04:13 +0 -1: Can run web benchmarks with WASM [E]                                                                
  Caught browser-side error: Exception: `startMeasureFrame` called twice in a row.
      at module0.Error._throwWithCurrentStackTrace (http://localhost:9999/main.dart.wasm:wasm-function[1082]:0x1ab4f6)
      at module0._RecordingWidgetsBinding.handleDrawFrame (http://localhost:9999/main.dart.wasm:wasm-function[33522]:0x4b8c7b)
      at module0.__RecordingWidgetsBinding&BindingBase&GestureBinding&SchedulerBinding._handleDrawFrame (http://localhost:9999/main.dart.wasm:wasm-function[7247]:0x2495ac)
      at module0.__RecordingWidgetsBinding&BindingBase&GestureBinding&SchedulerBinding._handleDrawFrame tear-off trampoline (http://localhost:9999/main.dart.wasm:wasm-function[7249]:0x2495cc)
      at module0.invoke (http://localhost:9999/main.dart.wasm:wasm-function[4474]:0x208c6b)
      at module0.initializeEngineServices closure at org-dartlang-sdk:///lib/_engine/engine/initialization.dart:154:39 (http://localhost:9999/main.dart.wasm:wasm-function[34140]:0x4c93f3)
      at module0.closure wrapper at org-dartlang-sdk:///lib/_engine/engine/initialization.dart:154:39 trampoline (http://localhost:9999/main.dart.wasm:wasm-function[34147]:0x4c9715)
      at module0._1759 (http://localhost:9999/main.dart.wasm:wasm-function[1032]:0x1a9efb)
  dart:async                                     _Completer.completeError
  package:web_benchmarks/src/runner.dart 254:25  BenchmarkServer.run.<fn>
  ===== asynchronous gap ===========================
  dart:async                                     _CustomZone.registerUnaryCallback
  package:web_benchmarks/src/runner.dart 248:27  BenchmarkServer.run.<fn>
  package:shelf/src/cascade.dart 77:53           Cascade.handler.<fn>.<fn>
  ===== asynchronous gap ===========================
  dart:async                                     Future.then
  package:shelf/src/cascade.dart 76:58           Cascade.handler.<fn>
  package:shelf/src/cascade.dart 76:47           Cascade.handler.<fn>.<fn>
  dart:async                                     new Future.sync
  package:shelf/src/cascade.dart 76:21           Cascade.handler.<fn>
  package:shelf/shelf_io.dart 140:29             handleRequest
  package:shelf/shelf_io.dart 93:9               serveRequests.<fn>.<fn>
  ===== asynchronous gap ===========================
  dart:_http                                     _HttpServer.listen
  package:shelf/shelf_io.dart 92:14              serveRequests.<fn>
  package:shelf/src/util.dart 21:20              catchTopLevelErrors
  package:shelf/shelf_io.dart 91:3               serveRequests
  package:web_benchmarks/src/runner.dart 316:16  BenchmarkServer.run
  ===== asynchronous gap ===========================
  dart:async                                     _CustomZone.registerUnaryCallback
  package:web_benchmarks/src/runner.dart 135:42  BenchmarkServer.run
  package:web_benchmarks/server.dart 75:5        serveWebBenchmark
  benchmark/devtools_benchmarks_test.dart 61:28  _runBenchmarks
  benchmark/devtools_benchmarks_test.dart 50:15  main.<fn>