Rust

test: add comment to clarify test #86

Job	Run time
Check cargo fmt	42s
Check License Header	2m 22s
linux build test	5m 8s
build with wasm-pack	3m 39s
cargo test (macos-aarch64)	10m 45s
Verify MSRV (Min Supported Rust Version)	8m 28s
Verify Vendored Code	56s
cargo check functions	2m 18s
cargo test (amd64)	16m 34s
cargo check datafusion	5m 17s
cargo test doc (amd64)	18m 33s
cargo examples (amd64)	18m 8s
clippy	6m 59s
check configs.md and ***_functions.md is up-to-date	5m 12s
check Cargo.toml formatting	4m 2s
cargo doc	4m 3s
Run sqllogictest with Postgres runner	6m 0s
cargo test pyarrow (amd64)	4m 32s
verify benchmark results (amd64)	9m 56s
cargo check no default features	8m 34s
	2h 22m 8s

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