Howtoprintsha256hashinRust?(GenericArray)

I'm testing the sha2 crate (https://docs.rs/sha2/0.9.3/sha2/)

let base2: i32 = 2;
let total_size = base2.pow(24);
let mut data = vec![0u8;total_size as usize];
let mut hasher = Sha256::new();
hasher.update(data);
let result = hasher.finalize();
println!("sha256 before write: {}", result);


however I cannot print the result:

error[E0277]: `GenericArray, B0>, B0>, B0>, B0>, B0>>` doesn't implement `std::fmt::Display`
--> src/sha_check.rs:60:41
|
60 | println!("sha256 before write: {}", result);
| ^^^^^^ `GenericArray, B0>, B0>, B0>, B0>, B0>>` cannot be formatted with the default formatter


How can I dump a GenericArray?

I tried finding .finalize() but I don't know where it comes from.