Expose typestate variables #2729

Job	Run time
build_versions (stable)	24s
Test	1m 23s
build_versions (beta)	35s
Test	1m 46s
Test (charset)	2m 5s
build_versions (1.71.1)	20s
cargo-deny (aarch64-apple-ios)	25s
Test (charset)	1m 2s
Test (cookies)	1m 32s
cargo-deny (aarch64-linux-android)	26s
Test (cookies)	1m 21s
Test (socks-proxy)	1m 19s
cargo-deny (i686-pc-windows-gnu)	25s
Test (socks-proxy)	1m 0s
Docs	2m 24s
Test (gzip)	1m 20s
cargo-deny (i686-pc-windows-msvc)	24s
Test (gzip)	1m 18s
Test (brotli)	59s
cargo-deny (i686-unknown-linux-gnu)	28s
Test (brotli)	1m 33s
Test (json)	1m 22s
Lint	33s
cargo-deny (wasm32-unknown-unknown)	20s
Test (json)	1m 32s
Test (native-tls)	1m 25s
cargo-deny (x86_64-apple-darwin)	39s
Test (native-tls)	1m 54s
Test (rustls-no-provider)	1m 24s
cargo-deny (x86_64-apple-ios)	22s
cargo-deny (x86_64-pc-windows-gnu)	26s
cargo-deny (x86_64-pc-windows-msvc)	24s
cargo-deny (x86_64-unknown-linux-gnu)	25s
cargo-deny (x86_64-unknown-redox)	36s
	33m 51s

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