Rust

Fix lints/tests on nightly and unpin the CI nightly version #7112

Job	Run time
Integration Test (AArch64)	1m 12s
Integration Test (x86_64)	1m 15s
Integration Test (IA-32)	1m 24s
Unit + Doc Tests (Miri)	1m 5s
Unit + Doc Tests	41s
Build (stable MSRV)	33s
Nightly (build, test, doc)	2m 33s
Build (uefi-raw MSRV)	29s
Test Coverage	42s
Integration Test (x86_64 Windows)	4m 5s
Build (feature permutations)	3m 49s
Build Standard Binary (nightly)	25s
	18m 13s

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