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integration_ui test is flaky #19826

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Closed
integration_ui test is flaky#19826
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c: contributor-productivityTeam-specific productivity, code health, technical debt.c: flakeTests that sometimes, but not always, incorrectly passteam-infraOwned by Infrastructure team

Description

@amirh
amirh
opened on Jul 26, 2018

It failed on #19785 with (log):

2018-07-25T16:31:16.428793: stdout: [        ] /Users/flutter/.cocoon/flutter/bin/cache/dart-sdk/bin/dart /Users/flutter/.cocoon/flutter/dev/integration_tests/ui/test_driver/screenshot_test.dart --packages=/Users/flutter/.cocoon/flutter/dev/integration_tests/ui/.packages -rexpanded --preview-dart-2
2018-07-25T16:31:19.566709: stdout: [+3137 ms] 00:00 �[32m+0�[0m: FlutterDriver (setUpAll)�[0m
2018-07-25T16:31:19.610419: stderr: [  +42 ms] [info ] FlutterDriver: Connecting to Flutter application at http://127.0.0.1:55437/
2018-07-25T16:31:20.253804: stderr: [ +644 ms] [trace] FlutterDriver: Isolate found with number: 665842189
2018-07-25T16:31:20.511030: stderr: [ +257 ms] [trace] FlutterDriver: Isolate is paused at start.
2018-07-25T16:31:20.529121: stderr: [  +18 ms] [trace] FlutterDriver: Attempting to resume isolate
2018-07-25T16:31:20.546549: stderr: [  +17 ms] [trace] FlutterDriver: Waiting for service extension
2018-07-25T16:31:22.430088: stderr: [+1883 ms] [info ] FlutterDriver: Connected to Flutter application.
2018-07-25T16:31:22.443205: stdout: [  +13 ms] 00:02 �[32m+0�[0m: FlutterDriver should take screenshot�[0m
2018-07-25T16:31:30.452638: stdout: [+8009 ms] 00:10 �[32m+0�[0m�[31m -1�[0m: FlutterDriver should take screenshot �[1m�[31m[E]�[0m�[0m
2018-07-25T16:31:30.454410: stdout: [   +1 ms]   JSON-RPC error -32602 (invalid parameters): Invalid params
2018-07-25T16:31:30.479301: stdout: [  +24 ms]   package:json_rpc_2/src/client.dart 110:64             Client.sendRequest
2018-07-25T16:31:30.480184: stdout: [        ]   package:json_rpc_2/src/peer.dart 68:15                Peer.sendRequest
stdout: [        ]   package:flutter_driver/src/driver/driver.dart 627:53  FlutterDriver.screenshot
stdout: [        ]   ===== asynchronous gap ===========================
2018-07-25T16:31:30.480330: stdout: [        ]   dart:async/zone.dart 1055:19                          _CustomZone.registerUnaryCallback
stdout: [        ]   dart:async/runtime/libasync_patch.dart 77:23          _asyncThenWrapperHelper
2018-07-25T16:31:30.481558: stdout: [        ]   package:flutter_driver/src/driver/driver.dart         FlutterDriver.screenshot
stdout: [        ]   test_driver/screenshot_test.dart 32:57                main..
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1055:19                          _CustomZone.registerUnaryCallback
stdout: [        ]   dart:async/runtime/libasync_patch.dart 77:23          _asyncThenWrapperHelper
stdout: [        ]   test_driver/screenshot_test.dart                      main..
stdout: [        ]   package:test/src/backend/declarer.dart 161:27         Declarer.test...
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1055:19                          _CustomZone.registerUnaryCallback
stdout: [        ]   dart:async/runtime/libasync_patch.dart 77:23          _asyncThenWrapperHelper
stdout: [        ]   package:test/src/backend/declarer.dart                Declarer.test...
stdout: [        ]   package:test/src/backend/invoker.dart 249:15          Invoker.waitForOutstandingCallbacks.
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1047:19                          _CustomZone.registerCallback
stdout: [        ]   dart:async/zone.dart 964:22                           _CustomZone.bindCallbackGuarded
stdout: [        ]   dart:async/timer.dart 52:45                           new Timer
stdout: [        ]   dart:async/timer.dart 87:9                            Timer.run
stdout: [        ]   dart:async/future.dart 172:11                         new Future
stdout: [        ]   package:test/src/backend/invoker.dart 402:15          Invoker._onRun...
stdout: [        ] 00:10 �[32m+0�[0m�[31m -1�[0m: FlutterDriver (tearDownAll)�[0m
2018-07-25T16:31:30.514731: stdout: [  +33 ms] 00:10 �[32m+0�[0m�[31m -1�[0m: �[31mSome tests failed.�[0m
2018-07-25T16:31:30.530842: stderr: [  +14 ms] Unhandled exception:
stderr: [        ] Dummy exception to set exit code.
stderr: [        ] #0      _rootHandleUncaughtError. (dart:async/zone.dart:1114:29)
stderr: [        ] #1      _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
stderr: [        ] #2      _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
stderr: [        ] #3      _Timer._runTimers (dart:isolate/runtime/libtimer_impl.dart:391:30)
stderr: [        ] #4      _Timer._handleMessage (dart:isolate/runtime/libtimer_impl.dart:416:5)
stderr: [        ] #5      _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:165:12)
2018-07-25T16:31:30.583529: stdout: [  +53 ms] Stopping application instance.
2018-07-25T16:31:30.583612: stdout: [        ] Stopping application.
2018-07-25T16:31:30.584382: stdout: [        ] /Volumes/DevicelabAndroid/sdk/platform-tools/adb -s ZY2245H6ZS shell am force-stop com.yourcompany.integration_ui
2018-07-25T16:31:31.542652: stdout: [ +958 ms] "flutter drive" took 56,459ms.
2018-07-25T16:31:31.545161: stderr: Driver tests failed: 255
2018-07-25T16:31:31.545260: stderr: 
2018-07-25T16:31:31.545769: stderr: #0      throwToolExit (package:flutter_tools/src/base/common.dart:26:3)
stderr: #1      _runTests (package:flutter_tools/src/commands/drive.dart:303:5)
stderr: 
2018-07-25T16:31:31.545895: stderr: #2      DriveCommand.runCommand (package:flutter_tools/src/commands/drive.dart:126:23)
stderr: 
stderr: #3      FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:347:18)
stderr: 
stderr: #4      FlutterCommand.run. (package:flutter_tools/src/runner/flutter_command.dart:282:33)
stderr: 
2018-07-25T16:31:31.545988: stderr: #5      AppContext.run. (package:flutter_tools/src/base/context.dart:142:29)
stderr: 
stderr: #6      _rootRun (dart:async/zone.dart:1126:13)
stderr: #7      _CustomZone.run (dart:async/zone.dart:1023:19)
stderr: #8      _runZoned (dart:async/zone.dart:1518:10)
stderr: #9      runZoned (dart:async/zone.dart:1465:12)
2018-07-25T16:31:31.546073: stderr: #10     AppContext.run (package:flutter_tools/src/base/context.dart:141:18)
stderr: 
stderr: #11     FlutterCommand.run (package:flutter_tools/src/runner/flutter_command.dart:273:20)
stderr: #12     CommandRunner.runCommand (package:args/command_runner.dart:194:27)
stderr: 
2018-07-25T16:31:31.546175: stderr: #13     FlutterCommandRunner.runCommand. (package:flutter_tools/src/runner/flutter_command_runner.dart:346:21)
stderr: 
stderr: #14     AppContext.run. (package:flutter_tools/src/base/context.dart:142:29)
stderr: 
stderr: #15     _rootRun (dart:async/zone.dart:1126:13)
stderr: #16     _CustomZone.run (dart:async/zone.dart:1023:19)
2018-07-25T16:31:31.546262: stderr: #17     _runZoned (dart:async/zone.dart:1518:10)
stderr: #18     runZoned (dart:async/zone.dart:1465:12)
stderr: #19     AppContext.run (package:flutter_tools/src/base/context.dart:141:18)
stderr: 
stderr: #20     FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:302:19)
stderr: 
stderr: #21     CommandRunner.run. (package:args/command_runner.dart:109:29)
2018-07-25T16:31:31.546348: stderr: #22     new Future.sync (dart:async/future.dart:222:31)
stderr: #23     CommandRunner.run (package:args/command_runner.dart:109:11)
stderr: #24     FlutterCommandRunner.run (package:flutter_tools/src/runner/flutter_command_runner.dart:211:18)
stderr: #25     run. (package:flutter_tools/runner.dart:59:20)
stderr: 
2018-07-25T16:31:31.546440: stderr: #26     AppContext.run. (package:flutter_tools/src/base/context.dart:142:29)
stderr: 
stderr: #27     _rootRun (dart:async/zone.dart:1126:13)
stderr: #28     _CustomZone.run (dart:async/zone.dart:1023:19)
stderr: #29     _runZoned (dart:async/zone.dart:1518:10)
stderr: #30     runZoned (dart:async/zone.dart:1465:12)
2018-07-25T16:31:31.546526: stderr: #31     AppContext.run (package:flutter_tools/src/base/context.dart:141:18)
stderr: 
stderr: #32     runInContext (package:flutter_tools/src/context_runner.dart:42:24)
stderr: 
stderr: #33     run (package:flutter_tools/runner.dart:50:10)
stderr: #34     main (package:flutter_tools/executable.dart:51:9)
2018-07-25T16:31:31.546653: stderr: 
stderr: #35     main (file:///Users/flutter/.cocoon/flutter/packages/flutter_tools/bin/flutter_tools.dart:8:3)
stderr: #36     _startIsolate. (dart:isolate/runtime/libisolate_patch.dart:277:32)
stderr: #37     _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:165:12)
stderr: 
stderr: 
2018-07-25T16:31:31.572344: exitcode: 255
2018-07-25T16:31:31.590162: Task failed: Executable failed with exit code 255.2018-07-25T16:31:31.590267: 

Stack trace:
2018-07-25T16:31:31.626372: package:flutter_devicelab/framework/utils.dart 77:3        fail
package:flutter_devicelab/framework/utils.dart 283:5       exec
===== asynchronous gap ===========================
dart:async                                                 _AsyncAwaitCompleter.completeError
package:flutter_devicelab/framework/utils.dart             exec
===== asynchronous gap ===========================
dart:async                                                 _asyncThenWrapperHelper
package:flutter_devicelab/framework/utils.dart             exec
package:flutter_devicelab/framework/utils.dart 331:10      flutter
package:flutter_devicelab/tasks/integration_ui.dart 32:13  runEndToEndTests.
===== asynchronous gap ===========================
dart:async                                                 _asyncThenWrapperHelper
package:flutter_devicelab/tasks/integration_ui.dart        runEndToEndTests.
package:flutter_devicelab/framework/utils.dart 369:24      inDirectory
===== asynchronous gap ===========================
dart:async                                                 _asyncThenWrapperHelper
package:flutter_devicelab/tasks/integration_ui.dart        runEndToEndTests
package:flutter_devicelab/framework/framework.dart 125:32  _TaskRunner._performTask.

It previously flaked on #19721 with (log):

2018-07-25T11:43:50.558193: stdout: [        ] /Users/flutter/.cocoon/flutter/bin/cache/dart-sdk/bin/dart /Users/flutter/.cocoon/flutter/dev/integration_tests/ui/test_driver/screenshot_test.dart --packages=/Users/flutter/.cocoon/flutter/dev/integration_tests/ui/.packages -rexpanded --preview-dart-2
2018-07-25T11:43:53.776589: stdout: [+3218 ms] 00:00 �[32m+0�[0m: FlutterDriver (setUpAll)�[0m
2018-07-25T11:43:53.825194: stderr: [  +47 ms] [info ] FlutterDriver: Connecting to Flutter application at http://127.0.0.1:58659/
2018-07-25T11:43:54.477321: stdout: [ +653 ms] 00:00 �[32m+0�[0m�[31m -1�[0m: FlutterDriver (setUpAll) �[1m�[31m[E]�[0m�[0m
2018-07-25T11:43:54.477980: stdout: [        ]   Bad state: No element
2018-07-25T11:43:54.502289: stdout: [  +23 ms]   dart:core/runtime/libarray.dart 165:5                 List.first
2018-07-25T11:43:54.502688: stdout: [        ]   package:flutter_driver/src/driver/driver.dart 181:28  FlutterDriver.connect
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/future_impl.dart 22:43                     _Completer.completeError
stdout: [        ]   dart:async/runtime/libasync_patch.dart 40:18          _AsyncAwaitCompleter.completeError
stdout: [        ]   package:flutter_driver/src/driver/driver.dart         FlutterDriver.connect
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1055:19                          _CustomZone.registerUnaryCallback
stdout: [        ]   dart:async/runtime/libasync_patch.dart 77:23          _asyncThenWrapperHelper
stdout: [        ]   package:flutter_driver/src/driver/driver.dart         FlutterDriver.connect
stdout: [        ]   test_driver/screenshot_test.dart 14:36                main..
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1055:19                          _CustomZone.registerUnaryCallback
stdout: [        ]   dart:async/zone.dart 969:22                           _CustomZone.bindUnaryCallbackGuarded
stdout: [        ]   dart:async/future.dart 522:34                         Future.doWhile
stdout: [        ]   dart:async/future.dart 482:12                         Future.forEach
stdout: [        ]   package:test/src/backend/declarer.dart 272:36         Declarer._setUpAll..
stdout: [        ]   dart:async/zone.dart 1126:13                          _rootRun
stdout: [        ]   dart:async/zone.dart 1023:19                          _CustomZone.run
stdout: [        ]   dart:async/zone.dart 1518:10                          _runZoned
2018-07-25T11:43:54.502804: stdout: [        ]   dart:async/zone.dart 1465:12                          runZoned
stdout: [        ]   package:test/src/backend/declarer.dart 272:14         Declarer._setUpAll.
stdout: [        ]   package:test/src/backend/invoker.dart 403:25          Invoker._onRun....
2018-07-25T11:43:54.502889: stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1047:19                          _CustomZone.registerCallback
stdout: [        ]   dart:async/zone.dart 964:22                           _CustomZone.bindCallbackGuarded
stdout: [        ]   dart:async/timer.dart 52:45                           new Timer
2018-07-25T11:43:54.502988: stdout: [        ]   dart:async/timer.dart 87:9                            Timer.run
2018-07-25T11:43:54.503066: stdout: [        ]   dart:async/future.dart 172:11                         new Future
stdout: [        ]   package:test/src/backend/invoker.dart 402:15          Invoker._onRun...
2018-07-25T11:43:54.505365: stdout: [   +2 ms] 00:00 �[32m+0�[0m�[31m -1�[0m: FlutterDriver (tearDownAll)�[0m
2018-07-25T11:43:54.531740: stdout: [  +26 ms] 00:00 �[32m+0�[0m�[31m -2�[0m: FlutterDriver (tearDownAll) �[1m�[31m[E]�[0m�[0m
2018-07-25T11:43:54.537536: stdout: [   +5 ms]   NoSuchMethodError: The method 'close' was called on null.
2018-07-25T11:43:54.537700: stdout: [        ]   Receiver: null
stdout: [        ]   Tried calling: close()
2018-07-25T11:43:54.544266: stdout: [   +5 ms]   dart:core/runtime/libobject_patch.dart 46:5                   Object.noSuchMethod
stdout: [        ]   test_driver/screenshot_test.dart 18:20                        main..
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/future_impl.dart 22:43                             _Completer.completeError
stdout: [        ]   dart:async/runtime/libasync_patch.dart 43:20                  _AsyncAwaitCompleter.completeError.
stdout: [        ]   package:stack_trace/src/stack_zone_specification.dart 209:15  StackZoneSpecification._run
stdout: [        ]   package:stack_trace/src/stack_zone_specification.dart 119:48  StackZoneSpecification._registerCallback.
stdout: [        ]   dart:async/zone.dart 1122:38                                  _rootRun
stdout: [        ]   dart:async/zone.dart 1023:19                                  _CustomZone.run
stdout: [        ]   dart:async/zone.dart 925:7                                    _CustomZone.runGuarded
stdout: [        ]   dart:async/zone.dart 965:23                                   _CustomZone.bindCallbackGuarded.
stdout: [        ]   package:stack_trace/src/stack_zone_specification.dart 209:15  StackZoneSpecification._run
stdout: [        ]   package:stack_trace/src/stack_zone_specification.dart 119:48  StackZoneSpecification._registerCallback.
2018-07-25T11:43:54.544574: stdout: [        ]   dart:async/zone.dart 1126:13                                  _rootRun
stdout: [        ]   dart:async/zone.dart 1023:19                                  _CustomZone.run
2018-07-25T11:43:54.544690: stdout: [        ]   dart:async/zone.dart 925:7                                    _CustomZone.runGuarded
2018-07-25T11:43:54.544830: stdout: [        ]   dart:async/zone.dart 965:23                                   _CustomZone.bindCallbackGuarded.
2018-07-25T11:43:54.545441: stdout: [        ]   dart:async/schedule_microtask.dart 41:21                      _microtaskLoop
stdout: [        ]   dart:async/schedule_microtask.dart 50:5                       _startMicrotaskLoop
stdout: [        ]   dart:isolate/runtime/libtimer_impl.dart 391:30                _Timer._runTimers
stdout: [        ]   dart:isolate/runtime/libtimer_impl.dart 416:5                 _Timer._handleMessage
stdout: [        ]   dart:isolate/runtime/libisolate_patch.dart 165:12             _RawReceivePortImpl._handleMessage
stdout: [        ]   ===== asynchronous gap ===========================
2018-07-25T11:43:54.546005: stdout: [        ]   dart:async/zone.dart 1047:19                                  _CustomZone.registerCallback
stdout: [        ]   dart:async/zone.dart 964:22                                   _CustomZone.bindCallbackGuarded
stdout: [        ]   dart:async/schedule_microtask.dart 147:47                     scheduleMicrotask
stdout: [        ]   dart:async/runtime/libasync_patch.dart 42:7                   _AsyncAwaitCompleter.completeError
stdout: [        ]   test_driver/screenshot_test.dart                              main..
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1047:19                                  _CustomZone.registerCallback
stdout: [        ]   dart:async/zone.dart 964:22                                   _CustomZone.bindCallbackGuarded
2018-07-25T11:43:54.546131: stdout: [        ]   dart:async/timer.dart 52:45                                   new Timer
stdout: [        ]   dart:async/timer.dart 87:9                                    Timer.run
stdout: [        ]   dart:async/future.dart 172:11                                 new Future
2018-07-25T11:43:54.546292: stdout: [        ]   package:test/src/backend/invoker.dart 402:15                  Invoker._onRun...
2018-07-25T11:43:54.558615: stdout: [  +12 ms] 00:00 �[32m+0�[0m�[31m -2�[0m: �[31mSome tests failed.�[0m
2018-07-25T11:43:54.560950: stderr: [   +2 ms] Unhandled exception:
2018-07-25T11:43:54.561593: stderr: [        ] Dummy exception to set exit code.
stderr: [        ] #0      _rootHandleUncaughtError. (dart:async/zone.dart:1114:29)
stderr: [        ] #1      _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
stderr: [        ] #2      _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
stderr: [        ] #3      _Timer._runTimers (dart:isolate/runtime/libtimer_impl.dart:391:30)
stderr: [        ] #4      _Timer._handleMessage (dart:isolate/runtime/libtimer_impl.dart:416:5)
stderr: [        ] #5      _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:165:12)

Also flaked on #19565 with(log):

2018-07-20T16:12:55.934015: stdout: [        ] /Users/flutter/.cocoon/flutter/bin/cache/dart-sdk/bin/dart /Users/flutter/.cocoon/flutter/dev/integration_tests/ui/test_driver/screenshot_test.dart --packages=/Users/flutter/.cocoon/flutter/dev/integration_tests/ui/.packages -rexpanded --preview-dart-2
2018-07-20T16:12:59.353712: stdout: [+3419 ms] 00:00 �[32m+0�[0m: FlutterDriver (setUpAll)�[0m
2018-07-20T16:12:59.405960: stderr: [  +51 ms] [info ] FlutterDriver: Connecting to Flutter application at http://127.0.0.1:53932/
2018-07-20T16:13:00.062502: stdout: [ +657 ms] 00:00 �[32m+0�[0m�[31m -1�[0m: FlutterDriver (setUpAll) �[1m�[31m[E]�[0m�[0m
2018-07-20T16:13:00.063222: stdout: [        ]   Bad state: No element
2018-07-20T16:13:00.089837: stdout: [  +26 ms]   dart:core/runtime/libarray.dart 165:5                 List.first
2018-07-20T16:13:00.090789: stdout: [        ]   package:flutter_driver/src/driver/driver.dart 181:28  FlutterDriver.connect
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/future_impl.dart 22:43                     _Completer.completeError
stdout: [        ]   dart:async/runtime/libasync_patch.dart 40:18          _AsyncAwaitCompleter.completeError
stdout: [        ]   package:flutter_driver/src/driver/driver.dart         FlutterDriver.connect
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1055:19                          _CustomZone.registerUnaryCallback
stdout: [        ]   dart:async/runtime/libasync_patch.dart 77:23          _asyncThenWrapperHelper
stdout: [        ]   package:flutter_driver/src/driver/driver.dart         FlutterDriver.connect
stdout: [        ]   test_driver/screenshot_test.dart 14:36                main..
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1055:19                          _CustomZone.registerUnaryCallback
stdout: [        ]   dart:async/zone.dart 969:22                           _CustomZone.bindUnaryCallbackGuarded
stdout: [        ]   dart:async/future.dart 522:34                         Future.doWhile
2018-07-20T16:13:00.091398: stdout: [        ]   dart:async/future.dart 482:12                         Future.forEach
stdout: [        ]   package:test/src/backend/declarer.dart 272:36         Declarer._setUpAll..
2018-07-20T16:13:00.092343: stdout: [        ]   dart:async/zone.dart 1126:13                          _rootRun
stdout: [        ]   dart:async/zone.dart 1023:19                          _CustomZone.run
stdout: [        ]   dart:async/zone.dart 1518:10                          _runZoned
2018-07-20T16:13:00.092460: stdout: [        ]   dart:async/zone.dart 1465:12                          runZoned
2018-07-20T16:13:00.093053: stdout: [        ]   package:test/src/backend/declarer.dart 272:14         Declarer._setUpAll.
stdout: [        ]   package:test/src/backend/invoker.dart 403:25          Invoker._onRun....
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1047:19                          _CustomZone.registerCallback
stdout: [        ]   dart:async/zone.dart 964:22                           _CustomZone.bindCallbackGuarded
stdout: [        ]   dart:async/timer.dart 52:45                           new Timer
stdout: [        ]   dart:async/timer.dart 87:9                            Timer.run
stdout: [        ]   dart:async/future.dart 172:11                         new Future
stdout: [        ]   package:test/src/backend/invoker.dart 402:15          Invoker._onRun...
2018-07-20T16:13:00.095890: stdout: [   +4 ms] 00:00 �[32m+0�[0m�[31m -1�[0m: FlutterDriver (tearDownAll)�[0m
2018-07-20T16:13:00.111793: stdout: [  +15 ms] 00:00 �[32m+0�[0m�[31m -2�[0m: FlutterDriver (tearDownAll) �[1m�[31m[E]�[0m�[0m
2018-07-20T16:13:00.118202: stdout: [   +6 ms]   NoSuchMethodError: The method 'close' was called on null.
2018-07-20T16:13:00.118469: stdout: [        ]   Receiver: null
stdout: [        ]   Tried calling: close()
2018-07-20T16:13:00.125533: stdout: [   +7 ms]   dart:core/runtime/libobject_patch.dart 46:5                   Object.noSuchMethod
2018-07-20T16:13:00.125709: stdout: [        ]   test_driver/screenshot_test.dart 18:20                        main..
2018-07-20T16:13:00.127355: stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/future_impl.dart 22:43                             _Completer.completeError
stdout: [        ]   dart:async/runtime/libasync_patch.dart 43:20                  _AsyncAwaitCompleter.completeError.
stdout: [        ]   package:stack_trace/src/stack_zone_specification.dart 209:15  StackZoneSpecification._run
stdout: [        ]   package:stack_trace/src/stack_zone_specification.dart 119:48  StackZoneSpecification._registerCallback.
stdout: [        ]   dart:async/zone.dart 1122:38                                  _rootRun
stdout: [        ]   dart:async/zone.dart 1023:19                                  _CustomZone.run
stdout: [        ]   dart:async/zone.dart 925:7                                    _CustomZone.runGuarded
stdout: [        ]   dart:async/zone.dart 965:23                                   _CustomZone.bindCallbackGuarded.
stdout: [        ]   package:stack_trace/src/stack_zone_specification.dart 209:15  StackZoneSpecification._run
stdout: [        ]   package:stack_trace/src/stack_zone_specification.dart 119:48  StackZoneSpecification._registerCallback.
stdout: [        ]   dart:async/zone.dart 1126:13                                  _rootRun
stdout: [        ]   dart:async/zone.dart 1023:19                                  _CustomZone.run
stdout: [        ]   dart:async/zone.dart 925:7                                    _CustomZone.runGuarded
stdout: [        ]   dart:async/zone.dart 965:23                                   _CustomZone.bindCallbackGuarded.
stdout: [        ]   dart:async/schedule_microtask.dart 41:21                      _microtaskLoop
stdout: [        ]   dart:async/schedule_microtask.dart 50:5                       _startMicrotaskLoop
stdout: [        ]   dart:isolate/runtime/libtimer_impl.dart 391:30                _Timer._runTimers
stdout: [        ]   dart:isolate/runtime/libtimer_impl.dart 416:5                 _Timer._handleMessage
stdout: [        ]   dart:isolate/runtime/libisolate_patch.dart 165:12             _RawReceivePortImpl._handleMessage
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1047:19                                  _CustomZone.registerCallback
stdout: [        ]   dart:async/zone.dart 964:22                                   _CustomZone.bindCallbackGuarded
stdout: [        ]   dart:async/schedule_microtask.dart 147:47                     scheduleMicrotask
stdout: [        ]   dart:async/runtime/libasync_patch.dart 42:7                   _AsyncAwaitCompleter.completeError
stdout: [        ]   test_driver/screenshot_test.dart                              main..
stdout: [        ]   ===== asynchronous gap ===========================
stdout: [        ]   dart:async/zone.dart 1047:19                                  _CustomZone.registerCallback
2018-07-20T16:13:00.127736: stdout: [        ]   dart:async/zone.dart 964:22                                   _CustomZone.bindCallbackGuarded
stdout: [        ]   dart:async/timer.dart 52:45                                   new Timer
stdout: [        ]   dart:async/timer.dart 87:9                                    Timer.run
stdout: [        ]   dart:async/future.dart 172:11                                 new Future
stdout: [        ]   package:test/src/backend/invoker.dart 402:15                  Invoker._onRun...
2018-07-20T16:13:00.141180: stdout: [  +13 ms] 00:00 �[32m+0�[0m�[31m -2�[0m: �[31mSome tests failed.�[0m

Activity

  1. amirh
    added
    team: flakes
    on Jul 26, 2018
  2. zoechi
    added
    c: contributor-productivityTeam-specific productivity, code health, technical debt.
    on Dec 18, 2018
  3. Hixie
    added
    team-infraOwned by Infrastructure team
    on Sep 25, 2019

  4. godofredoc commented on Oct 31, 2019

    @godofredoc
    godofredoc
    on Oct 31, 2019
    Contributor

    Not happening anymore. Please reopen if it fails again.

  5. godofredoc
    closed this as completedon Oct 31, 2019
  6. engine-flutter-autoroll
    added 12 commits that reference this issue on Oct 10, 2020

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    a06e0d9

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    c321645

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    54c83f4

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    1aa94a6

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    e1e026a

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    72eaeeb

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    6feb838

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    528426c

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    e61645c

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    82b23bf

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    47839a6

    a2046ae Revert "fix On iOS, dialog titles are announced twice (flutte…

    615a3db
  7. zanderso
    added a commit that references this issue on Oct 13, 2020

    Roll Engine from 11d756a to c2938d0 (27 revisions) (#67983)

    081c47b

  8. github-actions commented on Aug 26, 2021

    @github-actions
    github-actionsbot
    on Aug 26, 2021

    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

  9. github-actions
    locked as resolved and limited conversation to collaborators on Aug 26, 2021
  10. flutter-triage-bot
    added
    c: flakeTests that sometimes, but not always, incorrectly pass
    on Jul 7, 2023
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