For example I run a task remotely. Now I decide I want to rerun it, but slightly change a parameter. So I clone the task and edit the parameter in the WebUI. Then I submit the task to a queue. When the clearml-agent pulls the tasks and tries to install the requirements, it will fail since the task requirements now contain packages that had been preinstalled in the environment (e.g. nvidia docker). These packages may not be available via pip, so the run will fail.