Rust

Merge pull request #3157 from cgwalters/syslinux-bootprefix-fix #1906

Job	Run time
build	2m 9s
build-git-libostree	3m 20s
Build, minimum supported toolchain (MSRV)	1m 37s
build-no-features	1m 25s
cargo-deny	18s
	8m 49s

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