Slight improvements to channel benchmark#925

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arthurprs wants to merge 4 commits intocrossbeam-rs:masterfrom

arthurprs:as/assorted-bench-updates

Commits on Nov 11, 2022

Commits on Nov 13, 2022

Add comments to backoff.rs
arthurprs
committed

Commits on Nov 14, 2022

make linter happy
arthurprs
committed