components-registrator-derefmut.md

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title: "`ComponentsRegistrator` no longer implements `DerefMut`"
pull_requests: [14791, 15458, 15269]

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ComponentsRegistrator no longer implements DerefMut<Target = Components>, meaning you won't be able to get a &mut Components from it. The only two methods on Components that took &mut self (any_queued_mut and num_queued_mut) have been reimplemented on ComponentsRegistrator, meaning you won't need to migrate them. Other usages of &mut Components were unsupported.