Rust

Downgrade dev-dep tokio to support MSRV 1.65 #277

Job	Run time
Style Check (clippy)	52s
Code Coverage (stable/ubuntu-latest)	3m 21s
Verify MSRV	1m 31s
Integration Tests (Rust Stable with curl-client)	58s
Integration Tests (Rust Stable with h1-client)	1m 10s
README Format Check	1m 3s
Style Checks (rustfmt)	12s
Integration Tests (Rust Stable with h1-client-rustls)	56s
Unit and Doc Tests (Rust Stable on ubuntu-latest)	48s
Integration Tests (Rust Stable with hyper-client)	1m 3s
Unit and Doc Tests (Rust Stable on windows-latest)	2m 53s
Integration Tests (Rust Stable with reqwest-client-rustls)	49s
Unit and Doc Tests (Rust Stable on macOS-latest)	1m 13s
Integration Tests (Rust Stable with reqwest-client-native-tls)	1m 18s
Unit and Doc Tests (Rust Beta on ubuntu-latest)	50s
Integration Tests (Rust Stable with reqwest-client-native-tls-vendored)	2m 7s
Unit and Doc Tests (Rust Beta on windows-latest)	2m 3s
Unit and Doc Tests (Rust Beta on macOS-latest)	48s
Unit and Doc Tests (Rust Nightly on ubuntu-latest)	42s
Unit and Doc Tests (Rust Nightly on windows-latest)	3m 33s
Unit and Doc Tests (Rust Nightly on macOS-latest)	52s
pages	0s
	29m 2s

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