10:19:55 AM: Setting "enable-web" value to "true".
10:19:55 AM: You may need to restart any open editors for them to read new settings.
10:19:57 AM: Downloading Material fonts...                                      774ms
10:19:57 AM: Downloading Gradle Wrapper...                                       30ms
10:19:57 AM: Downloading package sky_engine...                                  282ms
10:19:57 AM: Downloading flutter_patched_sdk tools...                           473ms
10:19:58 AM: Downloading flutter_patched_sdk_product tools...                   357ms
10:19:59 AM: Downloading linux-x64 tools...                                   1,006ms
10:20:00 AM: Downloading linux-x64/font-subset tools...                         109ms
10:20:01 AM: Downloading Web SDK...                                             953ms
10:20:02 AM: Downloading CanvasKit...                                           393ms
10:20:04 AM: Running "flutter pub get" in repo...                             1,624ms
10:20:04 AM: This app is using a deprecated version of the Android embedding.
10:20:04 AM: To avoid unexpected runtime failures, or future build failures, try to migrate this app to the V2 embedding.
10:20:04 AM: Take a look at the docs for migrating an app: https://github.com/flutter/flutter/wiki/Upgrading-pre-1.12-Android-projects
10:20:04 AM: 💪 Building with sound null safety 💪
10:20:04 AM: Upgrading .gitignore
10:20:06 AM: Compiling lib/main.dart for the Web...
10:20:06 AM: Target dart2js failed: Exception: Warning: The 'dart2js' entrypoint script is deprecated, please use 'dart compile js' instead.
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/ui/geometry.dart:37:16:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   const Offset(super.dx, super.dy);
10:20:06 AM:                ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/ui/geometry.dart:37:26:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   const Offset(super.dx, super.dy);
10:20:06 AM:                          ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/ui/geometry.dart:91:14:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   const Size(super.width, super.height);
10:20:06 AM:              ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/ui/geometry.dart:91:27:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   const Size(super.width, super.height);
10:20:06 AM:                           ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/ui/semantics.dart:300:14:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     required super.range,
10:20:06 AM:              ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/ui/semantics.dart:316:14:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     required super.range,
10:20:06 AM:              ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/canvaskit/canvas.dart:323:21:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   RecordingCkCanvas(super.skCanvas, ui.Rect bounds)
10:20:06 AM:                     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/canvaskit/path.dart:21:28:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   CkPath.fromSkPath(SkPath super.skPath, this._fillType) {
10:20:06 AM:                            ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/canvaskit/picture.dart:14:23:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   CkPicture(SkPicture super.picture, this.cullRect, this._snapshot) :
10:20:06 AM:                       ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/backdrop_filter.dart:11:52:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   PersistedBackdropFilter(PersistedBackdropFilter? super.oldLayer, this.filter);
10:20:06 AM:                                                    ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/clip.dart:71:40:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   PersistedClipRect(PersistedClipRect? super.oldLayer, this.rect, this.clipBehavior);
10:20:06 AM:                                        ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/clip.dart:186:50:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   PersistedPhysicalShape(PersistedPhysicalShape? super.oldLayer, this.path,
10:20:06 AM:                                                  ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/clip.dart:447:26:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:       PersistedClipPath? super.oldLayer, this.clipPath, this.clipBehavior);
10:20:06 AM:                          ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/color_filter.dart:11:46:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   PersistedColorFilter(PersistedColorFilter? super.oldLayer, this.filter);
10:20:06 AM:                                              ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/image_filter.dart:11:46:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   PersistedImageFilter(PersistedImageFilter? super.oldLayer, this.filter);
10:20:06 AM:                                              ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/offset.dart:11:36:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   PersistedOffset(PersistedOffset? super.oldLayer, this.dx, this.dy);
10:20:06 AM:                                    ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/opacity.dart:11:38:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   PersistedOpacity(PersistedOpacity? super.oldLayer, this.alpha, this.offset);
10:20:06 AM:                                      ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/path/path_metrics.dart:601:25:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   const _SurfaceTangent(super.position, super.vector, this.t);
10:20:06 AM:                         ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/path/path_metrics.dart:601:41:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   const _SurfaceTangent(super.position, super.vector, this.t);
10:20:06 AM:                                         ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/scene.dart:38:34:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   PersistedScene(PersistedScene? super.oldLayer) {
10:20:06 AM:                                  ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/shader_mask.dart:22:26:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     PersistedShaderMask? super.oldLayer,
10:20:06 AM:                          ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/html/transform.dart:12:42:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   PersistedTransform(PersistedTransform? super.oldLayer, this._matrixStorage);
10:20:06 AM:                                          ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:556:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.callback,
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:557:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.glassPaneElement,
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:558:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.pointerDataConverter
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:753:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.callback,
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:754:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.glassPaneElement,
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:755:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.pointerDataConverter
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:896:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.callback,
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:897:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.glassPaneElement,
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/pointer_binding.dart:898:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.pointerDataConverter
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/semantics/text_field.dart:21:32:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   SemanticsTextEditingStrategy(super.owner);
10:20:06 AM:                                ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/services/buffers.dart:328:14:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   _IntBuffer(super.buffer);
10:20:06 AM:              ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/text/canvas_paragraph.dart:310:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.width,
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/text/canvas_paragraph.dart:311:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.height,
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/text/canvas_paragraph.dart:312:5:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     super.alignment, {
10:20:06 AM:     ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/text/canvas_paragraph.dart:313:14:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     required super.baselineOffset,
10:20:06 AM:              ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/text/canvas_paragraph.dart:314:14:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:     required super.baseline,
10:20:06 AM:              ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/text_editing/text_editing.dart:963:41:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   GloballyPositionedTextEditingStrategy(super.owner);
10:20:06 AM:                                         ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/text_editing/text_editing.dart:1002:36:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   SafariDesktopTextEditingStrategy(super.owner);
10:20:06 AM:                                    ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/text_editing/text_editing.dart:1407:26:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   IOSTextEditingStrategy(super.owner);
10:20:06 AM:                          ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/text_editing/text_editing.dart:1604:30:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   AndroidTextEditingStrategy(super.owner);
10:20:06 AM:                              ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/text_editing/text_editing.dart:1675:30:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:   FirefoxTextEditingStrategy(super.owner);
10:20:06 AM:                              ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/window.dart:351:7:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:       super.windowId, super.platformDispatcher);
10:20:06 AM:       ^^^^^
10:20:06 AM: flutter/bin/cache/flutter_web_sdk/lib/_engine/engine/window.dart:351:23:
10:20:06 AM: Error: The 'super-parameters' language feature is disabled for this library.
10:20:06 AM:       super.windowId, super.platformDispatcher);
10:20:06 AM:                       ^^^^^
10:20:06 AM: .dart_tool/flutter_build/c82948ed5ee71e1b5750ea9f08214b62/main.dart:
10:20:06 AM: Internal Error: The compiler crashed when compiling this element.
10:20:06 AM: The compiler is broken.
10:20:06 AM: When compiling the above element, the compiler crashed. It is not
10:20:06 AM: possible to tell if this is caused by a problem in your program or
10:20:06 AM: not. Regardless, the compiler should not crash.
10:20:06 AM: The Dart team would greatly appreciate if you would take a moment to
10:20:06 AM: report this problem at http://dartbug.com/new.
10:20:06 AM: Please include the following information:
10:20:06 AM: * the name and version of your operating system,
10:20:06 AM: * the Dart SDK build number (2.19.0-81.0.dev), and
10:20:06 AM: * the entire message you see here (including the full stack trace
10:20:06 AM:   below as well as the source location above).
10:20:06 AM: The compiler crashed: Crash when compiling null,
10:20:06 AM: at character offset null:
10:20:06 AM: Null check operator used on a null value
10:20:06 AM: #0      InferableTypeBuilderMixin.type (package:front_end/src/fasta/builder/type_builder.dart:392:29)
10:20:06 AM: #1      InferableTypeBuilder.inferType (package:front_end/src/fasta/builder/omitted_type_builder.dart:155:12)
10:20:06 AM: #2      SourceLoader.performTopLevelInference (package:front_end/src/fasta/source/source_loader.dart:2358:19)
10:20:06 AM: #3      KernelTarget.buildOutlines.<anonymous closure> (package:front_end/src/fasta/kernel/kernel_target.dart:532:14)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #4      withCrashReporting (package:front_end/src/fasta/crash.dart:122:12)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #5      _buildInternal (package:front_end/src/kernel_generator_impl.dart:139:7)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #6      withCrashReporting (package:front_end/src/fasta/crash.dart:122:12)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #7      compile.<anonymous closure> (package:front_end/src/api_unstable/dart2js.dart:195:37)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #8      compile (package:front_end/src/api_unstable/dart2js.dart:193:36)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #9      _loadFromSource (package:compiler/src/phase/load_kernel.dart:292:29)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #10     run (package:compiler/src/phase/load_kernel.dart:393:36)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #11     Compiler.loadKernel (package:compiler/src/compiler.dart:392:9)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #12     Compiler.produceKernel (package:compiler/src/compiler.dart:399:35)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #13     Compiler.runSequentialPhases (package:compiler/src/compiler.dart:663:33)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #14     Compiler.runInternal.<anonymous closure> (package:compiler/src/compiler.dart:315:7)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #15     Compiler.runInternal (package:compiler/src/compiler.dart:314:5)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #16     Compiler.run.<anonymous closure> (package:compiler/src/compiler.dart:235:11)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #17     main (package:compiler/src/dart2js.dart:1423:3)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #0      InferableTypeBuilderMixin.type (package:front_end/src/fasta/builder/type_builder.dart:392:29)
10:20:06 AM: #1      InferableTypeBuilder.inferType (package:front_end/src/fasta/builder/omitted_type_builder.dart:155:12)
10:20:06 AM: #2      SourceLoader.performTopLevelInference (package:front_end/src/fasta/source/source_loader.dart:2358:19)
10:20:06 AM: #3      KernelTarget.buildOutlines.<anonymous closure> (package:front_end/src/fasta/kernel/kernel_target.dart:532:14)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #4      withCrashReporting (package:front_end/src/fasta/crash.dart:122:12)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #5      _buildInternal (package:front_end/src/kernel_generator_impl.dart:139:7)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #6      withCrashReporting (package:front_end/src/fasta/crash.dart:122:12)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #7      compile.<anonymous closure> (package:front_end/src/api_unstable/dart2js.dart:195:37)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #8      compile (package:front_end/src/api_unstable/dart2js.dart:193:36)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #9      _loadFromSource (package:compiler/src/phase/load_kernel.dart:292:29)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #10     run (package:compiler/src/phase/load_kernel.dart:393:36)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #11     Compiler.loadKernel (package:compiler/src/compiler.dart:392:9)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #12     Compiler.produceKernel (package:compiler/src/compiler.dart:399:35)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #13     Compiler.runSequentialPhases (package:compiler/src/compiler.dart:663:33)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #14     Compiler.runInternal.<anonymous closure> (package:compiler/src/compiler.dart:315:7)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #15     Compiler.runInternal (package:compiler/src/compiler.dart:314:5)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #16     Compiler.run.<anonymous closure> (package:compiler/src/compiler.dart:235:11)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: #17     main (package:compiler/src/dart2js.dart:1423:3)
10:20:06 AM: <asynchronous suspension>
10:20:06 AM: Compiling lib/main.dart for the Web...                           1,847ms
10:20:06 AM: Exception: Failed to compile application for the Web.
10:20:06 AM: