Rust

Add MSRV minimal versions in CI #271

Job	Run time
Style Checks (rustfmt)	14s
Style Check (clippy)	54s
Code Coverage (stable/ubuntu-latest)	3m 36s
Integration Tests (Rust Stable with curl-client)	53s
Verify MSRV	4m 23s
README Format Check	1m 10s
Integration Tests (Rust Stable with h1-client)	1m 5s
Integration Tests (Rust Stable with h1-client-rustls)	48s
Integration Tests (Rust Stable with hyper-client)	49s
Unit and Doc Tests (Rust Stable on ubuntu-latest)	17s
Integration Tests (Rust Stable with reqwest-client-rustls)	47s
Unit and Doc Tests (Rust Stable on windows-latest)	3m 8s
Integration Tests (Rust Stable with reqwest-client-native-tls)	28s
Unit and Doc Tests (Rust Stable on macOS-latest)	18s
Integration Tests (Rust Stable with reqwest-client-native-tls-vendored)	1m 42s
Unit and Doc Tests (Rust Beta on ubuntu-latest)	26s
Unit and Doc Tests (Rust Beta on windows-latest)	1m 15s
Unit and Doc Tests (Rust Beta on macOS-latest)	24s
Unit and Doc Tests (Rust Nightly on ubuntu-latest)	18s
Unit and Doc Tests (Rust Nightly on windows-latest)	1m 14s
Unit and Doc Tests (Rust Nightly on macOS-latest)	24s
pages	0s
	24m 33s

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