Command 'rub' is not supported by Azure Pipelines.
Supported commands
help:
Get descriptions, examples and documentation about supported commands
Example: help "command_name"
list:
List all pipelines for this repository using a comment.
Example: "list"
run:
Run all pipelines or a specific pipeline for this repository using a comment. Use this command by itself to trigger all related pipelines, or specify a pipeline to run.
Example: "run" or "run pipeline_name"
where:
Report back the Azure DevOps orgs that are related to this repository and org