Isolates in --debug mode do not work #5926
Description
When trying to create an Isolate in --debug mode the Dart VM is unable to fetch the Dart source code for the new Isolate.
The error is thrown when tapping the Start button in the services/isolate.dart example.
This issue was previously reported as #5814 and was partially fixed to work in --release mode but is still failing in the default --debug mode (for different reasons since the earlier fix).
flutter/examples/layers$ flutter run -t services/isolate.dart
Building APK in debug mode (android-arm)...
Warning: signing the APK using the debug keystore.
Built build/app.apk (8.7MB).
Launching loader on Nexus 5X...
--------- beginning of main
Observatory listening on http://127.0.0.1:34521
Diagnostic server listening on http://127.0.0.1:41805
Updating assets... 0.2s
Syncing files to device...
Scanning project files... 0.1s
Scanning package files... 0.5s
Scanning asset files... 0.0s
Scanning for deleted files... 0.0s
No files to remove.
Updating files... 3.2s
Synced 5.7MB.
Connected to view '_flutterView/0xe272bb80'.
Running services/isolate.dart on Nexus 5X...
Application running.
Type "h" or F1 for this help message; type "q", F10, or ctrl-c to quit.
Type "r" or F5 to perform a hot reload of the app, and "R" to restart the app.
Type "w" to print the widget hierarchy of the app, and "t" for the render tree.
Finishing file synchronization...
Syncing files to device...
Scanning project files... 0.0s
Scanning package files... 0.3s
Scanning asset files... 0.0s
Scanning for deleted files... 0.0s
No files to remove.
Updating files...
E/flutter : [ERROR:../../flutter/assets/unzipper_provider.cc(16)] Unable to open zip file: /data/user/0/io.flutter.examples.Layers/cache/layerskphtff/services/isolate.dart
F/flutter : [FATAL:../../flutter/runtime/dart_init.cc(254)] Check failed: zip_asset_store->GetAsBuffer(kSnapshotAssetKey, &snapshot_data).
--------- beginning of crash
W/ActivityManager: Force finishing activity io.flutter.examples.Layers/org.domokit.sky.shell.SkyActivity
W/ActivityManager: Force finishing activity io.flutter.examples.Layers/org.domokit.sky.shell.SkyActivity
W/ActivityManager: Duplicate finish request for ActivityRecord{6531d4d u0 io.flutter.examples.Layers/org.domokit.sky.shell.SkyActivity t99 f}
Application finished.
Here is my flutter doctor output:
[✓] Flutter (on Linux, channel master)
• Flutter at /home/lex/projects/flutter
• Framework revision 2a81391915 (2 days ago), 2016-09-16 23:22:20
• Engine revision e4121f80a9
• Tools Dart version 1.20.0-dev.5.0
[✓] Android toolchain - develop for Android devices (Android SDK 19.1.0)
• Android SDK at /home/lex/projects/Android/Sdk
• Platform android-19, build-tools 19.1.0
• OpenJDK Runtime Environment (build 1.8.0_91-8u91-b14-3ubuntu1~16.04.1-b14)
[✓] Atom - a lightweight development environment for Flutter
• flutter plugin version 0.2.4
• dartlang plugin version 0.6.37
[✓] Connected devices
• Nexus 5X • 00dd4847616ed5cd • android-arm