Rust

Fix clippy #608

Job	Run time
Check cargo fmt	42s
cargo check	2m 3s
cargo test (mac)	26m 2s
Verify MSRV	6m 7s
Verify Vendored Code	46s
cargo test (win64)	3h 23m 9s
build with wasm-pack	1m 57s
cargo doc	2m 59s
Run sqllogictest with Postgres runner	3m 5s
check Cargo.toml formatting	1m 22s
cargo test hash collisions (amd64)	8m 52s
check configs.md is up-to-date	2m 10s
clippy	2m 4s
cargo test (amd64)	8m 59s
cargo test datafusion-cli (amd64)	2m 57s
cargo test doc (amd64)	9m 13s
cargo examples (amd64)	6m 5s
cargo test pyarrow (amd64)	2m 7s
verify benchmark results (amd64)	9m 51s
	5h 0m 30s

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