINT,没有Xcode 6.1的线索

我使用解析,我只是在后台用完成块做一个请求.
应用程序在简单的if条件下崩溃,我几乎无法识别任何东西,无法打印描述,…
你有什么主意吗 ？一个起点？什么？
Xcode 6.1真的很奇怪,似乎调试器有问题.

这是崩溃的日志：

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib          0x000000019657a964 __kill + 8
1   MyAPP                           0x00000001001f2b70 0x10009c000 + 1403760
2   libsystem_platform.dylib        0x0000000196610958 _sigtramp + 64
3   MyAPP                           0x00000001001318cc 0x10009c000 + 612556
4   MyAPP                           0x000000010013797c 0x10009c000 + 637308
5   MyAPP                           0x0000000100135fc4 0x10009c000 + 630724
6   MyAPP                           0x00000001002e408c 0x10009c000 + 2392204
7   MyAPP                           0x00000001001dbf78 0x10009c000 + 1310584
8   libdispatch.dylib               0x00000001964393a8 _dispatch_call_block_and_release + 20
9   libdispatch.dylib               0x0000000196439368 _dispatch_client_callout + 12
10  libdispatch.dylib               0x000000019643d97c _dispatch_main_queue_callback_4CF + 928
11  CoreFoundation                  0x000000018566d69c __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 8
12  CoreFoundation                  0x000000018566b744 __CFRunLoopRun + 1488
13  CoreFoundation                  0x00000001855991f0 CFRunLoopRunSpecific + 392
14  GraphicsServices                0x000000018e7275a0 GSEventRunModal + 164
15  UIKit                           0x0000000189eca780 UIApplicationMain + 1484
16  Shuff                           0x0000000100129474 0x10009c000 + 578676
17  libdyld.dylib                   0x0000000196462a04 start + 0

这是iOS代码的示例：

var query = PFQuery(className: "_User")
query.whereKey("facebookId",containedIn: ids)

query.findObjectsInBackgroundWithBlock(){
    results,error in
        if var resultsvar = results? {
              self.functionToCall(resultsvar)
         }
 }

并且functionToCall崩溃了.

也许这可以帮助：

0 0x00000001001679c8在Swift._ArrayBuffer._nonNative.getter的专业化中：Swift.Optional [inlined]()