Andrew Gallant 109460fce2
ignore: simplify parallel worker initialization
We can just ask the channel whether any work has been loaded. Normally
querying a channel for its length is a strong predictor of bugs, but in
this case, we do it before we ever attempt a `recv`, so it should work.

Kudos to @zsugabubus for suggesting this!
2020-02-20 16:50:41 -05:00
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