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An assert in a flutter app can hang the engine #7431

@apwilson

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@apwilson
16:23:15.442: I/flutter (25825): Another exception was thrown: The intrinsic dimension methods of the RenderFlex class returned values that violate the intrinsic protocol contract.
16:23:15.445: I/flutter (25825): Another exception was thrown: The intrinsic dimension methods of the RenderClipRRect class returned values that violate the intrinsic protocol contract.
16:23:15.447: I/flutter (25825): Another exception was thrown: The intrinsic dimension methods of the RenderFlex class returned values that violate the intrinsic protocol contract.
16:23:15.450: I/flutter (25825): Another exception was thrown: The intrinsic dimension methods of the RenderClipRRect class returned values that violate the intrinsic protocol contract.
16:23:15.452: I/flutter (25825): box RenderMetaData relayoutBoundary=up2 NEEDS-LAYOUT
16:23:15.461: I/flutter (25825): box RenderMetaData relayoutBoundary=up2
16:23:15.546: I/flutter (25825): Another exception was thrown: 'package:flutter/src/widgets/scroll_behavior.dart': Failed assertion: line 166: 'minScrollOffset <= maxScrollOffset' is not true.
16:23:15.548: I/flutter (25825): box RenderMetaData relayoutBoundary=up2 NEEDS-LAYOUT
RRequest to Dart VM Service timed out: _flutter.runInView({viewId: _flutterView/0xe0ff03b0, mainScript: /data/user/0/com.google.fuchsia.armadillo/cache/armadillonxiodu/lib/main.dart, packagesFile: /data/user/0/com.google.fuchsia.armadillo/cache/armadillonxiodu/.packages, assetDirectory: /data/user/0/com.google.fuchsia.armadillo/cache/armadillonxiodu/build/flx})
16:23:38.266: Performing full restart...                              /
Exception from flutter run: TimeoutException after 0:00:10.000000: Future not completed
dart:async                                          _Completer.completeError
package:flutter_tools/src/vmservice.dart 589        VM.invokeRpcRaw.<async>
===== asynchronous gap ===========================
dart:async                                          _asyncErrorWrapperHelper
package:flutter_tools/src/vmservice.dart            VM.invokeRpcRaw
package:flutter_tools/src/vmservice.dart 591        VM.invokeRpc.<async>
===== asynchronous gap ===========================
dart:async                                          Future.Future.microtask
package:flutter_tools/src/vmservice.dart            VM.invokeRpc
package:flutter_tools/src/vmservice.dart 659        VM.runInView
package:flutter_tools/src/vmservice.dart 943        FlutterView.runFromSource.<async>
===== asynchronous gap ===========================
dart:async                                          Future.Future.microtask
package:flutter_tools/src/vmservice.dart            FlutterView.runFromSource
package:flutter_tools/src/hot.dart 327              HotRunner._launchInView.<async>
===== asynchronous gap ===========================
dart:async                                          Future.Future.microtask
package:flutter_tools/src/hot.dart                  HotRunner._launchInView
package:flutter_tools/src/hot.dart 339              HotRunner._launchFromDevFS.<async>
===== asynchronous gap ===========================
dart:async                                          Future.Future.microtask
package:flutter_tools/src/hot.dart                  HotRunner._launchFromDevFS
package:flutter_tools/src/hot.dart 350              HotRunner._restartFromSources.<async>
dart:async                                          _SyncCompleter.complete
package:flutter_tools/src/hot.dart 298              HotRunner._updateDevFS.<async>
dart:async                                          _SyncCompleter.complete
package:flutter_tools/src/devfs.dart 457            DevFS.update.<async>
dart:async                                          _SyncCompleter.complete
package:flutter_tools/src/devfs.dart 196            ServiceProtocolDevFSOperations.writeSource.<async>
dart:async                                          _SyncCompleter.complete
package:flutter_tools/src/vmservice.dart 581        VM.invokeRpcRaw.<async>
dart:async                                          _SyncCompleter.complete
package:json_rpc_2/src/client.dart 174              Client._handleSingleResponse
package:json_rpc_2/src/client.dart 164              Client._handleResponse
dart:async                                          _StreamController.add
package:json_rpc_2/src/peer.dart 91                 Peer.listen.<fn>
===== asynchronous gap ===========================
dart:async                                          _asyncThenWrapperHelper
package:flutter_tools/src/hot.dart                  HotRunner._restartFromSources
package:flutter_tools/src/hot.dart 388              HotRunner.restart.<async>
===== asynchronous gap ===========================
dart:async                                          Future.Future.microtask
package:flutter_tools/src/hot.dart                  HotRunner.restart
package:flutter_tools/src/hot.dart 255              HotRunner.handleTerminalCommand.<async>
===== asynchronous gap ===========================
dart:async                                          Future.Future.microtask
package:flutter_tools/src/hot.dart                  HotRunner.handleTerminalCommand
package:flutter_tools/src/resident_runner.dart 198  ResidentRunner.processTerminalInput.<async>
dart:async                                          _SyncCompleter.complete
package:flutter_tools/src/resident_runner.dart 184  ResidentRunner._commonTerminalInputHandler.<async>
===== asynchronous gap ===========================
dart:async                                          _asyncThenWrapperHelper
package:flutter_tools/src/resident_runner.dart      ResidentRunner.processTerminalInput
package:flutter_tools/src/resident_runner.dart 225  ResidentRunner.setupTerminal.<fn>
===== asynchronous gap ===========================
dart:async                                          _BoundSinkStream.listen
package:flutter_tools/src/resident_runner.dart 224  ResidentRunner.setupTerminal
package:flutter_tools/src/hot.dart 223              HotRunner._run.<async>
dart:async                                          _SyncCompleter.complete
package:flutter_tools/src/vmservice.dart 687        VM.refreshViews.<async>
dart:async                                          _SyncCompleter.complete
package:flutter_tools/src/vmservice.dart 597        VM.invokeRpc.<async>
dart:async                                          _SyncCompleter.complete
package:flutter_tools/src/vmservice.dart 581        VM.invokeRpcRaw.<async>
dart:async                                          _SyncCompleter.complete
package:json_rpc_2/src/client.dart 174              Client._handleSingleResponse
package:json_rpc_2/src/client.dart 164              Client._handleResponse
dart:async                                          _StreamController.add
package:json_rpc_2/src/peer.dart 91                 Peer.listen.<fn>
===== asynchronous gap ===========================
dart:async                                          _asyncThenWrapperHelper
package:flutter_tools/src/hot.dart                  HotRunner._run
package:flutter_tools/src/hot.dart 88               HotRunner.run.<fn>
package:stack_trace                                 Chain.capture
package:flutter_tools/src/hot.dart 87               HotRunner.run
package:flutter_tools/src/commands/run.dart 246     RunCommand.runCommand.<async>

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