cargo fmt + downgrade from zebra

primitives/core/src/crypto.rs

@@ -1358,8 +1358,8 @@ mod tests {
 				None,
 			))
 		}
-		fn from_seed(_seed: &<TestPair as Pair>::Seed) -> Self {
-			TestPair::Seed(_seed.as_ref().to_owned())
+		fn from_seed(seed: <TestPair as Pair>::Seed) -> Self {
+			TestPair::Seed(seed.as_ref().to_owned())
 		}
 		fn sign(&self, _message: &[u8]) -> Self::Signature {
 			[]

primitives/core/src/ed25519.rs

@@ -476,9 +476,7 @@ impl TraitPair for Pair {
 	///
 	/// You should never need to use this; generate(), generate_with_phrase
 	fn from_seed(seed: Seed) -> Pair {
-		let secret = SigningKey::from(seed);
-		let public = VerificationKey::from(&secret);
-		Pair {secret, public}
+		Self::from_seed_slice(&seed[..]).expect("seed has valid length; qed")
 	}
 
 	/// Make a new key pair from secret seed material. The slice must be 32 bytes long or it