Rust

fix clippy #16

Job	Run time
cargo check	2m 2s
build with wasm-pack	2m 23s
cargo test (win64)	34m 28s
Check cargo fmt	41s
cargo test (macos)	9m 51s
cargo test (macos-aarch64)	8m 47s
Verify MSRV (Min Supported Rust Version)	6m 31s
Verify Vendored Code	49s
cargo test datafusion-cli (amd64)	0s
cargo test (amd64)	0s
cargo doc	0s
cargo test doc (amd64)	0s
cargo examples (amd64)	0s
verify benchmark results (amd64)	0s
clippy	0s
cargo test hash collisions (amd64)	0s
Run sqllogictest with Postgres runner	0s
cargo test pyarrow (amd64)	0s
check Cargo.toml formatting	0s
check configs.md is up-to-date	0s
	1h 5m 32s

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