Rust

add test for conflicting column names #56

Job	Run time
Check cargo fmt	42s
Check License Header	2m 33s
build with wasm-pack	3m 39s
linux build test	4m 38s
cargo test (macos-aarch64)	15m 23s
Verify MSRV (Min Supported Rust Version)	10m 51s
Verify Vendored Code	50s
check Cargo.toml formatting	3m 54s
cargo check datafusion	5m 45s
check configs.md and ***_functions.md is up-to-date	5m 21s
clippy	9m 0s
cargo check functions	2m 18s
cargo check no default features	10m 21s
cargo doc	6m 17s
cargo test (amd64)	13m 42s
cargo test datafusion-cli (amd64)	6m 16s
cargo test doc (amd64)	20m 47s
cargo examples (amd64)	17m 23s
Run sqllogictest with Postgres runner	5m 51s
cargo test pyarrow (amd64)	3m 56s
verify benchmark results (amd64)	9m 51s
	2h 39m 18s

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