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Waker::will_wake: Compare vtable address instead of its content Optimize will_wake implementation by comparing vtable address instead of its content. The existing best practice to avoid false negatives from will_wake is to define a waker vtable as a static item. That approach continues to works with the new implementation. While this potentially changes the observable behaviour, the function is documented to work on a best-effort basis. The PartialEq impl for RawWaker remains as it was.