Racy spec: HubSpec.BroadcastHub_must_send_the_same_elements_to_consumers_attaching_around_the_same_time #2370
Description
Stack trace:
Failure logged here: http://petabridge-ci.cloudapp.net/viewLog.html?buildId=17022&buildTypeId=AkkaNet_AkkaNetLinuxMonoUnitTests&guest=1
```
Assert.True() Failure
Expected: True
Actual: False
at Akka.TestKit.AkkaSpecExtensions.ShouldBeTrue (Boolean b, System.String message) <0x41156560 + 0x00013> in :0
at Akka.Streams.TestKit.Tests.Utils.AwaitResult[T] (System.Threading.Tasks.Task`1 task, Nullable`1 timeout) <0x411550b0 + 0x0008f> in :0
at Akka.Streams.Tests.Dsl.HubSpec.m__C () <0x41464070 + 0x0028f> in :0
at Akka.Streams.TestKit.Tests.Utils+c__AnonStorey0.<>m__0 () <0x40fa8770 + 0x00019> in :0
at Akka.Streams.TestKit.Tests.Utils.AssertAllStagesStopped[T] (Akka.TestKit.AkkaSpec spec, System.Func`1 block, IMaterializer materializer) <0x40fa1370 + 0x001ee> in :0
at Akka.Streams.TestKit.Tests.Utils.AssertAllStagesStopped (Akka.TestKit.AkkaSpec spec, System.Action block, IMaterializer materializer) <0x40fa07c0 + 0x0012f> in :0
at Akka.Streams.Tests.Dsl.HubSpec.BroadcastHub_must_send_the_same_elements_to_consumers_attaching_around_the_same_time () <0x41463f90 + 0x000ab> in :0
at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) <0x40ea24e0 + 0x000b7> in :0
```