Rust

Merge pull request #1483 from nicholasbishop/bishop-cleanup-unsafe-mmap #5913

Job	Run time
Build (feature permutations)	3m 44s
Build Standard Binary (nightly)	31s
Test Coverage	38s
Build (stable MSRV)	29s
Lints	1m 23s
Unit + Doc Tests (Miri)	1m 48s
Nightly (build, test, doc)	3m 13s
Unit + Doc Tests	1m 48s
Integration Test (AArch64)	1m 26s
Integration Test (IA-32)	1m 40s
Integration Test (x86_64)	1m 22s
Integration Test (x86_64 Windows)	2m 57s
	20m 59s

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