Rust

Add MSRV minimal versions in CI #263

Job	Run time
Style Check (clippy)	52s
README Format Check	20s
Code Coverage (stable/ubuntu-latest)	2m 39s
Integration Tests (Rust Stable with curl-client)	44s
Integration Tests (Rust Stable with h1-client)	49s
Style Checks (rustfmt)	12s
Integration Tests (Rust Stable with h1-client-rustls)	48s
Unit and Doc Tests (Rust MSRV on ubuntu-latest)	22s
Integration Tests (Rust Stable with hyper-client)	43s
Unit and Doc Tests (Rust MSRV on windows-latest)	43s
Integration Tests (Rust Stable with reqwest-client-rustls)	32s
Unit and Doc Tests (Rust MSRV on macOS-latest)	32s
Unit and Doc Tests (Rust Stable on ubuntu-latest)	31s
Integration Tests (Rust Stable with reqwest-client-native-tls)	25s
Unit and Doc Tests (Rust Stable on windows-latest)	1m 46s
Integration Tests (Rust Stable with reqwest-client-native-tls-vendored)	1m 57s
Unit and Doc Tests (Rust Stable on macOS-latest)	12s
Unit and Doc Tests (Rust Beta on ubuntu-latest)	22s
Unit and Doc Tests (Rust Beta on windows-latest)	1m 4s
Unit and Doc Tests (Rust Beta on macOS-latest)	22s
Unit and Doc Tests (Rust Nightly on ubuntu-latest)	19s
Unit and Doc Tests (Rust Nightly on windows-latest)	46s
Unit and Doc Tests (Rust Nightly on macOS-latest)	18s
pages	1s
	17m 19s

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