Replace Index for Nonce (#2740)

* replace Index for Nonce

* update lockfile for {"substrate", "polkadot"}

---------

Co-authored-by: parity-processbot <>

cumulus/bridges/primitives/runtime/src/chain.rs

@@ -147,7 +147,7 @@ pub trait Chain: Send + Sync + 'static {
 		+ TryFrom<sp_core::U256>
 		+ MaxEncodedLen;
 	/// Index of a transaction used by the chain.
-	type Index: Parameter
+	type Nonce: Parameter
 		+ Member
 		+ MaybeSerialize
 		+ Debug
@@ -181,7 +181,7 @@ where
 	type Block = <T::Chain as Chain>::Block;
 	type AccountId = <T::Chain as Chain>::AccountId;
 	type Balance = <T::Chain as Chain>::Balance;
-	type Index = <T::Chain as Chain>::Index;
+	type Nonce = <T::Chain as Chain>::Nonce;
 	type Signature = <T::Chain as Chain>::Signature;
 
 	fn max_extrinsic_size() -> u32 {
@@ -237,7 +237,7 @@ pub type AccountIdOf<C> = <C as Chain>::AccountId;
 pub type BalanceOf<C> = <C as Chain>::Balance;
 
 /// Transaction index type used by the chain.
-pub type IndexOf<C> = <C as Chain>::Index;
+pub type NonceOf<C> = <C as Chain>::Nonce;
 
 /// Signature type used by the chain.
 pub type SignatureOf<C> = <C as Chain>::Signature;

cumulus/bridges/primitives/runtime/src/lib.rs

@@ -31,7 +31,7 @@ use sp_std::{convert::TryFrom, fmt::Debug, ops::RangeInclusive, vec, vec::Vec};
 
 pub use chain::{
 	AccountIdOf, AccountPublicOf, BalanceOf, BlockNumberOf, Chain, EncodedOrDecodedCall, HashOf,
-	HasherOf, HeaderOf, IndexOf, Parachain, ParachainIdOf, SignatureOf, TransactionEraOf,
+	HasherOf, HeaderOf, NonceOf, Parachain, ParachainIdOf, SignatureOf, TransactionEraOf,
 	UnderlyingChainOf, UnderlyingChainProvider,
 };
 pub use frame_support::storage::storage_prefix as storage_value_final_key;