Rust

Switch to `type_union_resolution` #53

Job	Run time
Check License Header	2m 17s
Check cargo fmt	42s
cargo check	8m 25s
build with wasm-pack	2m 37s
cargo test (macos)	10m 44s
cargo test (macos-aarch64)	10m 0s
Verify MSRV (Min Supported Rust Version)	8m 56s
Verify Vendored Code	46s
cargo test (win64)	1h 7m 0s
check configs.md and ***_functions.md is up-to-date	3m 16s
clippy	6m 17s
check Cargo.toml formatting	2m 51s
cargo test hash collisions (amd64)	18m 11s
cargo doc	4m 53s
cargo test (amd64)	11m 36s
cargo test doc (amd64)	16m 29s
cargo test datafusion-cli (amd64)	4m 40s
cargo examples (amd64)	14m 11s
Run sqllogictest with Postgres runner	3m 55s
cargo test pyarrow (amd64)	3m 5s
verify benchmark results (amd64)	13m 12s
	3h 34m 3s

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