Rust

Add MSRV minimal versions in CI #275

Job	Run time
README Format Check	1m 17s
Style Check (clippy)	54s
Verify MSRV	17s
Integration Tests (Rust Stable with curl-client)	47s
Style Checks (rustfmt)	14s
Integration Tests (Rust Stable with h1-client)	1m 1s
Unit and Doc Tests (Rust Stable on ubuntu-latest)	19s
Integration Tests (Rust Stable with h1-client-rustls)	1m 5s
Unit and Doc Tests (Rust Stable on windows-latest)	1m 1s
Code Coverage (stable/ubuntu-latest)	3m 44s
Integration Tests (Rust Stable with hyper-client)	49s
Unit and Doc Tests (Rust Stable on macOS-latest)	20s
Integration Tests (Rust Stable with reqwest-client-rustls)	48s
Unit and Doc Tests (Rust Beta on ubuntu-latest)	24s
Integration Tests (Rust Stable with reqwest-client-native-tls)	32s
Unit and Doc Tests (Rust Beta on windows-latest)	1m 16s
Integration Tests (Rust Stable with reqwest-client-native-tls-vendored)	1m 45s
Unit and Doc Tests (Rust Beta on macOS-latest)	30s
Unit and Doc Tests (Rust Nightly on ubuntu-latest)	17s
Unit and Doc Tests (Rust Nightly on windows-latest)	1m 1s
Unit and Doc Tests (Rust Nightly on macOS-latest)	28s
pages	0s
	18m 49s

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