00:18 +52 ~5 -1: compiling /tmp/flutter sdk/packages/flutter/test/scheduler/benchmarks_test.dart [E]                                                                                                   
  Failed to load "/tmp/flutter sdk/packages/flutter/test/scheduler/benchmarks_test.dart": Microtasks scheduled by 'handledBeginFrame' must be run before 'handleDrawFrame'.
  package:build_web_compilers/src/dev_compiler/dart_sdk.js 3979:11                                   throw
  org-dartlang-app:/test/scheduler/benchmarks_test.dart 30:7                                         handleDrawFrame
  package:flutter/src/scheduler/org-dartlang-app:/packages/flutter/src/scheduler/binding.dart 864:5  [_handleDrawFrame]
  package:build_web_compilers/src/dev_compiler/dart_sdk.js 129700:23                                 <fn>
  package:build_web_compilers/src/dev_compiler/dart_sdk.js 29096:14                                  _rootRunUnary
  package:build_web_compilers/src/dev_compiler/dart_sdk.js 28422:14                                  runUnary
  package:build_web_compilers/src/dev_compiler/dart_sdk.js 28341:14                                  runUnaryGuarded
  package:build_web_compilers/src/dev_compiler/dart_sdk.js 28375:34                                  <fn>