<p dir="auto">From <a href="https://ci.appveyor.com/project/flutter/flutter/build/1.0.10832" rel="nofollow">https://ci.appveyor.com/project/flutter/flutter/build/1.0.10832</a>:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="15:03 +2123 ~20: loading C:\projects\flutter sdk\packages\flutter\test\widgets\semantics_5_test.dart
unhandled error during finalization of test:
C:\projects\flutter sdk\packages\flutter\test\widgets\semantics_4_test.dart
FileSystemException: Deletion failed, path = 'C:\Users\appveyor\AppData\Local\Temp\1\dart_test_listener4106bb48-2bb3-11e8-81e6-00155d07f5b1' (OS Error: The process cannot access the file because it is being used by another process.
, errno = 32)
15:03 +2123 ~20 -1: loading C:\projects\flutter sdk\packages\flutter\test\widgets\semantics_4_test.dart [E]
  FileSystemException: Deletion failed, path = 'C:\Users\appveyor\AppData\Local\Temp\1\dart_test_listener4106bb48-2bb3-11e8-81e6-00155d07f5b1' (OS Error: The process cannot access the file because it is being used by another process.
  , errno = 32)
  package:flutter_tools/src/test/flutter_platform.dart 529   _FlutterPlatform._startTest
  ===== asynchronous gap ===========================
  dart:async/future_impl.dart 22                             _Completer.completeError
  package:flutter_tools/src/test/flutter_platform.dart       _FlutterPlatform._startTest
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1055                                  _CustomZone.registerUnaryCallback
  dart:async-patch/dart:async/async_patch.dart 77            _asyncThenWrapperHelper
  package:flutter_tools/src/test/flutter_platform.dart 264   _FlutterPlatform._startTest
  package:flutter_tools/src/test/flutter_platform.dart 257   _FlutterPlatform.loadChannel
  package:test/src/runner/plugin/platform.dart 63            PlatformPlugin.load
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1047                                  _CustomZone.registerCallback
  dart:async/zone.dart 964                                   _CustomZone.bindCallbackGuarded
  dart:async/schedule_microtask.dart 147                     scheduleMicrotask
  dart:async/future.dart 198                                 new Future.microtask
  package:test/src/runner/plugin/platform.dart 60            PlatformPlugin.load
  package:test/src/runner/loader.dart 252                    Loader.loadFile.&lt;fn&gt;
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1055                                  _CustomZone.registerUnaryCallback
  dart:async-patch/dart:async/async_patch.dart 77            _asyncThenWrapperHelper
  package:test/src/runner/loader.dart 246                    Loader.loadFile.&lt;fn&gt;
  package:test/src/runner/load_suite.dart 89                 new LoadSuite.&lt;fn&gt;.&lt;fn&gt;
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1047                                  _CustomZone.registerCallback
  dart:async/zone.dart 964                                   _CustomZone.bindCallbackGuarded
  dart:async/schedule_microtask.dart 147                     scheduleMicrotask
  dart:async/future.dart 198                                 new Future.microtask
  package:test/src/runner/load_suite.dart 88                 new LoadSuite.&lt;fn&gt;.&lt;fn&gt;
  package:test/src/utils.dart 297                            invoke
  package:test/src/runner/load_suite.dart 88                 new LoadSuite.&lt;fn&gt;
  package:test/src/backend/invoker.dart 403                  Invoker._onRun.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1047                                  _CustomZone.registerCallback
  dart:async/zone.dart 964                                   _CustomZone.bindCallbackGuarded
  dart:async/schedule_microtask.dart 147                     scheduleMicrotask
  dart:async/future.dart 198                                 new Future.microtask
  package:test/src/backend/invoker.dart 402                  Invoker._onRun.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;
  dart:async/future.dart 174                                 new Future.&lt;fn&gt;
  package:stack_trace/src/stack_zone_specification.dart 209  StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 119  StackZoneSpecification._registerCallback.&lt;fn&gt;
  dart:async/zone.dart 1122                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 925                                   _CustomZone.runGuarded
  dart:async/zone.dart 965                                   _CustomZone.bindCallbackGuarded.&lt;fn&gt;
  package:stack_trace/src/stack_zone_specification.dart 209  StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 119  StackZoneSpecification._registerCallback.&lt;fn&gt;
  dart:async/zone.dart 1126                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 949                                   _CustomZone.bindCallback.&lt;fn&gt;
  dart:async-patch/dart:async/timer_patch.dart 21            Timer._createTimer.&lt;fn&gt;
  dart:isolate-patch/dart:isolate/timer_impl.dart 382        _Timer._runTimers
  dart:isolate-patch/dart:isolate/timer_impl.dart 416        _Timer._handleMessage
  dart:isolate-patch/dart:isolate/isolate_patch.dart 165     _RawReceivePortImpl._handleMessage
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1047                                  _CustomZone.registerCallback
  dart:async/zone.dart 964                                   _CustomZone.bindCallbackGuarded
  dart:async/timer.dart 52                                   new Timer
  dart:async/timer.dart 87                                   Timer.run
  dart:async/future.dart 172                                 new Future
  package:test/src/backend/invoker.dart 402                  Invoker._onRun.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1047                                  _CustomZone.registerCallback
  dart:async/zone.dart 964                                   _CustomZone.bindCallbackGuarded
  dart:async/schedule_microtask.dart 147                     scheduleMicrotask
  dart:async/future.dart 198                                 new Future.microtask
  package:test/src/backend/invoker.dart 389                  Invoker._onRun.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;
  dart:async/zone.dart 1126                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 1501                                  runZoned
  package:test/src/backend/invoker.dart 389                  Invoker._onRun.&lt;fn&gt;.&lt;fn&gt;
  dart:async/zone.dart 1126                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 1501                                  runZoned
  package:test/src/backend/invoker.dart 144                  Invoker.guard
  package:test/src/backend/invoker.dart 441                  Invoker._guardIfGuarded
  package:test/src/backend/invoker.dart 388                  Invoker._onRun.&lt;fn&gt;
  package:stack_trace/src/chain.dart 101                     Chain.capture.&lt;fn&gt;
  dart:async/zone.dart 1126                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 1501                                  runZoned
  package:stack_trace/src/chain.dart 99                      Chain.capture
  package:test/src/backend/invoker.dart 387                  Invoker._onRun
  package:test/src/backend/live_test_controller.dart 188     LiveTestController._run
  package:test/src/backend/live_test_controller.dart 40      _LiveTest.run
  dart:async/future.dart 200                                 new Future.microtask.&lt;fn&gt;
  dart:async/zone.dart 1126                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 949                                   _CustomZone.bindCallback.&lt;fn&gt;
  dart:async/schedule_microtask.dart 41                      _microtaskLoop
  dart:async/schedule_microtask.dart 50                      _startMicrotaskLoop
  dart:isolate-patch/dart:isolate/isolate_patch.dart 113     _runPendingImmediateCallback
  dart:isolate-patch/dart:isolate/isolate_patch.dart 166     _RawReceivePortImpl._handleMessage
  
15:05 +2123 ~20 -1: C:\projects\flutter sdk\packages\flutter\test\widgets\semantics_5_test.dart: - Semantics 5"><pre class="notranslate"><code class="notranslate">15:03 +2123 ~20: loading C:\projects\flutter sdk\packages\flutter\test\widgets\semantics_5_test.dart
unhandled error during finalization of test:
C:\projects\flutter sdk\packages\flutter\test\widgets\semantics_4_test.dart
FileSystemException: Deletion failed, path = 'C:\Users\appveyor\AppData\Local\Temp\1\dart_test_listener4106bb48-2bb3-11e8-81e6-00155d07f5b1' (OS Error: The process cannot access the file because it is being used by another process.
, errno = 32)
15:03 +2123 ~20 -1: loading C:\projects\flutter sdk\packages\flutter\test\widgets\semantics_4_test.dart [E]
  FileSystemException: Deletion failed, path = 'C:\Users\appveyor\AppData\Local\Temp\1\dart_test_listener4106bb48-2bb3-11e8-81e6-00155d07f5b1' (OS Error: The process cannot access the file because it is being used by another process.
  , errno = 32)
  package:flutter_tools/src/test/flutter_platform.dart 529   _FlutterPlatform._startTest
  ===== asynchronous gap ===========================
  dart:async/future_impl.dart 22                             _Completer.completeError
  package:flutter_tools/src/test/flutter_platform.dart       _FlutterPlatform._startTest
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1055                                  _CustomZone.registerUnaryCallback
  dart:async-patch/dart:async/async_patch.dart 77            _asyncThenWrapperHelper
  package:flutter_tools/src/test/flutter_platform.dart 264   _FlutterPlatform._startTest
  package:flutter_tools/src/test/flutter_platform.dart 257   _FlutterPlatform.loadChannel
  package:test/src/runner/plugin/platform.dart 63            PlatformPlugin.load
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1047                                  _CustomZone.registerCallback
  dart:async/zone.dart 964                                   _CustomZone.bindCallbackGuarded
  dart:async/schedule_microtask.dart 147                     scheduleMicrotask
  dart:async/future.dart 198                                 new Future.microtask
  package:test/src/runner/plugin/platform.dart 60            PlatformPlugin.load
  package:test/src/runner/loader.dart 252                    Loader.loadFile.&lt;fn&gt;
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1055                                  _CustomZone.registerUnaryCallback
  dart:async-patch/dart:async/async_patch.dart 77            _asyncThenWrapperHelper
  package:test/src/runner/loader.dart 246                    Loader.loadFile.&lt;fn&gt;
  package:test/src/runner/load_suite.dart 89                 new LoadSuite.&lt;fn&gt;.&lt;fn&gt;
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1047                                  _CustomZone.registerCallback
  dart:async/zone.dart 964                                   _CustomZone.bindCallbackGuarded
  dart:async/schedule_microtask.dart 147                     scheduleMicrotask
  dart:async/future.dart 198                                 new Future.microtask
  package:test/src/runner/load_suite.dart 88                 new LoadSuite.&lt;fn&gt;.&lt;fn&gt;
  package:test/src/utils.dart 297                            invoke
  package:test/src/runner/load_suite.dart 88                 new LoadSuite.&lt;fn&gt;
  package:test/src/backend/invoker.dart 403                  Invoker._onRun.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1047                                  _CustomZone.registerCallback
  dart:async/zone.dart 964                                   _CustomZone.bindCallbackGuarded
  dart:async/schedule_microtask.dart 147                     scheduleMicrotask
  dart:async/future.dart 198                                 new Future.microtask
  package:test/src/backend/invoker.dart 402                  Invoker._onRun.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;
  dart:async/future.dart 174                                 new Future.&lt;fn&gt;
  package:stack_trace/src/stack_zone_specification.dart 209  StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 119  StackZoneSpecification._registerCallback.&lt;fn&gt;
  dart:async/zone.dart 1122                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 925                                   _CustomZone.runGuarded
  dart:async/zone.dart 965                                   _CustomZone.bindCallbackGuarded.&lt;fn&gt;
  package:stack_trace/src/stack_zone_specification.dart 209  StackZoneSpecification._run
  package:stack_trace/src/stack_zone_specification.dart 119  StackZoneSpecification._registerCallback.&lt;fn&gt;
  dart:async/zone.dart 1126                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 949                                   _CustomZone.bindCallback.&lt;fn&gt;
  dart:async-patch/dart:async/timer_patch.dart 21            Timer._createTimer.&lt;fn&gt;
  dart:isolate-patch/dart:isolate/timer_impl.dart 382        _Timer._runTimers
  dart:isolate-patch/dart:isolate/timer_impl.dart 416        _Timer._handleMessage
  dart:isolate-patch/dart:isolate/isolate_patch.dart 165     _RawReceivePortImpl._handleMessage
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1047                                  _CustomZone.registerCallback
  dart:async/zone.dart 964                                   _CustomZone.bindCallbackGuarded
  dart:async/timer.dart 52                                   new Timer
  dart:async/timer.dart 87                                   Timer.run
  dart:async/future.dart 172                                 new Future
  package:test/src/backend/invoker.dart 402                  Invoker._onRun.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;
  ===== asynchronous gap ===========================
  dart:async/zone.dart 1047                                  _CustomZone.registerCallback
  dart:async/zone.dart 964                                   _CustomZone.bindCallbackGuarded
  dart:async/schedule_microtask.dart 147                     scheduleMicrotask
  dart:async/future.dart 198                                 new Future.microtask
  package:test/src/backend/invoker.dart 389                  Invoker._onRun.&lt;fn&gt;.&lt;fn&gt;.&lt;fn&gt;
  dart:async/zone.dart 1126                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 1501                                  runZoned
  package:test/src/backend/invoker.dart 389                  Invoker._onRun.&lt;fn&gt;.&lt;fn&gt;
  dart:async/zone.dart 1126                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 1501                                  runZoned
  package:test/src/backend/invoker.dart 144                  Invoker.guard
  package:test/src/backend/invoker.dart 441                  Invoker._guardIfGuarded
  package:test/src/backend/invoker.dart 388                  Invoker._onRun.&lt;fn&gt;
  package:stack_trace/src/chain.dart 101                     Chain.capture.&lt;fn&gt;
  dart:async/zone.dart 1126                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 1501                                  runZoned
  package:stack_trace/src/chain.dart 99                      Chain.capture
  package:test/src/backend/invoker.dart 387                  Invoker._onRun
  package:test/src/backend/live_test_controller.dart 188     LiveTestController._run
  package:test/src/backend/live_test_controller.dart 40      _LiveTest.run
  dart:async/future.dart 200                                 new Future.microtask.&lt;fn&gt;
  dart:async/zone.dart 1126                                  _rootRun
  dart:async/zone.dart 1023                                  _CustomZone.run
  dart:async/zone.dart 949                                   _CustomZone.bindCallback.&lt;fn&gt;
  dart:async/schedule_microtask.dart 41                      _microtaskLoop
  dart:async/schedule_microtask.dart 50                      _startMicrotaskLoop
  dart:isolate-patch/dart:isolate/isolate_patch.dart 113     _runPendingImmediateCallback
  dart:isolate-patch/dart:isolate/isolate_patch.dart 166     _RawReceivePortImpl._handleMessage
  
15:05 +2123 ~20 -1: C:\projects\flutter sdk\packages\flutter\test\widgets\semantics_5_test.dart: - Semantics 5
</code></pre></div>
<p dir="auto">cupertino_picker_demo.dart results in bulid Error.</p>
<p dir="auto"><a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/flutter/flutter/commit/2a8e35cc9c42e6957b069439eaa56207afed5ea2/hovercard" href="https://github.com/flutter/flutter/commit/2a8e35cc9c42e6957b069439eaa56207afed5ea2"><tt>2a8e35c</tt></a></p>
<p dir="auto">The latest fix checked in breaks the build with following error.</p>
<p dir="auto"><strong>Compiler message:</strong></p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:168:23: Error: Getter not found: 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.date,
                      ^^^^^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:167:15: Error: Method not found: 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:167:15: Error: The method 'CupertinoDatePicker' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing method, or defining a method named 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:168:23: Error: The getter 'CupertinoDatePickerMode' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.date,
                      ^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:198:23: Error: Getter not found: 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.time,
                      ^^^^^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:197:15: Error: Method not found: 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:197:15: Error: The method 'CupertinoDatePicker' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing method, or defining a method named 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:198:23: Error: The getter 'CupertinoDatePickerMode' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.time,
                      ^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:228:23: Error: Getter not found: 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.dateAndTime,
                      ^^^^^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:227:15: Error: Method not found: 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:227:15: Error: The method 'CupertinoDatePicker' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing method, or defining a method named 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:228:23: Error: The getter 'CupertinoDatePickerMode' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.dateAndTime,
                      ^
Compiler failed on d:\Repos\flutter\examples\flutter_gallery\lib/main.dart
Gradle task 'assembleDebug'... Done                         10.1s
Gradle task assembleDebug failed with exit code 1"><pre class="notranslate"><code class="notranslate">file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:168:23: Error: Getter not found: 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.date,
                      ^^^^^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:167:15: Error: Method not found: 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:167:15: Error: The method 'CupertinoDatePicker' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing method, or defining a method named 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:168:23: Error: The getter 'CupertinoDatePickerMode' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.date,
                      ^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:198:23: Error: Getter not found: 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.time,
                      ^^^^^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:197:15: Error: Method not found: 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:197:15: Error: The method 'CupertinoDatePicker' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing method, or defining a method named 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:198:23: Error: The getter 'CupertinoDatePickerMode' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.time,
                      ^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:228:23: Error: Getter not found: 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.dateAndTime,
                      ^^^^^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:227:15: Error: Method not found: 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^^^^^^^^^^^^^^^^^^^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:227:15: Error: The method 'CupertinoDatePicker' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing method, or defining a method named 'CupertinoDatePicker'.
              CupertinoDatePicker(
              ^
file:///d:/Repos/flutter/examples/flutter_gallery/lib/demo/cupertino/cupertino_picker_demo.dart:228:23: Error: The getter 'CupertinoDatePickerMode' isn't defined for the class '#lib1::_CupertinoPickerDemoState'.
Try correcting the name to the name of an existing getter, or defining a getter or field named 'CupertinoDatePickerMode'.
                mode: CupertinoDatePickerMode.dateAndTime,
                      ^
Compiler failed on d:\Repos\flutter\examples\flutter_gallery\lib/main.dart
Gradle task 'assembleDebug'... Done                         10.1s
Gradle task assembleDebug failed with exit code 1
</code></pre></div>