TestFoundation/TestNSURLSession.swift:413: error: TestURLSession.test_taskTimeout : Asynchronous wait failed - Exceeded timeout of 30.0 seconds, with unfulfilled expectations: download task with handler
Test Case 'TestURLSession.test_taskTimeout' failed (30.005 seconds)
Test Case 'TestURLSession.test_verifyRequestHeaders' started at 11:56:23.809
fatal error: unexpectedly found nil while unwrapping an Optional value
Current stack trace:

0    libswiftCore.so                    0x00007f37637f6cb8 <unavailable> + 3349688
1    libswiftCore.so                    0x00007f376382d2a0 _swift_stdlib_reportFatalError + 62
2    libswiftCore.so                    0x00007f37637de3ef <unavailable> + 3249135
3    libswiftCore.so                    0x00007f37635e9db4 <unavailable> + 1199540
4    libswiftCore.so                    0x00007f37637a4ba1 <unavailable> + 3013537
5    libswiftCore.so                    0x00007f37635e9db4 <unavailable> + 1199540
6    libswiftCore.so                    0x00007f376371ac00 specialized _fatalErrorMessage(_:_:file:line:flags:) + 96
7    TestFoundation                     0x0000000000622829 <unavailable> + 2238505
8    TestFoundation                     0x000000000062768c <unavailable> + 2258572
9    libFoundation.so                   0x00007f3763032dfd <unavailable> + 6475261
10   libFoundation.so                   0x00007f3762f1cd60 BlockOperation.main() + 233
11   libFoundation.so                   0x00007f3762f1e930 OperationQueue._runOperation() + 264
12   libFoundation.so                   0x00007f3762f23e22 <unavailable> + 5365282
13   libFoundation.so                   0x00007f3762f23fa2 <unavailable> + 5365666
14   libFoundation.so                   0x00007f3762f1bd40 <unavailable> + 5332288
15   libdispatch.so                     0x00007f3763a4b1e0 <unavailable> + 274912
16   libdispatch.so                     0x00007f3763a4b73e <unavailable> + 276286
17   libdispatch.so                     0x00007f3763a4aafb <unavailable> + 273147
18   libdispatch.so                     0x00007f3763a4f6c4 <unavailable> + 292548
19   libdispatch.so                     0x00007f3763a4f25d <unavailable> + 291421
20   libdispatch.so                     0x00007f3763a6f39f <unavailable> + 422815
21   libpthread.so.0                    0x00007f37627f070a <unavailable> + 30474
22   libc.so.6                          0x00007f376187e7c0 clone + 109