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7/29/2017 2:11:35 PM
System.NullReferenceException: Object reference not set to an instance of an object.
   at VisualRust.Build.Rustc.LogRustcMessage(RustcMessageJson msg, String rootPath, TaskLoggingHelper log)
   at VisualRust.Build.CargoBuild.<ExecuteCargo>b__4_1(Object sender, DataReceivedEventArgs e)
   at System.Diagnostics.Process.OutputReadNotifyUser(String data)
   at System.Diagnostics.AsyncStreamReader.FlushMessageQueue()
   at System.Diagnostics.AsyncStreamReader.GetLinesFromStringBuilder()
   at System.Diagnostics.AsyncStreamReader.ReadBuffer(IAsyncResult ar)
   at System.IO.Stream.ReadWriteTask.InvokeAsyncCallback(Object completedTask)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.IO.Stream.ReadWriteTask.System.Threading.Tasks.ITaskCompletionAction.Invoke(Task completingTask)
   at System.Threading.Tasks.Task.FinishContinuations()
   at System.Threading.Tasks.Task.FinishStageThree()
   at System.Threading.Tasks.Task.FinishStageTwo()
   at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot)
   at System.Threading.Tasks.Task.ExecuteEntry(Boolean bPreventDoubleExecution)
   at System.Threading.Tasks.Task.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()
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