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

## command

flutter packages get

## exception

YamlException: Error on line 59, column 10: While parsing a block collection, expected '-'.
         style: normal
         ^

```
#0      Parser._parseBlockSequenceEntry (package:yaml/src/parser.dart:376)
#1      Parser._stateMachine (package:yaml/src/parser.dart:77)
#2      Parser.parse (package:yaml/src/parser.dart:47)
#3      Loader._loadSequence (package:yaml/src/loader.dart:142)
#4      Loader._loadNode (package:yaml/src/loader.dart:84)
#5      Loader._loadMapping (package:yaml/src/loader.dart:165)
#6      Loader._loadNode (package:yaml/src/loader.dart:86)
#7      Loader._loadSequence (package:yaml/src/loader.dart:141)
#8      Loader._loadNode (package:yaml/src/loader.dart:84)
#9      Loader._loadMapping (package:yaml/src/loader.dart:165)
#10     Loader._loadNode (package:yaml/src/loader.dart:86)
#11     Loader._loadMapping (package:yaml/src/loader.dart:165)
#12     Loader._loadNode (package:yaml/src/loader.dart:86)
#13     Loader._loadDocument (package:yaml/src/loader.dart:62)
#14     Loader.load (package:yaml/src/loader.dart:54)
#15     loadYamlDocument (package:yaml/yaml.dart:51)
#16     loadYamlNode (package:yaml/yaml.dart:42)
#17     loadYaml (package:yaml/yaml.dart:34)
#18     _pluginFromPubspec (package:flutter_tools/src/plugins.dart:52)
#19     _findPlugins.<anonymous closure> (package:flutter_tools/src/plugins.dart:75)
#20     _HashVMBase&MapMixin&&_LinkedHashMapMixin.forEach (dart:collection-patch/dart:collection/compact_hash.dart:363)
#21     _findPlugins (package:flutter_tools/src/plugins.dart:73)
#22     injectPlugins (package:flutter_tools/src/plugins.dart:234)
#23     FlutterProject.ensureReadyForPlatformSpecificTooling (package:flutter_tools/src/project.dart:62)
<asynchronous suspension>
#24     PackagesGetCommand.runCommand (package:flutter_tools/src/commands/packages.dart:85)
<asynchronous suspension>
#25     FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:347)
#26     _asyncThenWrapperHelper.<anonymous closure> (dart:async-patch/dart:async/async_patch.dart:77)
#27     _rootRunUnary (dart:async/zone.dart:1134)
#28     _CustomZone.runUnary (dart:async/zone.dart:1031)
#29     _FutureListener.handleValue (dart:async/future_impl.dart:129)
#30     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:638)
#31     Future._propagateToListeners (dart:async/future_impl.dart:667)
#32     Future._complete (dart:async/future_impl.dart:472)
#33     _SyncCompleter.complete (dart:async/future_impl.dart:51)
#34     _AsyncAwaitCompleter.complete.<anonymous closure> (dart:async-patch/dart:async/async_patch.dart:33)
#35     _rootRun (dart:async/zone.dart:1126)
#36     _CustomZone.run (dart:async/zone.dart:1023)
#37     _CustomZone.bindCallback.<anonymous closure> (dart:async/zone.dart:949)
#38     _microtaskLoop (dart:async/schedule_microtask.dart:41)
#39     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50)
#40     _runPendingImmediateCallback (dart:isolate-patch/dart:isolate/isolate_patch.dart:113)
#41     _RawReceivePortImpl._handleMessage (dart:isolate-patch/dart:isolate/isolate_patch.dart:166)
```

## flutter doctor

```
[✓] Flutter (Channel master, v0.5.6-pre.39, on Mac OS X 10.13.5 17F77, locale en-IN)
    • Flutter version 0.5.6-pre.39 at /Users/pawankumar/Desktop/flutter/flutter
    • Framework revision a18f5e84a1 (2 days ago), 2018-06-20 20:23:51 -0400
    • Engine revision 549c855e89
    • Dart version 2.0.0-dev.63.0.flutter-4c9689c1d2

[✓] Android toolchain - develop for Android devices (Android SDK 28.0.0-rc2)
    • Android SDK at /Users/pawankumar/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.0-rc2
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
    • All Android licenses accepted.

[✓] iOS toolchain - develop for iOS devices (Xcode 9.4.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 9.4.1, Build version 9F2000
    • ios-deploy 1.9.2
    • CocoaPods version 1.5.2

[✓] Android Studio
    • Android Studio at /Applications/Android Studio 3.2 Preview.app/Contents
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b02)

[✓] Android Studio (version 3.1)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 25.0.1
    • Dart plugin version 173.4700
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)

[✓] IntelliJ IDEA Ultimate Edition (version 2018.1.5)
    • IntelliJ at /Applications/IntelliJ IDEA.app
    • Flutter plugin version 25.0.2
    • Dart plugin version 181.4892.1

[✓] Connected devices (1 available)
    • PK iPhone • 582f750ea2e93342895f4ce99785ede563d5461c • ios • iOS 11.4

• No issues found!
```