Currently, we share bots between the iOS 15 device and simulator EWS build queues. Since the simulator queue triggers tests, buildbot prioritizes it over the device queue, causing a buildup of pending build requests. We should dedicate at least one bot to the device queue so it is always making progress.
Pull request: https://github.com/WebKit/WebKit/pull/234
Landed https://commits.webkit.org/249076@main (r292169)!
<rdar://problem/91122921>