MachineSuite.TestControllerModelWorkers fails with "Error: timed out waiting for workers"

[Aaron Bentley]

As seen here:
http://reports.vapour.ws/releases/issue/57ffb67e749a566f80ecb445

The test fails, reporting that it timed out waiting for workers.

engine_test.go:233:
    c.Fatalf("timed out waiting for workers")
... Error: timed out waiting for workers

[James Tunnicliffe (dooferlad)]

I can't recreate this. Tried varying the load on my machine and have done plenty of retries.

[Aaron Bentley (abentley)]

It is a pretty rare intermittent failure, seen only 5 times between June and October.

[Tim Penhey (thumper)]

It has been some time since the last failure.

[Launchpad Janitor (janitor)]

[Expired for juju because there has been no activity for 60 days.]