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							- extern crate rand;
 
- extern crate vergen;
 
- use rand::distributions::Alphanumeric;
 
- use rand::Rng;
 
- use vergen::{generate_cargo_keys, ConstantsFlags};
 
- fn main() {
 
-     let mut flags = ConstantsFlags::all();
 
-     flags.toggle(ConstantsFlags::REBUILD_ON_HEAD_CHANGE);
 
-     generate_cargo_keys(ConstantsFlags::all()).expect("Unable to generate the cargo keys!");
 
-     let mut rng = rand::thread_rng();
 
-     let build_id: String = ::std::iter::repeat(())
 
-         .map(|()| rng.sample(Alphanumeric))
 
-         .take(8)
 
-         .collect();
 
-     println!("cargo:rustc-env=VERGEN_BUILD_ID={}", build_id);
 
- }
 
 
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