avoid cloning the state in layer #4915

Job	Run time
cargo-hack	5m 12s
cargo-public-api-crates (axum)	33s
check	1m 30s
cargo-public-api-crates (axum-core)	21s
check-docs	42s
cargo-deny check (advisories)	26s
cargo-public-api-crates (axum-extra)	33s
cargo-deny check (bans licenses sources)	26s
cargo-public-api-crates (axum-macros)	22s
dependencies-are-sorted	13s
Spell Check with Typos	6s
test-docs	1m 28s
test-versions (stable)	2m 37s
test-versions (beta)	2m 38s
test-msrv	1m 56s
armv5te-unknown-linux-musleabi	52s
test-nightly	1m 31s
wasm32-unknown-unknown	16s
	21m 42s

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