Rust

Merge pull request #3107 from cgwalters/drop-userxattr-test #1790

Job	Run time
build	2m 54s
Build, minimum supported toolchain (MSRV)	1m 20s
build-git-libostree	3m 3s
build-no-features	1m 21s
cargo-deny	19s
	8m 57s

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