-/// Create a random number generator with a default algorithm and seed.
-///
-/// It returns the strongest `Rng` algorithm currently implemented in
-/// pure Rust. If you require a specifically seeded `Rng` for
-/// consistency over time you should pick one algorithm and create the
-/// `Rng` yourself.
-///
-/// This is a very expensive operation as it has to read randomness
-/// from the operating system and use this in an expensive seeding
-/// operation. If one does not require high performance generation of
-/// random numbers, `task_rng` and/or `random` may be more
-/// appropriate.
-#[deprecated="use `task_rng` or `StdRng::new`"]
-pub fn rng() -> StdRng {
- StdRng::new().unwrap()
-}
-