Rust

Remove Arc wrapping from create_udf's return_type #243

Job	Run time
cargo check	10m 38s
build with wasm-pack	2m 48s
Check cargo fmt	51s
cargo test (macos)	12m 1s
cargo test (macos-aarch64)	12m 43s
Verify MSRV (Min Supported Rust Version)	7m 11s
cargo test (win64)	48m 15s
Verify Vendored Code	53s
cargo test (amd64)	9m 59s
cargo doc	3m 50s
cargo test doc (amd64)	14m 57s
cargo examples (amd64)	14m 15s
cargo test datafusion-cli (amd64)	3m 57s
Run sqllogictest with Postgres runner	3m 49s
verify benchmark results (amd64)	12m 37s
check Cargo.toml formatting	3m 2s
clippy	5m 31s
check configs.md is up-to-date	3m 7s
cargo test hash collisions (amd64)	14m 48s
cargo test pyarrow (amd64)	2m 46s
	3h 7m 58s

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