I'm using utoipa, utoipa-swagger-ui in combination with axum and i noticed that utoipa-swagger-ui breaks the reproducability when building with cargo build --release. Without --release it's the same sha256. I reduced the example for axum in this repo down to the minimum so you can test this yourself: https://github.com/daywalker90/reprotest

Also tested different versions: 9 and 8.1 both have this problem.