Comment 7 for bug 1729880

To shrink the issue I set the action pruner to run every 30 seconds, then I ran a loop similar to the reported loop:

`for i in {1..100}; do juju run --unit=ubuntu/0 sleep 5 && hostname; done`

indeed,

`unit-ubuntu-0: 17:53:49 ERROR juju.worker.dependency "uniter" manifold worker returned unexpected error: executing operation "run action fb3613e4-6858-42d5-8c03-92e0009bbfc0": running action "juju-run": action "fb3613e4-6858-42d5-8c03-92e0009bbfc0" not found`

happens every once in a while.

If we tell the pruner to ignoring age:

juju model-config max-action-results-age=0h

We see the problem goes away.