Rust

Minor: Return option from row_group_row_count (#10973) #13

Job	Run time
build with wasm-pack	2m 41s
cargo check	3m 43s
cargo test (macos)	10m 47s
Check cargo fmt	44s
cargo test (macos-aarch64)	11m 1s
Verify Vendored Code	59s
Verify MSRV (Min Supported Rust Version)	6m 33s
cargo test (win64)	33m 19s
cargo test hash collisions (amd64)	8m 48s
clippy	5m 10s
check Cargo.toml formatting	2m 42s
check configs.md is up-to-date	2m 44s
cargo doc	3m 53s
cargo test (amd64)	10m 0s
cargo test datafusion-cli (amd64)	3m 33s
cargo test doc (amd64)	12m 44s
cargo examples (amd64)	11m 55s
Run sqllogictest with Postgres runner	3m 20s
cargo test pyarrow (amd64)	2m 43s
verify benchmark results (amd64)	10m 24s
	2h 27m 43s

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