Rust

Fix clippy #604

Job	Run time
cargo check	2m 12s
cargo test (mac)	13m 21s
Check cargo fmt	40s
build with wasm-pack	1m 53s
Verify Vendored Code	46s
cargo test (win64)	3h 22m 17s
Verify MSRV	6m 12s
Run sqllogictest with Postgres runner	3m 0s
cargo test hash collisions (amd64)	8m 46s
clippy	2m 17s
check Cargo.toml formatting	1m 23s
cargo doc	3m 4s
cargo test (amd64)	9m 23s
cargo test datafusion-cli (amd64)	2m 57s
cargo test doc (amd64)	9m 13s
cargo examples (amd64)	6m 12s
cargo test pyarrow (amd64)	2m 5s
verify benchmark results (amd64)	9m 34s
check configs.md is up-to-date	2m 18s
	4h 47m 33s

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