Flutter crash report; please file at https://github.com/flutter/flutter/issues.

## command

flutter packages get

## exception

YamlException: Error on line 9, column 3: Expected ':'.
  flutter:
  ^

```
#0      Scanner._staleSimpleKeys (package:yaml/src/scanner.dart:491)
#1      Scanner._fetchMoreTokens (package:yaml/src/scanner.dart:325)
#2      Scanner.peek (package:yaml/src/scanner.dart:317)
#3      Parser._parseBlockMappingKey (package:yaml/src/parser.dart:418)
#4      Parser._stateMachine (package:yaml/src/parser.dart:86)
#5      Parser.parse (package:yaml/src/parser.dart:47)
#6      Loader._loadMapping (package:yaml/src/loader.dart:171)
#7      Loader._loadNode (package:yaml/src/loader.dart:86)
#8      Loader._loadMapping (package:yaml/src/loader.dart:165)
#9      Loader._loadNode (package:yaml/src/loader.dart:86)
#10     Loader._loadDocument (package:yaml/src/loader.dart:62)
#11     Loader.load (package:yaml/src/loader.dart:54)
#12     loadYamlDocument (package:yaml/yaml.dart:51)
#13     loadYamlNode (package:yaml/yaml.dart:42)
#14     loadYaml (package:yaml/yaml.dart:34)
#15     _pluginFromPubspec (package:flutter_tools/src/plugins.dart:52)
#16     _findPlugins.<anonymous closure> (package:flutter_tools/src/plugins.dart:75)
#17     _HashVMBase&MapMixin&&_LinkedHashMapMixin.forEach (dart:collection-patch/dart:collection/compact_hash.dart:363)
#18     _findPlugins (package:flutter_tools/src/plugins.dart:73)
#19     injectPlugins (package:flutter_tools/src/plugins.dart:234)
#20     FlutterProject.ensureReadyForPlatformSpecificTooling (package:flutter_tools/src/project.dart:62)
#21     PackagesGetCommand.runCommand (package:flutter_tools/src/commands/packages.dart:85)
<asynchronous suspension>
#22     FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:344)
<asynchronous suspension>
#23     FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:279)
<asynchronous suspension>
#24     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:142)
<asynchronous suspension>
#25     _rootRun (dart:async/zone.dart:1126)
#26     _CustomZone.run (dart:async/zone.dart:1023)
#27     runZoned (dart:async/zone.dart:1501)
#28     AppContext.run (package:flutter_tools/src/base/context.dart:141)
<asynchronous suspension>
#29     FlutterCommand.run (package:flutter_tools/src/runner/flutter_command.dart:270)
#30     CommandRunner.runCommand (package:args/command_runner.dart:194)
<asynchronous suspension>
#31     FlutterCommandRunner.runCommand.<anonymous closure> (package:flutter_tools/src/runner/flutter_command_runner.dart:309)
<asynchronous suspension>
#32     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:142)
<asynchronous suspension>
#33     _rootRun (dart:async/zone.dart:1126)
#34     _CustomZone.run (dart:async/zone.dart:1023)
#35     runZoned (dart:async/zone.dart:1501)
#36     AppContext.run (package:flutter_tools/src/base/context.dart:141)
<asynchronous suspension>
#37     FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:265)
<asynchronous suspension>
#38     CommandRunner.run.<anonymous closure> (package:args/command_runner.dart:109)
#39     new Future.sync (dart:async/future.dart:222)
#40     CommandRunner.run (package:args/command_runner.dart:109)
#41     FlutterCommandRunner.run (package:flutter_tools/src/runner/flutter_command_runner.dart:174)
#42     run.<anonymous closure> (package:flutter_tools/runner.dart:59)
<asynchronous suspension>
#43     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:142)
<asynchronous suspension>
#44     _rootRun (dart:async/zone.dart:1126)
#45     _CustomZone.run (dart:async/zone.dart:1023)
#46     runZoned (dart:async/zone.dart:1501)
#47     AppContext.run (package:flutter_tools/src/base/context.dart:141)
<asynchronous suspension>
#48     runInContext (package:flutter_tools/src/context_runner.dart:43)
<asynchronous suspension>
#49     run (package:flutter_tools/runner.dart:50)
#50     main (package:flutter_tools/executable.dart:49)
<asynchronous suspension>
#51     main (file:///b/build/slave/Linux_Flutter_Packaging/build/archive/flutter/packages/flutter_tools/bin/flutter_tools.dart:8)
#52     _startIsolate.<anonymous closure> (dart:isolate-patch/dart:isolate/isolate_patch.dart:277)
#53     _RawReceivePortImpl._handleMessage (dart:isolate-patch/dart:isolate/isolate_patch.dart:165)
```

## flutter doctor

```
[✓] Flutter (Channel beta, v0.5.1, on Linux, locale en_US.UTF-8)
    • Flutter version 0.5.1 at /opt/flutter
    • Framework revision c7ea3ca377 (8 weeks ago), 2018-05-29 21:07:33 +0200
    • Engine revision 1ed25ca7b7
    • Dart version 2.0.0-dev.58.0.flutter-f981f09760

[!] Android toolchain - develop for Android devices (Android SDK 26.0.2)
    • Android SDK at /opt/android-sdk/
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 26.0.2
    • ANDROID_HOME = /opt/android-sdk
    • Java binary at: /usr/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_172-b11)
    ✗ Android license status unknown.

[✗] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.io/setup/#android-setup for detailed instructions).

[!] IntelliJ IDEA Ultimate Edition (version 2018.1)
    • IntelliJ at /opt/intellij-idea-ultimate-edition
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • For information about installing plugins, see
      https://flutter.io/intellij-setup/#installing-the-plugins

[!] VS Code (version 1.24.1)
    • VS Code at /usr/share/code
    • Flutter extension not installed; install from
      https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected devices (1 available)
    • ONE E1003 • 2bb416ea • android-arm • Android 8.1.0 (API 27)

! Doctor found issues in 4 categories.
```