Update dependecies (#2277) (#2281)

* cargo update -p parachain-info

* flush

* it compiles

* clippy

* temporary add more logging to cargo deny

* Revert "temporary add more logging to cargo deny"

This reverts commit 20daa88bca6d9a01dbe933579b1d57ae5c3a7bd8.

* list installed Rust binaries before running cargo deny

* changed prev commit

* once again

* try cargo update?

* post-update fixes (nothing important)

bridges/primitives/beefy/Cargo.toml

@@ -9,7 +9,7 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 [dependencies]
 codec = { package = "parity-scale-codec", version = "3.0.0", default-features = false, features = ["derive", "bit-vec"] }
 scale-info = { version = "2.9.0", default-features = false, features = ["bit-vec", "derive"] }
-serde = { version = "1.0", optional = true }
+serde = { version = "1.0", default-features = false, features = ["alloc", "derive"] }
 
 # Bridge Dependencies
 
@@ -34,7 +34,7 @@ std = [
 	"pallet-beefy-mmr/std",
 	"pallet-mmr/std",
 	"scale-info/std",
-	"serde",
+	"serde/std",
 	"sp-consensus-beefy/std",
 	"sp-runtime/std",
 	"sp-std/std"

bridges/primitives/beefy/src/lib.rs

@@ -37,6 +37,7 @@ use bp_runtime::{BasicOperatingMode, BlockNumberOf, Chain, HashOf};
 use codec::{Decode, Encode};
 use frame_support::Parameter;
 use scale_info::TypeInfo;
+use serde::{Deserialize, Serialize};
 use sp_runtime::{
 	traits::{Convert, MaybeSerializeDeserialize},
 	RuntimeAppPublic, RuntimeDebug,
@@ -127,8 +128,7 @@ pub type BeefyMmrLeafOf<C> = sp_consensus_beefy::mmr::MmrLeaf<
 ///
 /// Provides the initial context that the bridge needs in order to know
 /// where to start the sync process from.
-#[derive(Encode, Decode, RuntimeDebug, PartialEq, Clone, TypeInfo)]
-#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize))]
+#[derive(Encode, Decode, RuntimeDebug, PartialEq, Clone, TypeInfo, Serialize, Deserialize)]
 pub struct InitializationData<BlockNumber, Hash> {
 	/// Pallet operating mode.
 	pub operating_mode: BasicOperatingMode,

bridges/primitives/chain-bridge-hub-cumulus/src/lib.rs

@@ -18,7 +18,7 @@
 
 pub use bp_polkadot_core::{
 	AccountId, AccountInfoStorageMapKeyProvider, AccountPublic, Balance, BlockNumber, Hash, Hasher,
-	Hashing, Header, Index, Nonce, Perbill, Signature, SignedBlock, UncheckedExtrinsic,
+	Hashing, Header, Nonce, Perbill, Signature, SignedBlock, UncheckedExtrinsic,
 	EXTRA_STORAGE_PROOF_SIZE, TX_EXTRA_BYTES,
 };
 
@@ -53,7 +53,7 @@ pub const NORMAL_DISPATCH_RATIO: Perbill = Perbill::from_percent(75);
 /// This is a copy-paste from the cumulus repo's `parachains-common` crate.
 const MAXIMUM_BLOCK_WEIGHT: Weight = Weight::from_parts(constants::WEIGHT_REF_TIME_PER_SECOND, 0)
 	.saturating_div(2)
-	.set_proof_size(polkadot_primitives::v4::MAX_POV_SIZE as u64);
+	.set_proof_size(polkadot_primitives::v5::MAX_POV_SIZE as u64);
 
 /// All cumulus bridge hubs assume that about 5 percent of the block weight is consumed by
 /// `on_initialize` handlers. This is used to limit the maximal weight of a single extrinsic.
@@ -140,7 +140,7 @@ pub type SignedExtra = (
 	CheckTxVersion,
 	CheckGenesis<Hash>,
 	CheckEra<Hash>,
-	CheckNonce<Index>,
+	CheckNonce<Nonce>,
 	CheckWeight,
 	ChargeTransactionPayment<Balance>,
 	BridgeRejectObsoleteHeadersAndMessages,
@@ -159,12 +159,12 @@ pub trait BridgeHubSignedExtension {
 		transaction_version: u32,
 		era: bp_runtime::TransactionEra<BlockNumber, Hash>,
 		genesis_hash: Hash,
-		nonce: Index,
+		nonce: Nonce,
 		tip: Balance,
 	) -> Self;
 
 	/// Return transaction nonce.
-	fn nonce(&self) -> Index;
+	fn nonce(&self) -> Nonce;
 
 	/// Return transaction tip.
 	fn tip(&self) -> Balance;
@@ -177,7 +177,7 @@ impl BridgeHubSignedExtension for SignedExtension {
 		transaction_version: u32,
 		era: bp_runtime::TransactionEra<BlockNumber, Hash>,
 		genesis_hash: Hash,
-		nonce: Index,
+		nonce: Nonce,
 		tip: Balance,
 	) -> Self {
 		GenericSignedExtension::new(
@@ -209,7 +209,7 @@ impl BridgeHubSignedExtension for SignedExtension {
 	}
 
 	/// Return transaction nonce.
-	fn nonce(&self) -> Index {
+	fn nonce(&self) -> Nonce {
 		self.payload.5 .0
 	}
 

bridges/primitives/chain-bridge-hub-kusama/src/lib.rs

@@ -43,7 +43,7 @@ impl Chain for BridgeHubKusama {
 
 	type AccountId = AccountId;
 	type Balance = Balance;
-	type Index = Index;
+	type Nonce = Nonce;
 	type Signature = Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/chain-bridge-hub-polkadot/src/lib.rs

@@ -39,7 +39,7 @@ impl Chain for BridgeHubPolkadot {
 
 	type AccountId = AccountId;
 	type Balance = Balance;
-	type Index = Index;
+	type Nonce = Nonce;
 	type Signature = Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/chain-bridge-hub-rococo/src/lib.rs

@@ -43,7 +43,7 @@ impl Chain for BridgeHubRococo {
 
 	type AccountId = AccountId;
 	type Balance = Balance;
-	type Index = Index;
+	type Nonce = Nonce;
 	type Signature = Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/chain-bridge-hub-wococo/src/lib.rs

@@ -39,7 +39,7 @@ impl Chain for BridgeHubWococo {
 
 	type AccountId = AccountId;
 	type Balance = Balance;
-	type Index = Index;
+	type Nonce = Nonce;
 	type Signature = Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/chain-kusama/src/lib.rs

@@ -35,7 +35,7 @@ impl Chain for Kusama {
 
 	type AccountId = <PolkadotLike as Chain>::AccountId;
 	type Balance = <PolkadotLike as Chain>::Balance;
-	type Index = <PolkadotLike as Chain>::Index;
+	type Nonce = <PolkadotLike as Chain>::Nonce;
 	type Signature = <PolkadotLike as Chain>::Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/chain-millau/Cargo.toml

@@ -11,10 +11,10 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 fixed-hash = { version = "0.8.0", default-features = false }
 hash256-std-hasher = { version = "0.15.2", default-features = false }
 impl-codec = { version = "0.6", default-features = false }
-impl-serde = { version = "0.4.0", optional = true }
+impl-serde = { version = "0.4.0", default-features = false }
 parity-util-mem = { version = "0.12.0", default-features = false, features = ["primitive-types"] }
 scale-info = { version = "2.9.0", default-features = false, features = ["derive"] }
-serde = { version = "1.0", optional = true, features = ["derive"] }
+serde = { version = "1.0", default-features = false, features = ["alloc", "derive"] }
 
 # Bridge Dependencies
 
@@ -46,10 +46,10 @@ std = [
 	"frame-system/std",
 	"hash256-std-hasher/std",
 	"impl-codec/std",
-	"impl-serde",
+	"impl-serde/std",
 	"parity-util-mem/std",
 	"scale-info/std",
-	"serde",
+	"serde/std",
 	"sp-api/std",
 	"sp-core/std",
 	"sp-io/std",

bridges/primitives/chain-millau/src/lib.rs

@@ -33,6 +33,7 @@ use frame_support::{
 };
 use frame_system::limits;
 use scale_info::TypeInfo;
+use serde::{Deserialize, Serialize};
 use sp_core::{storage::StateVersion, Hasher as HasherT};
 use sp_runtime::{
 	traits::{IdentifyAccount, Verify},
@@ -41,8 +42,6 @@ use sp_runtime::{
 use sp_std::prelude::*;
 use sp_trie::{LayoutV0, LayoutV1, TrieConfiguration};
 
-#[cfg(feature = "std")]
-use serde::{Deserialize, Serialize};
 use sp_runtime::traits::Keccak256;
 
 pub use millau_hash::MillauHash;
@@ -145,8 +144,8 @@ pub type AccountSigner = MultiSigner;
 /// Balance of an account.
 pub type Balance = u64;
 
-/// Index of a transaction in the chain.
-pub type Index = u32;
+/// Nonce of a transaction in the chain.
+pub type Nonce = u32;
 
 /// Weight-to-Fee type used by Millau.
 pub type WeightToFee = IdentityFee<Balance>;
@@ -163,7 +162,7 @@ impl Chain for Millau {
 
 	type AccountId = AccountId;
 	type Balance = Balance;
-	type Index = Index;
+	type Nonce = Nonce;
 	type Signature = Signature;
 
 	fn max_extrinsic_size() -> u32 {
@@ -197,8 +196,7 @@ impl ChainWithBeefy for Millau {
 }
 
 /// Millau Hasher (Blake2-256 ++ Keccak-256) implementation.
-#[derive(PartialEq, Eq, Clone, Copy, RuntimeDebug, TypeInfo)]
-#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]
+#[derive(PartialEq, Eq, Clone, Copy, RuntimeDebug, TypeInfo, Serialize, Deserialize)]
 pub struct BlakeTwoAndKeccak256;
 
 impl sp_core::Hasher for BlakeTwoAndKeccak256 {

bridges/primitives/chain-millau/src/millau_hash.rs

@@ -27,9 +27,7 @@ fixed_hash::construct_fixed_hash! {
 	pub struct MillauHash(64);
 }
 
-#[cfg(feature = "std")]
 impl_serde::impl_fixed_hash_serde!(MillauHash, 64);
-
 impl_codec::impl_fixed_hash_codec!(MillauHash, 64);
 
 impl CheckEqual for MillauHash {

bridges/primitives/chain-polkadot/src/lib.rs

@@ -35,7 +35,7 @@ impl Chain for Polkadot {
 
 	type AccountId = <PolkadotLike as Chain>::AccountId;
 	type Balance = <PolkadotLike as Chain>::Balance;
-	type Index = <PolkadotLike as Chain>::Index;
+	type Nonce = <PolkadotLike as Chain>::Nonce;
 	type Signature = <PolkadotLike as Chain>::Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/chain-rialto-parachain/src/lib.rs

@@ -96,8 +96,8 @@ pub type Balance = u128;
 /// An instant or duration in time.
 pub type Moment = u64;
 
-/// Index of a transaction in the parachain.
-pub type Index = u32;
+/// Nonce of a transaction in the parachain.
+pub type Nonce = u32;
 
 /// Weight-to-Fee type used by Rialto parachain.
 pub type WeightToFee = IdentityFee<Balance>;
@@ -114,7 +114,7 @@ impl Chain for RialtoParachain {
 
 	type AccountId = AccountId;
 	type Balance = Balance;
-	type Index = Index;
+	type Nonce = Nonce;
 	type Signature = Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/chain-rialto/src/lib.rs

@@ -149,8 +149,8 @@ pub type Balance = u128;
 /// An instant or duration in time.
 pub type Moment = u64;
 
-/// Index of a transaction in the chain.
-pub type Index = u32;
+/// Nonce of a transaction in the chain.
+pub type Nonce = u32;
 
 /// Weight-to-Fee type used by Rialto.
 pub type WeightToFee = IdentityFee<Balance>;
@@ -167,7 +167,7 @@ impl Chain for Rialto {
 
 	type AccountId = AccountId;
 	type Balance = Balance;
-	type Index = Index;
+	type Nonce = Nonce;
 	type Signature = Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/chain-rococo/src/lib.rs

@@ -35,7 +35,7 @@ impl Chain for Rococo {
 
 	type AccountId = <PolkadotLike as Chain>::AccountId;
 	type Balance = <PolkadotLike as Chain>::Balance;
-	type Index = <PolkadotLike as Chain>::Index;
+	type Nonce = <PolkadotLike as Chain>::Nonce;
 	type Signature = <PolkadotLike as Chain>::Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/chain-westend/src/lib.rs

@@ -35,7 +35,7 @@ impl Chain for Westend {
 
 	type AccountId = <PolkadotLike as Chain>::AccountId;
 	type Balance = <PolkadotLike as Chain>::Balance;
-	type Index = <PolkadotLike as Chain>::Index;
+	type Nonce = <PolkadotLike as Chain>::Nonce;
 	type Signature = <PolkadotLike as Chain>::Signature;
 
 	fn max_extrinsic_size() -> u32 {
@@ -70,7 +70,7 @@ impl Chain for Westmint {
 
 	type AccountId = AccountId;
 	type Balance = Balance;
-	type Index = Nonce;
+	type Nonce = Nonce;
 	type Signature = Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/chain-wococo/src/lib.rs

@@ -38,7 +38,7 @@ impl Chain for Wococo {
 
 	type AccountId = <PolkadotLike as Chain>::AccountId;
 	type Balance = <PolkadotLike as Chain>::Balance;
-	type Index = <PolkadotLike as Chain>::Index;
+	type Nonce = <PolkadotLike as Chain>::Nonce;
 	type Signature = <PolkadotLike as Chain>::Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/header-chain/src/justification.rs

@@ -56,7 +56,7 @@ impl<H: HeaderT> GrandpaJustification<H> {
 	/// any precise calculations - that's just an estimation.
 	pub fn max_reasonable_size<C>(required_precommits: u32) -> u32
 	where
-		C: Chain<Header = H> + ChainWithGrandpa,
+		C: Chain + ChainWithGrandpa,
 	{
 		// we don't need precise results here - just estimations, so some details
 		// are removed from computations (e.g. bytes required to encode vector length)
@@ -144,10 +144,7 @@ pub fn verify_and_optimize_justification<Header: HeaderT>(
 	authorities_set_id: SetId,
 	authorities_set: &VoterSet<AuthorityId>,
 	justification: &mut GrandpaJustification<Header>,
-) -> Result<(), Error>
-where
-	Header::Number: finality_grandpa::BlockNumberOps,
-{
+) -> Result<(), Error> {
 	let mut optimizer = OptimizationCallbacks {
 		extra_precommits: vec![],
 		redundant_votes_ancestries: Default::default(),
@@ -170,10 +167,7 @@ pub fn verify_justification<Header: HeaderT>(
 	authorities_set_id: SetId,
 	authorities_set: &VoterSet<AuthorityId>,
 	justification: &GrandpaJustification<Header>,
-) -> Result<(), Error>
-where
-	Header::Number: finality_grandpa::BlockNumberOps,
-{
+) -> Result<(), Error> {
 	verify_justification_with_callbacks(
 		finalized_target,
 		authorities_set_id,
@@ -295,10 +289,7 @@ fn verify_justification_with_callbacks<Header: HeaderT, C: VerificationCallbacks
 	authorities_set: &VoterSet<AuthorityId>,
 	justification: &GrandpaJustification<Header>,
 	callbacks: &mut C,
-) -> Result<(), Error>
-where
-	Header::Number: finality_grandpa::BlockNumberOps,
-{
+) -> Result<(), Error> {
 	// ensure that it is justification for the expected header
 	if (justification.commit.target_hash, justification.commit.target_number) != finalized_target {
 		return Err(Error::InvalidJustificationTarget)

bridges/primitives/header-chain/src/lib.rs

@@ -27,7 +27,6 @@ use codec::{Codec, Decode, Encode, EncodeLike, MaxEncodedLen};
 use core::{clone::Clone, cmp::Eq, default::Default, fmt::Debug};
 use frame_support::PalletError;
 use scale_info::TypeInfo;
-#[cfg(feature = "std")]
 use serde::{Deserialize, Serialize};
 use sp_consensus_grandpa::{AuthorityList, ConsensusLog, SetId, GRANDPA_ENGINE_ID};
 use sp_runtime::{traits::Header as HeaderT, Digest, RuntimeDebug};
@@ -110,8 +109,9 @@ impl AuthoritySet {
 /// Data required for initializing the GRANDPA bridge pallet.
 ///
 /// The bridge needs to know where to start its sync from, and this provides that initial context.
-#[derive(Default, Encode, Decode, RuntimeDebug, PartialEq, Eq, Clone, TypeInfo)]
-#[cfg_attr(feature = "std", derive(Serialize, Deserialize))]
+#[derive(
+	Default, Encode, Decode, RuntimeDebug, PartialEq, Eq, Clone, TypeInfo, Serialize, Deserialize,
+)]
 pub struct InitializationData<H: HeaderT> {
 	/// The header from which we should start syncing.
 	pub header: Box<H>,

bridges/primitives/header-chain/tests/implementation_match.rs

@@ -104,8 +104,8 @@ pub fn make_default_justification(header: &TestHeader) -> GrandpaJustification<T
 // the `finality_grandpa::validate_commit` function has two ways to report an unsuccessful
 // commit validation:
 //
-// 1) to return `Err()` (which only may happen if `finality_grandpa::Chain` implementation
-//    returns an error);
+// 1) to return `Err()` (which only may happen if `finality_grandpa::Chain` implementation returns
+//    an error);
 // 2) to return `Ok(validation_result)` if `validation_result.is_valid()` is false.
 //
 // Our implementation would just return error in both cases.

bridges/primitives/messages/src/lib.rs

@@ -30,6 +30,7 @@ use frame_support::{PalletError, RuntimeDebug};
 // Weight is reexported to avoid additional frame-support dependencies in related crates.
 pub use frame_support::weights::Weight;
 use scale_info::TypeInfo;
+use serde::{Deserialize, Serialize};
 use source_chain::RelayersRewards;
 use sp_core::TypeId;
 use sp_std::{collections::vec_deque::VecDeque, ops::RangeInclusive, prelude::*};
@@ -39,8 +40,19 @@ pub mod storage_keys;
 pub mod target_chain;
 
 /// Messages pallet operating mode.
-#[derive(Encode, Decode, Clone, Copy, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
-#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize))]
+#[derive(
+	Encode,
+	Decode,
+	Clone,
+	Copy,
+	PartialEq,
+	Eq,
+	RuntimeDebug,
+	TypeInfo,
+	MaxEncodedLen,
+	Serialize,
+	Deserialize,
+)]
 pub enum MessagesOperatingMode {
 	/// Basic operating mode (Normal/Halted)
 	Basic(BasicOperatingMode),

bridges/primitives/polkadot-core/src/lib.rs

@@ -181,9 +181,6 @@ pub type BlockNumber = u32;
 /// Hash type used in Polkadot-like chains.
 pub type Hash = <BlakeTwo256 as HasherT>::Out;
 
-/// Account Index (a.k.a. nonce).
-pub type Index = u32;
-
 /// Hashing type.
 pub type Hashing = BlakeTwo256;
 
@@ -205,7 +202,7 @@ pub type AccountId = <AccountPublic as IdentifyAccount>::AccountId;
 /// Address of account on Polkadot-like chains.
 pub type AccountAddress = MultiAddress<AccountId, ()>;
 
-/// Index of a transaction on the Polkadot-like chains.
+/// Nonce of a transaction on the Polkadot-like chains.
 pub type Nonce = u32;
 
 /// Block type of Polkadot-like chains.
@@ -236,7 +233,7 @@ impl Chain for PolkadotLike {
 
 	type AccountId = AccountId;
 	type Balance = Balance;
-	type Index = Index;
+	type Nonce = Nonce;
 	type Signature = Signature;
 
 	fn max_extrinsic_size() -> u32 {

bridges/primitives/runtime/src/chain.rs

@@ -170,8 +170,8 @@ pub trait Chain: Send + Sync + 'static {
 		+ Zero
 		+ TryFrom<sp_core::U256>
 		+ MaxEncodedLen;
-	/// Index of a transaction used by the chain.
-	type Index: Parameter
+	/// Nonce of a transaction used by the chain.
+	type Nonce: Parameter
 		+ Member
 		+ MaybeSerialize
 		+ Debug
@@ -206,7 +206,7 @@ where
 	type Header = <T::Chain as Chain>::Header;
 	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 {
@@ -261,8 +261,8 @@ pub type AccountIdOf<C> = <C as Chain>::AccountId;
 /// Balance type used by the chain.
 pub type BalanceOf<C> = <C as Chain>::Balance;
 
-/// Transaction index type used by the chain.
-pub type IndexOf<C> = <C as Chain>::Index;
+/// Transaction nonce type used by the chain.
+pub type NonceOf<C> = <C as Chain>::Nonce;
 
 /// Signature type used by the chain.
 pub type SignatureOf<C> = <C as Chain>::Signature;

bridges/primitives/runtime/src/lib.rs

@@ -25,13 +25,14 @@ use frame_support::{
 };
 use frame_system::RawOrigin;
 use scale_info::TypeInfo;
+use serde::{Deserialize, Serialize};
 use sp_core::storage::StorageKey;
 use sp_runtime::traits::{BadOrigin, Header as HeaderT, UniqueSaturatedInto};
 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;
@@ -373,8 +374,19 @@ pub trait OperatingMode: Send + Copy + Debug + FullCodec {
 }
 
 /// Basic operating modes for a bridges module (Normal/Halted).
-#[derive(Encode, Decode, Clone, Copy, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
-#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize))]
+#[derive(
+	Encode,
+	Decode,
+	Clone,
+	Copy,
+	PartialEq,
+	Eq,
+	RuntimeDebug,
+	TypeInfo,
+	MaxEncodedLen,
+	Serialize,
+	Deserialize,
+)]
 pub enum BasicOperatingMode {
 	/// Normal mode, when all operations are allowed.
 	Normal,

bridges/primitives/runtime/src/messages.rs

@@ -26,8 +26,8 @@ pub struct MessageDispatchResult<DispatchLevelResult> {
 	/// Unspent dispatch weight. This weight that will be deducted from total delivery transaction
 	/// weight, thus reducing the transaction cost. This shall not be zero in (at least) two cases:
 	///
-	/// 1) if message has been dispatched successfully, but post-dispatch weight is less than
-	///    the weight, declared by the message sender;
+	/// 1) if message has been dispatched successfully, but post-dispatch weight is less than the
+	///    weight, declared by the message sender;
 	/// 2) if message has not been dispatched at all.
 	pub unspent_weight: Weight,
 	/// Fine-grained result of single message dispatch (for better diagnostic purposes)