Exceptions in Pipeline contributors cause infinite nested-pipeline loops

[Andrew Bullock <trullock@…>]

repro:

public class LoopPipelineContributor? : IPipelineContributor {

public void Initialize(IPipeline pipelineNotification) {

pipelineNotification.Notify(execute).After<KnownStages?.IOperationResultInvo cation>();

} private PipelineContinuation? execute(ICommunicationContext arg) {

throw new NotImplementedException?();

}

}