replace format!("") with String::new()
replace format!("") with String::new()

use array explicitly instead of vec for const content (even if optimizer smart enought to remove allocation)

graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust