Rust

Added cargo.lock in gitignore #265

Job	Run time
build	2m 46s
linting	1m 1s
cross-testing (stable, ubuntu-latest)	1m 31s
cross-testing (stable, windows-latest)	2m 38s
cross-testing (stable, macos-latest)	2m 5s
cross-testing (nightly, ubuntu-latest)	1m 26s
cross-testing (nightly, windows-latest)	2m 40s
cross-testing (nightly, macos-latest)	2m 18s
cross-testing (1.64, ubuntu-latest)	1m 40s
cross-testing (1.64, windows-latest)	2m 37s
cross-testing (1.64, macos-latest)	2m 50s
	23m 32s

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