Ok I have to use nightly cargo fmt

client/chain-spec/src/chain_spec.rs

@@ -64,12 +64,12 @@ impl<G: RuntimeGenesis> GenesisSource<G> {
 				let genesis: GenesisContainer<G> = json::from_reader(file)
 					.map_err(|e| format!("Error parsing spec file: {}", e))?;
 				Ok(genesis.genesis)
-			}
+			},
 			Self::Binary(buf) => {
 				let genesis: GenesisContainer<G> = json::from_reader(buf.as_ref())
 					.map_err(|e| format!("Error parsing embedded file: {}", e))?;
 				Ok(genesis.genesis)
-			}
+			},
 			Self::Factory(f) => Ok(Genesis::Runtime(f())),
 			Self::Storage(storage) => {
 				let top = storage
@@ -94,7 +94,7 @@ impl<G: RuntimeGenesis> GenesisSource<G> {
 					.collect();
 
 				Ok(Genesis::Raw(RawGenesis { top, children_default }))
-			}
+			},
 		}
 	}
 }
@@ -120,7 +120,8 @@ impl<G: RuntimeGenesis, E> BuildStorage for ChainSpec<G, E> {
 					.collect(),
 			}),
 			// The `StateRootHash` variant exists as a way to keep note that other clients support
-			// it, but Substrate itself isn't capable of loading chain specs with just a hash at the moment.
+			// it, but Substrate itself isn't capable of loading chain specs with just a hash at the
+			// moment.
 			Genesis::StateRootHash(_) => Err("Genesis storage in hash format not supported".into()),
 		}
 	}
@@ -328,7 +329,7 @@ impl<G: RuntimeGenesis, E: serde::Serialize + Clone + 'static> ChainSpec<G, E> {
 					.collect();
 
 				Genesis::Raw(RawGenesis { top, children_default })
-			}
+			},
 			(_, genesis) => genesis,
 		};
 		Ok(JsonContainer { client_spec: self.client_spec.clone(), genesis })

client/chain-spec/src/extension.rs

@@ -107,7 +107,7 @@ impl<T: Fork> Fork for Option<T> {
 			(Some(mut a), Some(b)) => {
 				a.combine_with(b);
 				Some(a)
-			}
+			},
 			(a, b) => a.or(b),
 		};
 	}