Rust

Refactor expect to Result<> mapping #260

Job	Run time
Style Checks (rustfmt)	10s
Code Coverage (stable/ubuntu-latest)	3m 36s
Style Check (clippy)	52s
Integration Tests (Rust Stable with curl-client)	50s
Integration Tests (Rust Stable with h1-client)	49s
README Format Check	1m 9s
Integration Tests (Rust Stable with h1-client-rustls)	53s
Unit and Doc Tests (Rust MSRV on ubuntu-latest)	56s
Integration Tests (Rust Stable with hyper-client)	1m 0s
Unit and Doc Tests (Rust MSRV on windows-latest)	2m 50s
Integration Tests (Rust Stable with reqwest-client-rustls)	32s
Integration Tests (Rust Stable with reqwest-client-native-tls)	41s
Unit and Doc Tests (Rust MSRV on macOS-latest)	1m 8s
Unit and Doc Tests (Rust Stable on ubuntu-latest)	31s
Integration Tests (Rust Stable with reqwest-client-native-tls-vendored)	1m 56s
Unit and Doc Tests (Rust Stable on windows-latest)	3m 2s
Unit and Doc Tests (Rust Stable on macOS-latest)	19s
Unit and Doc Tests (Rust Beta on ubuntu-latest)	26s
Unit and Doc Tests (Rust Beta on windows-latest)	1m 53s
Unit and Doc Tests (Rust Beta on macOS-latest)	25s
Unit and Doc Tests (Rust Nightly on ubuntu-latest)	24s
Unit and Doc Tests (Rust Nightly on windows-latest)	56s
Unit and Doc Tests (Rust Nightly on macOS-latest)	38s
pages	0s
	25m 56s

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