Rust

refactor: `SchemaProvider::table` can fail #134

Job	Run time
build with wasm-pack	2m 14s
cargo check	10m 4s
cargo test (win64)	48m 22s
cargo test (macos)	39m 21s
Check cargo fmt	42s
cargo test (macos-aarch64)	11m 14s
Verify MSRV (Min Supported Rust Version)	7m 27s
Verify Vendored Code	1m 0s
cargo test pyarrow (amd64)	2m 43s
verify benchmark results (amd64)	10m 30s
Run sqllogictest with Postgres runner	3m 5s
cargo test hash collisions (amd64)	10m 40s
check configs.md is up-to-date	2m 17s
check Cargo.toml formatting	3m 0s
clippy	5m 46s
cargo doc	4m 5s
cargo test (amd64)	11m 34s
cargo test datafusion-cli (amd64)	4m 3s
cargo test doc (amd64)	13m 6s
cargo examples (amd64)	8m 44s
	3h 19m 57s

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