Build 我们的fastlane Xcode构建在Jenkins运行时间歇性失败；未能引导路径“；对于确实存在的路径

我们的fastlane Xcode构建在Jenkins运行时间歇性失败。大约10%的构建，在运行测试目标时，我们会遇到以下故障：

[2020-11-16T16:12:10.276Z] 2020-11-16 08:11:47.435 xcodebuild[72478:2549553] [MT] IDETestOperationsObserverDebug: 415.317 elapsed -- Testing started completed.
[2020-11-16T16:12:10.276Z] 2020-11-16 08:11:47.435 xcodebuild[72478:2549553] [MT] IDETestOperationsObserverDebug: 0.000 sec, +0.000 sec -- start
[2020-11-16T16:12:10.276Z] 2020-11-16 08:11:47.435 xcodebuild[72478:2549553] [MT] IDETestOperationsObserverDebug: 415.317 sec, +415.317 sec -- end

[2020-11-16T16:12:10.276Z] Testing failed:
[2020-11-16T16:12:10.276Z]  REDACTED_iPhoneTests:
[2020-11-16T16:12:10.276Z]      REDACTED.app encountered an error (Failed to install or launch the test runner. If you believe this error represents a bug, please attach the result bundle at /tmp/build/jenkins-mobile-ios-develop-1107/ios/fastlane/output/derivedData/Logs/Test/Test-iPhoneSnapshotTests-2020.11.16_08-04-51--0800.xcresult. (Underlying Error: The request to open "com.REDACTED.REDACTEDapp" failed. The request was denied by service delegate (SBMainWorkspace) for reason: Busy ("Application cannot be launched because it has outstanding termination assertions"). (Underlying Error: The operation couldn’t be completed. Application cannot be launched because it has outstanding termination assertions.)))

在模拟器设备日志中，我们有很多“无法引导路径”错误，其中报告指出无法找到Xcode-12.app下的某些路径（即使在现实中，它也存在）：

似乎其中一个模拟器克隆不断崩溃并可能重新启动（这与上面的第一个日志来自同一个日志，但发生在它之前。（我删除了时间戳并插入了一些分隔符，以便于阅读，并将其放在本文底部，因为这是最长的一个）：

Failed to bootstrap path: path = /Applications/Xcode-12.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/dyld_sim, error = 2: No such file or directory
Nov 16 08:11:44 Mac-169 com.apple.CoreSimulator.SimDevice.4A33E878-D3F6-4EE4-AB53-7ACD59E0B8A5[73117] (com.apple.xpc.launchd.domain.pid.testmanagerd.73149): Failed to bootstrap path: path = /Applications/Xcode-12.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit, error = 2: No such file or directory
Nov 16 08:11:44 Mac-169 com.apple.CoreSimulator.SimDevice.4A33E878-D3F6-4EE4-AB53-7ACD59E0B8A5[73117] (com.apple.xpc.launchd.domain.pid.LogArchiveCollector.73942): Failed to bootstrap path: path = /Applications/Xcode-12.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/dyld_sim, error = 2: No such file or directory
Nov 16 08:11:44 Mac-169 com.apple.CoreSimulator.SimDevice.4A33E878-D3F6-4EE4-AB53-7ACD59E0B8A5[73117] (com.apple.xpc.launchd.domain.pid.LogArchiveCollector.73942): Failed to bootstrap path: path = /Applications/Xcode-12.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/IOKit.framework/Versions/A/IOKit, error = 2: No such file or directory

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xcodebuild  IDETestOperationsObserverDebug: Writing diagnostic log for test session to:
/tmp/build/jenkins-mobile-ios-develop-1107/ios/fastlane/output/derivedData/Logs/Test/Test-iPhoneSnapshotTests-2020.11.16_08-04-51--0800.xcresult/Staging/1_Test/Diagnostics/DETCADERSnapshotTests-BA58BA45-D47B-418B-8E61-80EBA8B3FAAF/DETCADERSnapshotTests-A6366A3A-D533-4145-A1A2-C487CD9787E8/Session-DETCADERSnapshotTests-2020-11-16_081142-AyG7h3.log

xcodebuild IDETestOperationsObserverDebug: (02A95C0D-288A-4F0B-BE2B-BB376A8C5A16) Beginning test session DETCADERSnapshotTests-02A95C0D-288A-4F0B-BE2B-BB376A8C5A16 at 2020-11-16 08:11:42.263 with Xcode 12A7209 on target <DVTiPhoneSimulator: 0x7fd44999f1e0> {
        SimDevice: Clone 2 of iPhone 7 (8FEB1993-97B1-470B-9511-C5B4693A2634, iOS 14.0, Booted)
}

xcodebuild IDETestOperationsObserverDebug: (02A95C0D-288A-4F0B-BE2B-BB376A8C5A16) Finished requesting crash reports. Continuing with testing.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

xcodebuild  IDETestOperationsObserverDebug: Writing diagnostic log for test session to:
/tmp/build/jenkins-mobile-ios-develop-1107/ios/fastlane/output/derivedData/Logs/Test/Test-iPhoneSnapshotTests-2020.11.16_08-04-51--0800.xcresult/Staging/1_Test/Diagnostics/DETCADERSnapshotTests-BA58BA45-D47B-418B-8E61-80EBA8B3FAAF/DETCADERSnapshotTests-DF0A8969-D65B-4379-8DD4-1C445437C40C/Session-DETCADERSnapshotTests-2020-11-16_081142-ojHiX7.log

xcodebuild IDETestOperationsObserverDebug: (B3B8C894-1650-4C81-955D-EB3A844A1796) Beginning test session DETCADERSnapshotTests-B3B8C894-1650-4C81-955D-EB3A844A1796 at 2020-11-16 08:11:42.522 with Xcode 12A7209 on target <DVTiPhoneSimulator: 0x7fd44999f1e0> {
        SimDevice: Clone 2 of iPhone 7 (8FEB1993-97B1-470B-9511-C5B4693A2634, iOS 14.0, Booted)
}


━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

xcodebuild  IDETestOperationsObserverDebug: Writing diagnostic log for test session to:
/tmp/build/jenkins-mobile-ios-develop-1107/ios/fastlane/output/derivedData/Logs/Test/Test-iPhoneSnapshotTests-2020.11.16_08-04-51--0800.xcresult/Staging/1_Test/Diagnostics/DETCADERSnapshotTests-BA58BA45-D47B-418B-8E61-80EBA8B3FAAF/DETCADERSnapshotTests-30F99A37-EB4E-4E36-9581-0EB2288A3664/Session-DETCADERSnapshotTests-2020-11-16_081142-RaEqDv.log

xcodebuild IDETestOperationsObserverDebug: (60E66AC3-343C-44E6-A0F1-CF1C4404CE76) Beginning test session DETCADERSnapshotTests-60E66AC3-343C-44E6-A0F1-CF1C4404CE76 at 2020-11-16 08:11:42.526 with Xcode 12A7209 on target <DVTiPhoneSimulator: 0x7fd44999f1e0> {
        SimDevice: Clone 2 of iPhone 7 (8FEB1993-97B1-470B-9511-C5B4693A2634, iOS 14.0, Booted)
}


xcodebuild IDETestOperationsObserverDebug: (B3B8C894-1650-4C81-955D-EB3A844A1796) Finished requesting crash reports. Continuing with testing.

xcodebuild IDETestOperationsObserverDebug: (60E66AC3-343C-44E6-A0F1-CF1C4404CE76) Finished requesting crash reports. Continuing with testing.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

xcodebuild  IDETestOperationsObserverDebug: Writing diagnostic log for test session to:
/tmp/build/jenkins-mobile-ios-develop-1107/ios/fastlane/output/derivedData/Logs/Test/Test-iPhoneSnapshotTests-2020.11.16_08-04-51--0800.xcresult/Staging/1_Test/Diagnostics/REDACTEDSnapshotTests-5A572528-16A8-4271-BEC6-5143DCFD3B6C/REDACTEDSnapshotTests-A02288EC-AA49-46A6-8760-231AD5913E59/Session-REDACTEDSnapshotTests-2020-11-16_081142-90pgsf.log

xcodebuild IDETestOperationsObserverDebug: (EE062564-9EDD-4C4A-9A21-77212982CCA8) Beginning test session REDACTEDSnapshotTests-EE062564-9EDD-4C4A-9A21-77212982CCA8 at 2020-11-16 08:11:42.913 with Xcode 12A7209 on target <DVTiPhoneSimulator: 0x7fd44999f1e0> {
        SimDevice: Clone 2 of iPhone 7 (8FEB1993-97B1-470B-9511-C5B4693A2634, iOS 14.0, Booted)
}


xcodebuild IDETestOperationsObserverDebug: (EE062564-9EDD-4C4A-9A21-77212982CCA8) Finished requesting crash reports. Continuing with testing.

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xcodebuild  IDETestOperationsObserverDebug: Writing diagnostic log for test session to:
/tmp/build/jenkins-mobile-ios-develop-1107/ios/fastlane/output/derivedData/Logs/Test/Test-iPhoneSnapshotTests-2020.11.16_08-04-51--0800.xcresult/Staging/1_Test/Diagnostics/REDACTEDSnapshotTests-5A572528-16A8-4271-BEC6-5143DCFD3B6C/REDACTEDSnapshotTests-25FCC3D3-3D12-41AE-8D6C-D8662913F0E4/Session-REDACTEDSnapshotTests-2020-11-16_081143-8gwjmz.log

xcodebuild IDETestOperationsObserverDebug: (696DAA83-6A4E-44BB-B341-E9419DC49450) Beginning test session REDACTEDSnapshotTests-696DAA83-6A4E-44BB-B341-E9419DC49450 at 2020-11-16 08:11:43.178 with Xcode 12A7209 on target <DVTiPhoneSimulator: 0x7fd44999f1e0> {
        SimDevice: Clone 2 of iPhone 7 (8FEB1993-97B1-470B-9511-C5B4693A2634, iOS 14.0, Booted)
}



━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

xcodebuild  IDETestOperationsObserverDebug: Writing diagnostic log for test session to:
/tmp/build/jenkins-mobile-ios-develop-1107/ios/fastlane/output/derivedData/Logs/Test/Test-iPhoneSnapshotTests-2020.11.16_08-04-51--0800.xcresult/Staging/1_Test/Diagnostics/REDACTEDSnapshotTests-5A572528-16A8-4271-BEC6-5143DCFD3B6C/REDACTEDSnapshotTests-E0063304-AC2D-4C96-A8F3-B5139FD2C72B/Session-REDACTEDSnapshotTests-2020-11-16_081143-CSWZve.log

xcodebuild IDETestOperationsObserverDebug: (D2EB889B-C942-4E3C-81FB-597689EB9B89) Beginning test session REDACTEDSnapshotTests-D2EB889B-C942-4E3C-81FB-597689EB9B89 at 2020-11-16 08:11:43.181 with Xcode 12A7209 on target <DVTiPhoneSimulator: 0x7fd44999f1e0> {
        SimDevice: Clone 2 of iPhone 7 (8FEB1993-97B1-470B-9511-C5B4693A2634, iOS 14.0, Booted)
}


━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

xcodebuild  IDETestOperationsObserverDebug: Writing diagnostic log for test session to:
/tmp/build/jenkins-mobile-ios-develop-1107/ios/fastlane/output/derivedData/Logs/Test/Test-iPhoneSnapshotTests-2020.11.16_08-04-51--0800.xcresult/Staging/1_Test/Diagnostics/REDACTEDSnapshotTests-5A572528-16A8-4271-BEC6-5143DCFD3B6C/REDACTEDSnapshotTests-1CA2FE03-1508-4A05-BC8F-742DA4396EAD/Session-REDACTEDSnapshotTests-2020-11-16_081143-k91bVJ.log

xcodebuild IDETestOperationsObserverDebug: (0B3DA48C-F46C-4B3E-87C0-2F688C1225D3) Beginning test session REDACTEDSnapshotTests-0B3DA48C-F46C-4B3E-87C0-2F688C1225D3 at 2020-11-16 08:11:43.185 with Xcode 12A7209 on target <DVTiPhoneSimulator: 0x7fd44999f1e0> {
        SimDevice: Clone 2 of iPhone 7 (8FEB1993-97B1-470B-9511-C5B4693A2634, iOS 14.0, Booted)
}


━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

xcodebuild  IDETestOperationsObserverDebug: Writing diagnostic log for test session to:
/tmp/build/jenkins-mobile-ios-develop-1107/ios/fastlane/output/derivedData/Logs/Test/Test-iPhoneSnapshotTests-2020.11.16_08-04-51--0800.xcresult/Staging/1_Test/Diagnostics/REDACTEDSnapshotTests-5A572528-16A8-4271-BEC6-5143DCFD3B6C/REDACTEDSnapshotTests-E715EB70-2866-42C7-A1DD-25224AEC982F/Session-REDACTEDSnapshotTests-2020-11-16_081143-kiKHeq.log

xcodebuild IDETestOperationsObserverDebug: (BD78FA29-C83A-4F69-BF73-37946869A4C4) Beginning test session REDACTEDSnapshotTests-BD78FA29-C83A-4F69-BF73-37946869A4C4 at 2020-11-16 08:11:43.189 with Xcode 12A7209 on target <DVTiPhoneSimulator: 0x7fd44999f1e0> {
        SimDevice: Clone 2 of iPhone 7 (8FEB1993-97B1-470B-9511-C5B4693A2634, iOS 14.0, Booted)

Process:               testmanagerd [72950]
Path:                  /Applications/Xcode-12.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/libexec/testmanagerd
Identifier:            testmanagerd
Version:               17155
Code Type:             X86-64 (Native)
Parent Process:        launchd_sim [72917]
Responsible:           SimulatorTrampoline [12382]
User ID:               501

Date/Time:             2020-11-16 08:12:07.926 -0800
OS Version:            Mac OS X 10.15.7 (19H15)
Report Version:        12
Anonymous UUID:        5CA872E8-AE72-5688-477B-B3E543033B38


Time Awake Since Boot: 310000 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_CRASH (SIGKILL)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Termination Reason:    Namespace LIBXPC, Code 0x4

Application Specific Information:
CoreSimulator 732.17 - Device: Clone 3 of iPhone 7 (229EEFDE-E207-4409-AAC8-B00A256DC6D1) - Runtime: iOS 14.0 (18A372) - DeviceType: iPhone 7

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib          0x00007fff5dc9fdfa mach_msg_trap + 10
1   libsystem_kernel.dylib          0x00007fff5dca0170 mach_msg + 60
2   com.apple.CoreFoundation        0x00007fff203a7e77 __CFRunLoopServiceMachPort + 316
3   com.apple.CoreFoundation        0x00007fff203a258d __CFRunLoopRun + 1284
4   com.apple.CoreFoundation        0x00007fff203a1b9e CFRunLoopRunSpecific + 567
5   com.apple.CoreFoundation        0x00007fff203a2cf1 CFRunLoopRun + 40
6   testmanagerd                    0x000000010bcd8180 -[XCTDaemon run] + 399
7   testmanagerd                    0x000000010bcb14fa main + 318
8   libdyld.dylib                   0x00007fff20257415 start + 1

Thread 1:
0   libsystem_pthread.dylib         0x00007fff5dcd7b68 start_wqthread + 0

Thread 2:
0   libsystem_pthread.dylib         0x00007fff5dcd7b68 start_wqthread + 0

Thread 3:
0   libsystem_pthread.dylib         0x00007fff5dcd7b68 start_wqthread + 0

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000010004005  rbx: 0x0000000007000806  rcx: 0x00007ffee3f4e638  rdx: 0x0000000000000000
  rdi: 0x00007ffee3f4e820  rsi: 0x0000000007000806  rbp: 0x00007ffee3f4e690  rsp: 0x00007ffee3f4e638
   r8: 0x0000000000001d03   r9: 0x00000000ffffffff  r10: 0x0000000000000c00  r11: 0x0000000000000206
  r12: 0x0000000007000806  r13: 0x0000000000000c00  r14: 0x00007ffee3f4e820  r15: 0x0000000000000000
  rip: 0x00007fff5dc9fdfa  rfl: 0x0000000000000206  cr2: 0x00007fff207357fa
  
Logical CPU:     0
Error Code:      0x0100001f
Trap Number:     133