composition_test.dart: Text Editing Delta Model should emit changed composition                                                                                                         
00:40 +652 ~7 -1: composition_test.dart: Text Editing Delta Model should emit changed composition [E]                                                                                                  
   TimeoutException after 0:00:30.000000: Test timed out after 30 seconds. See https://pub.dev/packages/test#timeouts
   home/chrome-bot/.pub-cache/hosted/pub.dev/test_api-0.7.4/lib/src/backend/invoker.dart 338:9   call
   org-dartlang-sdk:///lib/async/zone.dart 1517:39                                               _rootRun
   org-dartlang-sdk:///lib/async/zone.dart 1421:34                                               run
   home/chrome-bot/.pub-cache/hosted/pub.dev/test_api-0.7.4/lib/src/backend/invoker.dart 336:5   _handleError
   home/chrome-bot/.pub-cache/hosted/pub.dev/test_api-0.7.4/lib/src/backend/invoker.dart 331:8   _handleError
   org-dartlang-sdk:///lib/async/zone.dart 1525:12                                               _rootRun
   org-dartlang-sdk:///lib/async/zone.dart 1421:34                                               run
   home/chrome-bot/.pub-cache/hosted/pub.dev/test_api-0.7.4/lib/src/backend/invoker.dart 290:38  call
   org-dartlang-sdk:///lib/_internal/js_runtime/lib/async_patch.dart 146:9                       call