Use waitgroup to properly wait for workers to cleanup.
Use waitgroup to properly wait for workers to cleanup.

buchanae/funnel,buchanae/funnel,ohsu-comp-bio/funnel,adamstruck/funnel,ohsu-comp-bio/funnel,adamstruck/funnel,adamstruck/funnel,ohsu-comp-bio/funnel,buchanae/funnel,buchanae/funnel,adamstruck/funnel,ohsu-comp-bio/funnel