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changes:
-Zmiri-tag-raw-pointersis enabled. This raises MSRV offutures-taskto 1.45. (Run Miri on CI #2548, Fix stacked borrows violations with -Zmiri-tag-raw-pointers in waker_ref and FuturesUnordered #2550)FuturesUnorderedto respect yielding from future (FuturesUnordered: Respect yielding from future #2551)StreamExt::{flatten_unordered, flat_map_unordered}(BasicStreamExt::{flatten_unordered, flat_map_unordered}impls #2083)backports:
StreamExt::{flatten_unordered, flat_map_unordered}impls #2083