Rust

Speed up optimize_projection by improving is_projection_unnecessary (… #20

Job	Run time
linux build test	5m 9s
Check cargo fmt	41s
Check License Header	2m 29s
cargo test (macos-aarch64)	12m 8s
Verify Vendored Code	54s
Verify MSRV (Min Supported Rust Version)	9m 43s
build and run with wasm-pack	6m 37s
cargo check datafusion-common features	1m 20s
cargo check datafusion-substrait features	9m 58s
cargo check datafusion-proto features	5m 21s
verify benchmark results (amd64)	10m 8s
cargo test datafusion-cli (amd64)	4m 11s
cargo examples (amd64)	16m 37s
cargo check datafusion features	13m 12s
cargo doc	4m 21s
cargo test doc (amd64)	18m 30s
Run sqllogictest with Postgres runner	5m 54s
check Cargo.toml formatting	2m 57s
clippy	7m 6s
cargo check datafusion-functions features	2m 44s
cargo test (amd64)	15m 56s
cargo test pyarrow (amd64)	3m 38s
check configs.md and ***_functions.md is up-to-date	4m 13s
	2h 43m 47s

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