Rust

Improve`Signature` and `comparison_coercion` documentation (#13840) #36173

Job	Run time
Check License Header	2m 12s
cargo check	13m 18s
build with wasm-pack	3m 9s
Check cargo fmt	45s
cargo test (macos)	12m 15s
cargo test (macos-aarch64)	13m 32s
Verify MSRV (Min Supported Rust Version)	8m 45s
Verify Vendored Code	50s
cargo doc	4m 22s
cargo test (amd64)	13m 2s
cargo test doc (amd64)	17m 37s
cargo test datafusion-cli (amd64)	5m 16s
cargo examples (amd64)	15m 1s
check Cargo.toml formatting	3m 31s
clippy	7m 2s
check configs.md and ***_functions.md is up-to-date	3m 46s
cargo test hash collisions (amd64)	29m 29s
Run sqllogictest with Postgres runner	4m 10s
cargo test pyarrow (amd64)	3m 9s
verify benchmark results (amd64)	15m 48s
	2h 56m 59s

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