worker/envworkermanager: always stop worker on exit #2491
Merged
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This fixes an intermittent test failure in TestLoopExitKillsRunner
which happened because the underlying worker was not killed
when the loop terminated with an error.
We also change the API into a slightly more general form - there's
no need for the EnvWorkerManager to know that the worker
it's dealing with is actually a worker.Runner, and this makes
the tests slightly simpler to write (and arguably the API easier
to understand)
(Review request: http://reviews.vapour.ws/r/1858/)