Rust

style: apply/fix more clippy lints (from cargo::nursery) #7440

Job	Run time
Unit + Doc Tests	1m 8s
Integration Test (x86_64)	3m 9s
Integration Test (x86_64 Windows)	2m 28s
Integration Test (AArch64)	1m 49s
Integration Test (IA-32)	1m 49s
Nightly (build, test, doc)	3m 0s
Build (stable MSRV)	40s
Build Standard Binary (nightly)	24s
Unit + Doc Tests (Miri)	1m 8s
Test Coverage	42s
Build (uefi-raw MSRV)	33s
Build (feature permutations)	3m 53s
	20m 43s

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