------------ TASK ------------
Task(id: 6557774610956288, parentKey: flutter/flutter/7a7e2bb247c98456861de112cc10e57a559eef82, key: 6557774610956288, commitKey: flutter/flutter/7a7e2bb247c98456861de112cc10e57a559eef82, createTimestamp: 1576199040723, startTimestamp: 1576199780295, endTimestamp: 1576199857934, name: basic_material_app_ios__compile, attempts: 2, isFlaky: false, timeoutInMinutes: 0, reason: Task failed on agent, requiredCapabilities: [mac/ios], reservedForAgentId: flutter-devicelab-mac-8, stageName: devicelab_ios, status: Failed)

------------ LOG ------------
Deleting build/ directories, if any.
Deleting /Users/flutter/.cocoon/flutter/dev/benchmarks/complex_layout/build
2019-12-12T17:14:45.217746: Observatory listening on http://127.0.0.1:20000/
2019-12-12T17:14:45.944825: Running task.
2019-12-12T17:14:45.945556: 

══════════════════╡ ••• Checking running Dart processes ••• ╞═══════════════════

2019-12-12T17:14:46.036361: RunningProcesses{pid: 51597, commandLine: /Users/flutter/.cocoon/flutter/bin/cache/dart-sdk/bin/dart --enable-vm-service=20000 --no-pause-isolates-on-exit --disable-service-auth-codes bin/tasks/basic_material_app_ios__compile.dart --cloud-auth-token=ya29.c.Kl61ByV_hEuut0xKg4rs2Mfoy-3XwhNur59V-GmiFys9fgS72ta59ozJk8IoiZ93HbWPh40XUyyIo25wg6xLbtZEBj-rV-P5aOA6d5FSjJ8xHHd_Ix0-JJqJdLe7NcsH, creationDate: 2019-12-12 17:14:45.000}
RunningProcesses{pid: 89855, commandLine: dart bin/agent.dart ci, creationDate: 2019-12-10 17:09:06.000}
2019-12-12T17:14:46.326307: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter create --template=app sample_flutter_app in /var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T
2019-12-12T17:14:46.793232: stdout: Creating project sample_flutter_app... androidx: true
2019-12-12T17:14:46.827086: stdout:   sample_flutter_app/ios/Runner.xcworkspace/contents.xcworkspacedata (created)
2019-12-12T17:14:46.829070: stdout:   sample_flutter_app/ios/Runner/Info.plist (created)
2019-12-12T17:14:46.837630: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png (created)
2019-12-12T17:14:46.838366: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png (created)
2019-12-12T17:14:46.839031: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md (created)
2019-12-12T17:14:46.839740: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json (created)
2019-12-12T17:14:46.840412: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png (created)
2019-12-12T17:14:46.841067: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png (created)
2019-12-12T17:14:46.841919: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png (created)
2019-12-12T17:14:46.842604: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png (created)
2019-12-12T17:14:46.843234: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png (created)
2019-12-12T17:14:46.843870: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png (created)
2019-12-12T17:14:46.844604: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png (created)
2019-12-12T17:14:46.845376: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png (created)
2019-12-12T17:14:46.846062: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json (created)
2019-12-12T17:14:46.846715: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png (created)
2019-12-12T17:14:46.847452: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png (created)
2019-12-12T17:14:46.848128: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png (created)
2019-12-12T17:14:46.849175: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png (created)
2019-12-12T17:14:46.849914: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png (created)
2019-12-12T17:14:46.850546: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png (created)
2019-12-12T17:14:46.851694: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png (created)
2019-12-12T17:14:46.852485: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png (created)
2019-12-12T17:14:46.853171: stdout:   sample_flutter_app/ios/Runner/Base.lproj/LaunchScreen.storyboard (created)
2019-12-12T17:14:46.853895: stdout:   sample_flutter_app/ios/Runner/Base.lproj/Main.storyboard (created)
2019-12-12T17:14:46.854517: stdout:   sample_flutter_app/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata (created)
2019-12-12T17:14:46.855307: stdout:   sample_flutter_app/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme (created)
2019-12-12T17:14:46.861518: stdout:   sample_flutter_app/ios/Flutter/Debug.xcconfig (created)
2019-12-12T17:14:46.862203: stdout:   sample_flutter_app/ios/Flutter/Release.xcconfig (created)
2019-12-12T17:14:46.862955: stdout:   sample_flutter_app/ios/Flutter/AppFrameworkInfo.plist (created)
2019-12-12T17:14:46.863622: stdout:   sample_flutter_app/ios/.gitignore (created)
2019-12-12T17:14:46.864237: stdout:   sample_flutter_app/test/widget_test.dart (created)
2019-12-12T17:14:46.867076: stdout:   sample_flutter_app/sample_flutter_app.iml (created)
2019-12-12T17:14:46.868256: stdout:   sample_flutter_app/.gitignore (created)
2019-12-12T17:14:46.869191: stdout:   sample_flutter_app/.metadata (created)
2019-12-12T17:14:46.869988: stdout:   sample_flutter_app/android/app/src/profile/AndroidManifest.xml (created)
2019-12-12T17:14:46.870873: stdout:   sample_flutter_app/android/app/src/main/res/mipmap-mdpi/ic_launcher.png (created)
2019-12-12T17:14:46.871702: stdout:   sample_flutter_app/android/app/src/main/res/mipmap-hdpi/ic_launcher.png (created)
2019-12-12T17:14:46.872431: stdout:   sample_flutter_app/android/app/src/main/res/drawable/launch_background.xml (created)
2019-12-12T17:14:46.873420: stdout:   sample_flutter_app/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png (created)
2019-12-12T17:14:46.874220: stdout:   sample_flutter_app/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png (created)
2019-12-12T17:14:46.874923: stdout:   sample_flutter_app/android/app/src/main/res/values/styles.xml (created)
2019-12-12T17:14:46.875636: stdout:   sample_flutter_app/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png (created)
2019-12-12T17:14:46.876460: stdout:   sample_flutter_app/android/app/src/main/AndroidManifest.xml (created)
2019-12-12T17:14:46.877714: stdout:   sample_flutter_app/android/app/src/debug/AndroidManifest.xml (created)
2019-12-12T17:14:46.878717: stdout:   sample_flutter_app/android/gradle/wrapper/gradle-wrapper.properties (created)
2019-12-12T17:14:46.879568: stdout:   sample_flutter_app/android/gradle.properties (created)
2019-12-12T17:14:46.880418: stdout:   sample_flutter_app/android/.gitignore (created)
2019-12-12T17:14:46.881091: stdout:   sample_flutter_app/android/settings.gradle (created)
2019-12-12T17:14:46.881803: stdout:   sample_flutter_app/android/app/build.gradle (created)
2019-12-12T17:14:46.883072: stdout:   sample_flutter_app/android/app/src/main/kotlin/com/example/sample_flutter_app/MainActivity.kt (created)
2019-12-12T17:14:46.902698: stdout:   sample_flutter_app/android/build.gradle (created)
2019-12-12T17:14:46.903981: stdout:   sample_flutter_app/android/sample_flutter_app_android.iml (created)
2019-12-12T17:14:46.905077: stdout:   sample_flutter_app/pubspec.yaml (created)
2019-12-12T17:14:46.906631: stdout:   sample_flutter_app/README.md (created)
2019-12-12T17:14:46.907379: stdout:   sample_flutter_app/ios/Runner/Runner-Bridging-Header.h (created)
2019-12-12T17:14:46.908031: stdout:   sample_flutter_app/ios/Runner/AppDelegate.swift (created)
2019-12-12T17:14:46.908669: stdout:   sample_flutter_app/ios/Runner.xcodeproj/project.pbxproj (created)
2019-12-12T17:14:46.913139: stdout:   sample_flutter_app/lib/main.dart (created)
2019-12-12T17:14:46.915089: stdout:   sample_flutter_app/.idea/runConfigurations/main_dart.xml (created)
2019-12-12T17:14:46.915722: stdout:   sample_flutter_app/.idea/libraries/Flutter_for_Android.xml (created)
2019-12-12T17:14:46.916586: stdout:   sample_flutter_app/.idea/libraries/Dart_SDK.xml (created)
2019-12-12T17:14:46.917322: stdout:   sample_flutter_app/.idea/libraries/KotlinJavaRuntime.xml (created)
2019-12-12T17:14:46.917926: stdout:   sample_flutter_app/.idea/modules.xml (created)
2019-12-12T17:14:46.918705: stdout:   sample_flutter_app/.idea/workspace.xml (created)
2019-12-12T17:14:49.100503: stdout: Running "flutter pub get" in sample_flutter_app...                  2.1s
2019-12-12T17:14:49.244463: stdout: Wrote 68 files.
stdout: 
stdout: All done!
2019-12-12T17:14:51.550101: stdout: [✓] Flutter: is fully installed. (Channel unknown, v1.13.2-pre.23, on Mac OS X 10.14.6 18G103, locale en-US)
stdout: [!] Android toolchain - develop for Android devices: is partially installed; more components are available. (Android SDK version 28.0.3)
stdout: [✓] Xcode - develop for iOS and macOS: is fully installed. (Xcode 11.0)
stdout: [!] Android Studio: is not available. (not installed)
stdout: [!] VS Code: is partially installed; more components are available. (version 1.38.1)
stdout: [✓] Connected device: is fully installed. (1 available)
stdout: 
stdout: Run "flutter doctor" for information about installing additional components.
stdout: 
2019-12-12T17:14:51.550210: stdout: In order to run your application, type:
stdout: 
stdout:   $ cd sample_flutter_app
stdout:   $ flutter run
stdout: 
stdout: Your application code is in sample_flutter_app/lib/main.dart.
stdout: 
2019-12-12T17:14:51.563604: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:14:51.571533: 
Executing: /Users/flutter/.cocoon/flutter/bin/cache/artifacts/libimobiledevice/idevice_id -l in /var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app with environment {DYLD_LIBRARY_PATH: /Users/flutter/.cocoon/flutter/bin/cache/artifacts/libimobiledevice:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/usbmuxd:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/libplist:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/openssl:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/ideviceinstaller:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/ios-deploy:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/libzip}
2019-12-12T17:14:51.583294: stdout: cb313701092c54ffa70395793c5fdb2fd0e6b56e
2019-12-12T17:14:51.585450: "/Users/flutter/.cocoon/flutter/bin/cache/artifacts/libimobiledevice/idevice_id" exit code: 0
2019-12-12T17:14:51.588081: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter packages get in /var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app
2019-12-12T17:14:52.441627: stdout: Running "flutter pub get" in sample_flutter_app...                  0.3s
2019-12-12T17:14:52.559415: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:14:52.560546: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter clean in /var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app
2019-12-12T17:14:55.038822: stdout: Cleaning Xcode workspace...                                         1.9s
2019-12-12T17:14:55.042556: stdout: Deleting .dart_tool...                                               0ms
2019-12-12T17:14:55.057898: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:14:55.058411: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter build aot -v --extra-gen-snapshot-options=--print_snapshot_sizes --release --no-pub --target-platform ios in /var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app
2019-12-12T17:14:55.375914: stdout: [  +23 ms] executing: [/Users/flutter/.cocoon/flutter/] git -c log.showSignature=false log -n 1 --pretty=format:%H
2019-12-12T17:14:55.400058: stdout: [  +33 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
2019-12-12T17:14:55.400156: stdout: [        ] 7a7e2bb247c98456861de112cc10e57a559eef82
2019-12-12T17:14:55.400583: stdout: [        ] executing: [/Users/flutter/.cocoon/flutter/] git describe --match v*.*.* --first-parent --long --tags
2019-12-12T17:14:55.417213: stdout: [  +16 ms] Exit code 0 from: git describe --match v*.*.* --first-parent --long --tags
stdout: [        ] v1.13.1-23-g7a7e2bb24
2019-12-12T17:14:55.425079: stdout: [   +7 ms] executing: [/Users/flutter/.cocoon/flutter/] git rev-parse --abbrev-ref --symbolic @{u}
2019-12-12T17:14:55.434058: stdout: [   +8 ms] Exit code 128 from: git rev-parse --abbrev-ref --symbolic @{u}
2019-12-12T17:14:55.434156: stdout: [        ] fatal: HEAD does not point to a branch
2019-12-12T17:14:55.444644: stdout: [  +10 ms] executing: [/Users/flutter/.cocoon/flutter/] git rev-parse --abbrev-ref HEAD
2019-12-12T17:14:55.453063: stdout: [   +8 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
stdout: [        ] HEAD
2019-12-12T17:14:55.475170: stdout: [  +21 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
2019-12-12T17:14:55.475312: stdout: [        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
2019-12-12T17:14:55.477933: stdout: [   +2 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
2019-12-12T17:14:55.478013: stdout: [        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
2019-12-12T17:14:55.478056: stdout: [        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
2019-12-12T17:14:55.478128: stdout: [        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
2019-12-12T17:14:55.478273: stdout: [        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
2019-12-12T17:14:55.478337: stdout: [        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
2019-12-12T17:14:55.484569: stdout: [   +6 ms] Artifact Instance of 'MaterialFonts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'GradleWrapper' is not required, skipping update.
stdout: [        ] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
2019-12-12T17:14:55.484654: stdout: [        ] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
2019-12-12T17:14:55.484706: stdout: [        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
2019-12-12T17:14:55.487515: stdout: [   +2 ms] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
stdout: [        ] Artifact Instance of 'FlutterSdk' is not required, skipping update.
stdout: [        ] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
2019-12-12T17:14:55.487595: stdout: [        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
2019-12-12T17:14:55.487654: stdout: [        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
2019-12-12T17:14:55.487726: stdout: [        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
2019-12-12T17:14:55.487899: stdout: [        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
2019-12-12T17:14:55.488068: stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
2019-12-12T17:14:55.488129: stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
2019-12-12T17:14:55.488923: stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
2019-12-12T17:14:55.499167: stdout: [  +10 ms] Building AOT snapshot in release mode (ios-release)...
2019-12-12T17:14:55.536696: stdout: [  +38 ms] Compiling Dart to kernel: /private/var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app/lib/main.dart
2019-12-12T17:14:55.547186: stdout: [  +10 ms] /Users/flutter/.cocoon/flutter/bin/cache/dart-sdk/bin/dart /Users/flutter/.cocoon/flutter/bin/cache/artifacts/engine/darwin-x64/frontend_server.dart.snapshot --sdk-root /Users/flutter/.cocoon/flutter/bin/cache/artifacts/engine/common/flutter_patched_sdk_product/ --target=flutter -Ddart.developer.causal_async_stacks=true -Ddart.vm.profile=false -Ddart.vm.product=true --bytecode-options=source-positions --aot --tfa --packages .packages --output-dill build/aot/app.dill --depfile build/aot/kernel_compile.d package:sample_flutter_app/main.dart
2019-12-12T17:15:02.758053: stdout: [+7210 ms] Extra gen_snapshot options: [--print_snapshot_sizes]
2019-12-12T17:15:02.761056: stdout: [   +3 ms] executing: /Users/flutter/.cocoon/flutter/bin/cache/artifacts/engine/ios-release/gen_snapshot_arm64 --causal_async_stacks --deterministic --print_snapshot_sizes --snapshot_kind=app-aot-assembly --assembly=build/aot/arm64/snapshot_assembly.S build/aot/app.dill
2019-12-12T17:15:07.249802: stdout: [+4488 ms] VMIsolate(CodeSize): 4755
stdout: [        ] Isolate(CodeSize): 723206
2019-12-12T17:15:07.249901: stdout: [        ] ReadOnlyData(CodeSize): 900192
stdout: [        ] Instructions(CodeSize): 2461376
stdout: [        ] Total(CodeSize): 4089529
2019-12-12T17:15:07.388576: stdout: [ +138 ms] Building App.framework for arm64...
2019-12-12T17:15:07.390287: stdout: [   +1 ms] executing: xcrun --sdk iphoneos --show-sdk-path
2019-12-12T17:15:07.398276: stdout: [   +7 ms] /Applications/Xcode-11.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.0.sdk
2019-12-12T17:15:07.398536: stdout: [        ] executing: xcrun cc -arch arm64 -isysroot /Applications/Xcode-11.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.0.sdk -c build/aot/arm64/snapshot_assembly.S -o build/aot/arm64/snapshot_assembly.o
2019-12-12T17:15:08.627420: stdout: [+1228 ms] executing: xcrun clang -arch arm64 -miphoneos-version-min=8.0 -dynamiclib -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -install_name @rpath/App.framework/App -isysroot /Applications/Xcode-11.0.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.0.sdk -o build/aot/arm64/App.framework/App build/aot/arm64/snapshot_assembly.o
2019-12-12T17:15:08.685390: stdout: [  +58 ms] executing: lipo build/aot/arm64/App.framework/App -create -output build/aot/App.framework/App
2019-12-12T17:15:08.711287: stdout: [  +25 ms] Building AOT snapshot in release mode (ios-release)... (completed in 13.2s)
2019-12-12T17:15:08.711451: stdout: [        ] Built to build/aot/.
2019-12-12T17:15:08.712872: stdout: [   +1 ms] "flutter aot" took 13,271ms.
2019-12-12T17:15:08.725780: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:15:08.735035: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter clean in /var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app
2019-12-12T17:15:11.463310: stdout: Cleaning Xcode workspace...                                         2.1s
2019-12-12T17:15:11.488199: stdout: Deleting build...                                                   21ms
2019-12-12T17:15:11.504123: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:15:11.504379: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter build ios --release in /var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app
2019-12-12T17:15:13.421396: stdout: Building com.example.sampleFlutterApp for device (ios-release)...
2019-12-12T17:15:14.520277: stdout: Automatically signing iOS for device deployment using specified development team in Xcode project: S8QB4VV633
2019-12-12T17:15:58.055835: stdout: Running Xcode build...                                          
2019-12-12T17:15:58.064740: stdout: Xcode build done.                                           43.5s
2019-12-12T17:15:59.999270: stdout: Built /private/var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app/build/ios/iphoneos/sample_flutter_app.app.
2019-12-12T17:16:00.018054: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:16:00.018154: 
Executing: tar -zcf build/app.ipa /var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app/build/ios/Release-iphoneos/Runner.app/ in /var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app
2019-12-12T17:16:00.024340: stderr: tar: /var/folders/mv/lj_4rn9d1499dlqfgvd0x0080000gn/T/sample_flutter_app/build/ios/Release-iphoneos/Runner.app: Cannot stat: No such file or directory
2019-12-12T17:16:00.024428: stderr: tar: Error exit delayed from previous errors.
2019-12-12T17:16:00.024647: "tar" exit code: 1
2019-12-12T17:16:00.031875: Task failed: Executable "tar" failed with exit code 1.2019-12-12T17:16:00.032126: 

Stack trace:
2019-12-12T17:16:00.047584: package:flutter_devicelab/framework/utils.dart 84:3        fail
package:flutter_devicelab/framework/utils.dart 327:5       exec
===== asynchronous gap ===========================
dart:async                                                 _asyncErrorWrapperHelper
package:flutter_devicelab/framework/framework.dart         _TaskRunner._performTask.
package:stack_trace                                        Chain.capture
package:flutter_devicelab/framework/framework.dart 154:11  _TaskRunner._performTask
package:flutter_devicelab/framework/framework.dart 88:41   _TaskRunner.run

2019-12-12T17:16:00.048363: 

═══════════╡ ••• Checking running Dart processes after task... ••• ╞════════════

2019-12-12T17:16:00.080795: Cleaning up after task...
2019-12-12T17:16:00.111992: Task execution finished

Task failed with the following reason:
Task failed: Executable "tar" failed with exit code 1.
Deleting build/ directories, if any.
Deleting /Users/flutter/.cocoon/flutter/dev/benchmarks/complex_layout/build
2019-12-12T17:16:21.473940: Observatory listening on http://127.0.0.1:20000/
2019-12-12T17:16:22.208732: Running task.
2019-12-12T17:16:22.209477: 

══════════════════╡ ••• Checking running Dart processes ••• ╞═══════════════════

2019-12-12T17:16:22.301181: RunningProcesses{pid: 22488, commandLine: /Users/flutter/.cocoon/flutter/bin/cache/dart-sdk/bin/dart --enable-vm-service=20000 --no-pause-isolates-on-exit --disable-service-auth-codes bin/tasks/basic_material_app_ios__compile.dart --cloud-auth-token=ya29.c.Kl61B9ujZn4vbNA0XqZ9u5sHnklNMC8D1jaECB_O_eO05Imae3mS07pT0l807JGMz2SWgUetWWDAwPSnvkCLrVmlegHgi8f2hEgBqL_E5--6qpf5lngMAj6Re6bYtYOv, creationDate: 2019-12-12 17:16:21.000}
RunningProcesses{pid: 61050, commandLine: dart bin/agent.dart ci -c config.yaml, creationDate: 2019-11-29 20:31:53.000}
2019-12-12T17:16:22.416392: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter create --template=app sample_flutter_app in /var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T
2019-12-12T17:16:22.872375: stdout: Creating project sample_flutter_app... androidx: true
2019-12-12T17:16:22.898619: stdout:   sample_flutter_app/ios/Runner.xcworkspace/contents.xcworkspacedata (created)
2019-12-12T17:16:22.900550: stdout:   sample_flutter_app/ios/Runner/Info.plist (created)
2019-12-12T17:16:22.909210: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@2x.png (created)
2019-12-12T17:16:22.910002: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png (created)
2019-12-12T17:16:22.910662: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md (created)
2019-12-12T17:16:22.911366: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json (created)
2019-12-12T17:16:22.912018: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage.png (created)
2019-12-12T17:16:22.912713: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@2x.png (created)
2019-12-12T17:16:22.913399: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@1x.png (created)
2019-12-12T17:16:22.914068: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@1x.png (created)
2019-12-12T17:16:22.914695: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@1x.png (created)
2019-12-12T17:16:22.915416: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-1024x1024@1x.png (created)
2019-12-12T17:16:22.916099: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-83.5x83.5@2x.png (created)
2019-12-12T17:16:22.916800: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@3x.png (created)
2019-12-12T17:16:22.917542: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json (created)
2019-12-12T17:16:22.918194: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-20x20@2x.png (created)
2019-12-12T17:16:22.918912: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@3x.png (created)
2019-12-12T17:16:22.919599: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@2x.png (created)
2019-12-12T17:16:22.920641: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@3x.png (created)
2019-12-12T17:16:22.921437: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-60x60@2x.png (created)
2019-12-12T17:16:22.922077: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-76x76@1x.png (created)
2019-12-12T17:16:22.922742: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-40x40@3x.png (created)
2019-12-12T17:16:22.923402: stdout:   sample_flutter_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Icon-App-29x29@2x.png (created)
2019-12-12T17:16:22.924083: stdout:   sample_flutter_app/ios/Runner/Base.lproj/LaunchScreen.storyboard (created)
2019-12-12T17:16:22.924991: stdout:   sample_flutter_app/ios/Runner/Base.lproj/Main.storyboard (created)
2019-12-12T17:16:22.925617: stdout:   sample_flutter_app/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata (created)
2019-12-12T17:16:22.926410: stdout:   sample_flutter_app/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme (created)
2019-12-12T17:16:22.932681: stdout:   sample_flutter_app/ios/Flutter/Debug.xcconfig (created)
2019-12-12T17:16:22.933355: stdout:   sample_flutter_app/ios/Flutter/Release.xcconfig (created)
2019-12-12T17:16:22.934018: stdout:   sample_flutter_app/ios/Flutter/AppFrameworkInfo.plist (created)
2019-12-12T17:16:22.934659: stdout:   sample_flutter_app/ios/.gitignore (created)
2019-12-12T17:16:22.935269: stdout:   sample_flutter_app/test/widget_test.dart (created)
2019-12-12T17:16:22.938356: stdout:   sample_flutter_app/sample_flutter_app.iml (created)
2019-12-12T17:16:22.939572: stdout:   sample_flutter_app/.gitignore (created)
2019-12-12T17:16:22.940592: stdout:   sample_flutter_app/.metadata (created)
2019-12-12T17:16:22.941445: stdout:   sample_flutter_app/android/app/src/profile/AndroidManifest.xml (created)
2019-12-12T17:16:22.942337: stdout:   sample_flutter_app/android/app/src/main/res/mipmap-mdpi/ic_launcher.png (created)
2019-12-12T17:16:22.943167: stdout:   sample_flutter_app/android/app/src/main/res/mipmap-hdpi/ic_launcher.png (created)
2019-12-12T17:16:22.943995: stdout:   sample_flutter_app/android/app/src/main/res/drawable/launch_background.xml (created)
2019-12-12T17:16:22.944869: stdout:   sample_flutter_app/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png (created)
2019-12-12T17:16:22.945613: stdout:   sample_flutter_app/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png (created)
2019-12-12T17:16:22.946399: stdout:   sample_flutter_app/android/app/src/main/res/values/styles.xml (created)
2019-12-12T17:16:22.947137: stdout:   sample_flutter_app/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png (created)
2019-12-12T17:16:22.948089: stdout:   sample_flutter_app/android/app/src/main/AndroidManifest.xml (created)
2019-12-12T17:16:22.949213: stdout:   sample_flutter_app/android/app/src/debug/AndroidManifest.xml (created)
2019-12-12T17:16:22.950216: stdout:   sample_flutter_app/android/gradle/wrapper/gradle-wrapper.properties (created)
2019-12-12T17:16:22.951106: stdout:   sample_flutter_app/android/gradle.properties (created)
2019-12-12T17:16:22.951841: stdout:   sample_flutter_app/android/.gitignore (created)
2019-12-12T17:16:22.952670: stdout:   sample_flutter_app/android/settings.gradle (created)
2019-12-12T17:16:22.953474: stdout:   sample_flutter_app/android/app/build.gradle (created)
2019-12-12T17:16:22.954807: stdout:   sample_flutter_app/android/app/src/main/kotlin/com/example/sample_flutter_app/MainActivity.kt (created)
2019-12-12T17:16:22.973668: stdout:   sample_flutter_app/android/build.gradle (created)
2019-12-12T17:16:22.975046: stdout:   sample_flutter_app/android/sample_flutter_app_android.iml (created)
2019-12-12T17:16:22.976048: stdout:   sample_flutter_app/pubspec.yaml (created)
2019-12-12T17:16:22.977611: stdout:   sample_flutter_app/README.md (created)
2019-12-12T17:16:22.978320: stdout:   sample_flutter_app/ios/Runner/Runner-Bridging-Header.h (created)
2019-12-12T17:16:22.978987: stdout:   sample_flutter_app/ios/Runner/AppDelegate.swift (created)
2019-12-12T17:16:22.979617: stdout:   sample_flutter_app/ios/Runner.xcodeproj/project.pbxproj (created)
2019-12-12T17:16:22.985298: stdout:   sample_flutter_app/lib/main.dart (created)
2019-12-12T17:16:22.987815: stdout:   sample_flutter_app/.idea/runConfigurations/main_dart.xml (created)
2019-12-12T17:16:22.988545: stdout:   sample_flutter_app/.idea/libraries/Flutter_for_Android.xml (created)
2019-12-12T17:16:22.989514: stdout:   sample_flutter_app/.idea/libraries/Dart_SDK.xml (created)
2019-12-12T17:16:22.991290: stdout:   sample_flutter_app/.idea/libraries/KotlinJavaRuntime.xml (created)
2019-12-12T17:16:22.991389: stdout:   sample_flutter_app/.idea/modules.xml (created)
2019-12-12T17:16:22.992226: stdout:   sample_flutter_app/.idea/workspace.xml (created)
2019-12-12T17:16:25.199260: stdout: Running "flutter pub get" in sample_flutter_app...                  2.1s
2019-12-12T17:16:25.343214: stdout: Wrote 68 files.
stdout: 
stdout: All done!
2019-12-12T17:16:26.481146: stdout: [✓] Flutter: is fully installed. (Channel unknown, v1.13.2-pre.23, on Mac OS X 10.14.6 18G103, locale en-US)
stdout: [✗] Android toolchain - develop for Android devices: is not installed.
stdout: [✓] Xcode - develop for iOS and macOS: is fully installed. (Xcode 11.0)
stdout: [!] Android Studio: is not available. (not installed)
stdout: [✓] Connected device: is fully installed. (1 available)
stdout: 
stdout: Run "flutter doctor" for information about installing additional components.
stdout: 
2019-12-12T17:16:26.481237: stdout: In order to run your application, type:
stdout: 
stdout:   $ cd sample_flutter_app
stdout:   $ flutter run
stdout: 
stdout: Your application code is in sample_flutter_app/lib/main.dart.
stdout: 
2019-12-12T17:16:26.495709: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:16:26.503590: 
Executing: /Users/flutter/.cocoon/flutter/bin/cache/artifacts/libimobiledevice/idevice_id -l in /var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app with environment {DYLD_LIBRARY_PATH: /Users/flutter/.cocoon/flutter/bin/cache/artifacts/libimobiledevice:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/usbmuxd:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/libplist:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/openssl:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/ideviceinstaller:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/ios-deploy:/Users/flutter/.cocoon/flutter/bin/cache/artifacts/libzip}
2019-12-12T17:16:26.515183: stdout: 0f13aa3f7f48d3fa92ab08691369138b0a4b7153
2019-12-12T17:16:26.517560: "/Users/flutter/.cocoon/flutter/bin/cache/artifacts/libimobiledevice/idevice_id" exit code: 0
2019-12-12T17:16:26.520238: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter packages get in /var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app
2019-12-12T17:16:27.364355: stdout: Running "flutter pub get" in sample_flutter_app...                  0.3s
2019-12-12T17:16:27.489437: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:16:27.490578: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter clean in /var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app
2019-12-12T17:16:29.968957: stdout: Cleaning Xcode workspace...                                         1.9s
2019-12-12T17:16:29.972764: stdout: Deleting .dart_tool...                                               0ms
2019-12-12T17:16:29.989413: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:16:29.989909: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter build aot -v --extra-gen-snapshot-options=--print_snapshot_sizes --release --no-pub --target-platform ios in /var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app
2019-12-12T17:16:30.301781: stdout: [  +23 ms] executing: [/Users/flutter/.cocoon/flutter/] git -c log.showSignature=false log -n 1 --pretty=format:%H
2019-12-12T17:16:30.325951: stdout: [  +33 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
2019-12-12T17:16:30.326032: stdout: [        ] 7a7e2bb247c98456861de112cc10e57a559eef82
2019-12-12T17:16:30.326468: stdout: [        ] executing: [/Users/flutter/.cocoon/flutter/] git describe --match v*.*.* --first-parent --long --tags
2019-12-12T17:16:30.342992: stdout: [  +16 ms] Exit code 0 from: git describe --match v*.*.* --first-parent --long --tags
stdout: [        ] v1.13.1-23-g7a7e2bb24
2019-12-12T17:16:30.350919: stdout: [   +7 ms] executing: [/Users/flutter/.cocoon/flutter/] git rev-parse --abbrev-ref --symbolic @{u}
2019-12-12T17:16:30.359525: stdout: [   +8 ms] Exit code 128 from: git rev-parse --abbrev-ref --symbolic @{u}
stdout: [        ] fatal: HEAD does not point to a branch
2019-12-12T17:16:30.369992: stdout: [  +10 ms] executing: [/Users/flutter/.cocoon/flutter/] git rev-parse --abbrev-ref HEAD
2019-12-12T17:16:30.378319: stdout: [   +8 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
stdout: [        ] HEAD
2019-12-12T17:16:30.400304: stdout: [  +21 ms] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
2019-12-12T17:16:30.400443: stdout: [        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
2019-12-12T17:16:30.403084: stdout: [   +2 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
2019-12-12T17:16:30.403233: stdout: [        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
2019-12-12T17:16:30.403288: stdout: [        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
2019-12-12T17:16:30.403326: stdout: [        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
2019-12-12T17:16:30.403362: stdout: [        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
2019-12-12T17:16:30.409748: stdout: [   +6 ms] Artifact Instance of 'MaterialFonts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'GradleWrapper' is not required, skipping update.
stdout: [        ] Artifact Instance of 'AndroidMavenArtifacts' is not required, skipping update.
2019-12-12T17:16:30.409831: stdout: [        ] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
2019-12-12T17:16:30.412668: stdout: [   +2 ms] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
stdout: [        ] Artifact Instance of 'FlutterSdk' is not required, skipping update.
stdout: [        ] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
2019-12-12T17:16:30.412742: stdout: [        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
2019-12-12T17:16:30.412779: stdout: [        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
2019-12-12T17:16:30.412869: stdout: [        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
2019-12-12T17:16:30.412955: stdout: [        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
2019-12-12T17:16:30.413022: stdout: [        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
2019-12-12T17:16:30.413070: stdout: [        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
2019-12-12T17:16:30.413162: stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
2019-12-12T17:16:30.413229: stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
2019-12-12T17:16:30.413298: stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
2019-12-12T17:16:30.413351: stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
2019-12-12T17:16:30.413389: stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
2019-12-12T17:16:30.413441: stdout: [        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
2019-12-12T17:16:30.424273: stdout: [   +9 ms] Building AOT snapshot in release mode (ios-release)...
2019-12-12T17:16:30.461790: stdout: [  +38 ms] Compiling Dart to kernel: /private/var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app/lib/main.dart
2019-12-12T17:16:30.472415: stdout: [  +10 ms] /Users/flutter/.cocoon/flutter/bin/cache/dart-sdk/bin/dart /Users/flutter/.cocoon/flutter/bin/cache/artifacts/engine/darwin-x64/frontend_server.dart.snapshot --sdk-root /Users/flutter/.cocoon/flutter/bin/cache/artifacts/engine/common/flutter_patched_sdk_product/ --target=flutter -Ddart.developer.causal_async_stacks=true -Ddart.vm.profile=false -Ddart.vm.product=true --bytecode-options=source-positions --aot --tfa --packages .packages --output-dill build/aot/app.dill --depfile build/aot/kernel_compile.d package:sample_flutter_app/main.dart
2019-12-12T17:16:37.609132: stdout: [+7136 ms] Extra gen_snapshot options: [--print_snapshot_sizes]
2019-12-12T17:16:37.612075: stdout: [   +3 ms] executing: /Users/flutter/.cocoon/flutter/bin/cache/artifacts/engine/ios-release/gen_snapshot_arm64 --causal_async_stacks --deterministic --print_snapshot_sizes --snapshot_kind=app-aot-assembly --assembly=build/aot/arm64/snapshot_assembly.S build/aot/app.dill
2019-12-12T17:16:42.009458: stdout: [+4397 ms] VMIsolate(CodeSize): 4755
stdout: [        ] Isolate(CodeSize): 723206
stdout: [        ] ReadOnlyData(CodeSize): 900192
2019-12-12T17:16:42.009594: stdout: [        ] Instructions(CodeSize): 2461376
2019-12-12T17:16:42.009664: stdout: [        ] Total(CodeSize): 4089529
2019-12-12T17:16:42.144896: stdout: [ +135 ms] Building App.framework for arm64...
2019-12-12T17:16:42.146588: stdout: [   +1 ms] executing: xcrun --sdk iphoneos --show-sdk-path
2019-12-12T17:16:42.153464: stdout: [   +6 ms] /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.0.sdk
2019-12-12T17:16:42.153737: stdout: [        ] executing: xcrun cc -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.0.sdk -c build/aot/arm64/snapshot_assembly.S -o build/aot/arm64/snapshot_assembly.o
2019-12-12T17:16:43.197703: stdout: [+1043 ms] executing: xcrun clang -arch arm64 -miphoneos-version-min=8.0 -dynamiclib -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -install_name @rpath/App.framework/App -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.0.sdk -o build/aot/arm64/App.framework/App build/aot/arm64/snapshot_assembly.o
2019-12-12T17:16:43.254689: stdout: [  +57 ms] executing: lipo build/aot/arm64/App.framework/App -create -output build/aot/App.framework/App
2019-12-12T17:16:43.278793: stdout: [  +24 ms] Building AOT snapshot in release mode (ios-release)... (completed in 12.8s)
2019-12-12T17:16:43.278982: stdout: [        ] Built to build/aot/.
2019-12-12T17:16:43.280381: stdout: [   +1 ms] "flutter aot" took 12,913ms.
2019-12-12T17:16:43.293701: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:16:43.302800: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter clean in /var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app
2019-12-12T17:16:45.706116: stdout: Cleaning Xcode workspace...                                         1.9s
2019-12-12T17:16:45.714402: stdout: Deleting build...                                                    4ms
2019-12-12T17:16:45.731099: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:16:45.731402: 
Executing: /Users/flutter/.cocoon/flutter/bin/flutter build ios --release in /var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app
2019-12-12T17:16:47.538630: stdout: Building com.example.sampleFlutterApp for device (ios-release)...
2019-12-12T17:16:48.430201: stdout: Automatically signing iOS for device deployment using specified development team in Xcode project: S8QB4VV633
2019-12-12T17:17:26.412411: stdout: Running Xcode build...                                          
2019-12-12T17:17:26.420698: stdout: Xcode build done.                                           37.9s
2019-12-12T17:17:27.951026: stdout: Built /private/var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app/build/ios/iphoneos/sample_flutter_app.app.
2019-12-12T17:17:27.971224: "/Users/flutter/.cocoon/flutter/bin/flutter" exit code: 0
2019-12-12T17:17:27.971320: 
Executing: tar -zcf build/app.ipa /var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app/build/ios/Release-iphoneos/Runner.app/ in /var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app
2019-12-12T17:17:27.976965: stderr: tar: /var/folders/ds/_jtxgnxx0qldrlbw4dsk9ngh0000gn/T/sample_flutter_app/build/ios/Release-iphoneos/Runner.app: Cannot stat: No such file or directory
stderr: tar: Error exit delayed from previous errors.
2019-12-12T17:17:27.977224: "tar" exit code: 1
2019-12-12T17:17:27.984474: Task failed: Executable "tar" failed with exit code 1.2019-12-12T17:17:27.984718: 

Stack trace:
2019-12-12T17:17:28.000115: package:flutter_devicelab/framework/utils.dart 84:3        fail
package:flutter_devicelab/framework/utils.dart 327:5       exec
===== asynchronous gap ===========================
dart:async                                                 _asyncErrorWrapperHelper
package:flutter_devicelab/framework/framework.dart         _TaskRunner._performTask.
package:stack_trace                                        Chain.capture
package:flutter_devicelab/framework/framework.dart 154:11  _TaskRunner._performTask
package:flutter_devicelab/framework/framework.dart 88:41   _TaskRunner.run

2019-12-12T17:17:28.000871: 

═══════════╡ ••• Checking running Dart processes after task... ••• ╞════════════

2019-12-12T17:17:28.028359: Cleaning up after task...
2019-12-12T17:17:28.055112: Task execution finished

Task failed with the following reason:
Task failed: Executable "tar" failed with exit code 1.