Avoid reallocation for String body extraction (#2857) #4763

Job	Run time
cargo-hack	3m 26s
check-docs	24s
check	1m 1s
cargo-public-api-crates (axum)	40s
cargo-public-api-crates (axum-core)	20s
cargo-deny check (advisories)	24s
cargo-public-api-crates (axum-extra)	34s
dependencies-are-sorted	25s
cargo-deny check (bans licenses sources)	24s
Spell Check with Typos	6s
cargo-public-api-crates (axum-macros)	20s
test-versions (stable)	2m 15s
test-versions (beta)	2m 0s
armv5te-unknown-linux-musleabi	45s
test-docs	1m 48s
test-msrv	3m 4s
test-nightly	1m 25s
wasm32-unknown-unknown	22s
	19m 43s

Provide feedback