Rust 1.79 lints

beacon_node/beacon_chain/src/eth1_chain.rs

@@ -685,7 +685,7 @@ mod test {
     fn get_eth1_data(i: u64) -> Eth1Data {
         Eth1Data {
             block_hash: Hash256::from_low_u64_be(i),
-            deposit_root: Hash256::from_low_u64_be(u64::max_value() - i),
+            deposit_root: Hash256::from_low_u64_be(u64::MAX - i),
             deposit_count: i,
         }
     }

beacon_node/beacon_chain/src/validator_monitor.rs

@@ -2068,7 +2068,7 @@ pub fn timestamp_now() -> Duration {
 }
 
 fn u64_to_i64(n: impl Into<u64>) -> i64 {
-    i64::try_from(n.into()).unwrap_or(i64::max_value())
+    i64::try_from(n.into()).unwrap_or(i64::MAX)
 }
 
 /// Returns the delay between the start of `block.slot` and `seen_timestamp`.

beacon_node/client/src/notifier.rs

@@ -721,10 +721,10 @@ fn eth1_logging<T: BeaconChainTypes>(beacon_chain: &BeaconChain<T>, log: &Logger
     }
 }
 
-/// Returns the peer count, returning something helpful if it's `usize::max_value` (effectively a
+/// Returns the peer count, returning something helpful if it's `usize::MAX` (effectively a
 /// `None` value).
 fn peer_count_pretty(peer_count: usize) -> String {
-    if peer_count == usize::max_value() {
+    if peer_count == usize::MAX {
         String::from("--")
     } else {
         format!("{}", peer_count)
@@ -824,7 +824,7 @@ impl Speedo {
 
     /// Returns the average of the speeds between each observation.
     ///
-    /// Does not gracefully handle slots that are above `u32::max_value()`.
+    /// Does not gracefully handle slots that are above `u32::MAX`.
     pub fn slots_per_second(&self) -> Option<f64> {
         let speeds = self
             .0

beacon_node/eth1/src/service.rs

@@ -853,7 +853,7 @@ impl Service {
         let max_log_requests_per_update = self
             .config()
             .max_log_requests_per_update
-            .unwrap_or_else(usize::max_value);
+            .unwrap_or(usize::MAX);
 
         let range = {
             match new_block_numbers {
@@ -996,10 +996,7 @@ impl Service {
     ) -> Result<BlockCacheUpdateOutcome, Error> {
         let client = self.client();
         let block_cache_truncation = self.config().block_cache_truncation;
-        let max_blocks_per_update = self
-            .config()
-            .max_blocks_per_update
-            .unwrap_or_else(usize::max_value);
+        let max_blocks_per_update = self.config().max_blocks_per_update.unwrap_or(usize::MAX);
 
         let range = {
             match new_block_numbers {
@@ -1025,7 +1022,7 @@ impl Service {
                 let range_size = range.end() - range.start();
                 let max_size = block_cache_truncation
                     .map(|n| n as u64)
-                    .unwrap_or_else(u64::max_value);
+                    .unwrap_or_else(|| u64::MAX);
                 if range_size > max_size {
                     // If the range of required blocks is larger than `max_size`, drop all
                     // existing blocks and download `max_size` count of blocks.

beacon_node/execution_layer/src/engine_api/http.rs

@@ -412,7 +412,7 @@ pub mod deposit_methods {
                     .ok_or("Block number was not string")?,
             )?;
 
-            if number <= usize::max_value() as u64 {
+            if number <= usize::MAX as u64 {
                 Ok(Block {
                     hash,
                     timestamp,

beacon_node/execution_layer/src/lib.rs

@@ -2178,7 +2178,7 @@ fn verify_builder_bid<E: EthSpec>(
 
     // Avoid logging values that we can't represent with our Prometheus library.
     let payload_value_gwei = bid.data.message.value() / 1_000_000_000;
-    if payload_value_gwei <= Uint256::from(i64::max_value()) {
+    if payload_value_gwei <= Uint256::from(i64::MAX) {
         metrics::set_gauge_vec(
             &metrics::EXECUTION_LAYER_PAYLOAD_BIDS,
             &[metrics::BUILDER],

beacon_node/execution_layer/src/metrics.rs

@@ -81,7 +81,7 @@ lazy_static::lazy_static! {
     );
     pub static ref EXECUTION_LAYER_PAYLOAD_BIDS: Result<IntGaugeVec> = try_create_int_gauge_vec(
         "execution_layer_payload_bids",
-        "The gwei bid value of payloads received by local EEs or builders. Only shows values up to i64::max_value.",
+        "The gwei bid value of payloads received by local EEs or builders. Only shows values up to i64::MAX.",
         &["source"]
     );
 }

beacon_node/http_api/tests/tests.rs

@@ -2266,9 +2266,9 @@ impl ApiTester {
             vec![validator_count],
             vec![validator_count, 1],
             vec![validator_count, 1, 3],
-            vec![u64::max_value()],
-            vec![u64::max_value(), 1],
-            vec![u64::max_value(), 1, 3],
+            vec![u64::MAX],
+            vec![u64::MAX, 1],
+            vec![u64::MAX, 1, 3],
         ];
 
         interesting.push((0..validator_count).collect());

beacon_node/lighthouse_network/src/discovery/mod.rs

@@ -561,8 +561,8 @@ impl<E: EthSpec> Discovery<E> {
     /// Updates the `eth2` field of our local ENR.
     pub fn update_eth2_enr(&mut self, enr_fork_id: EnrForkId) {
         // to avoid having a reference to the spec constant, for the logging we assume
-        // FAR_FUTURE_EPOCH is u64::max_value()
-        let next_fork_epoch_log = if enr_fork_id.next_fork_epoch == u64::max_value() {
+        // FAR_FUTURE_EPOCH is u64::MAX
+        let next_fork_epoch_log = if enr_fork_id.next_fork_epoch == u64::MAX {
             String::from("No other fork")
         } else {
             format!("{:?}", enr_fork_id.next_fork_epoch)

beacon_node/network/src/network_beacon_processor/tests.rs

@@ -793,9 +793,7 @@ async fn aggregate_attestation_to_unknown_block(import_method: BlockImportMethod
     let mut rig = TestRig::new(SMALL_CHAIN).await;
 
     // Empty the op pool.
-    rig.chain
-        .op_pool
-        .prune_attestations(u64::max_value().into());
+    rig.chain.op_pool.prune_attestations(u64::MAX.into());
     assert_eq!(rig.chain.op_pool.num_attestations(), 0);
 
     // Send the attestation but not the block, and check that it was not imported.

beacon_node/operation_pool/src/lib.rs

@@ -602,7 +602,7 @@ impl<E: EthSpec> OperationPool<E> {
                         })
             },
             |address_change| address_change.as_inner().clone(),
-            usize::max_value(),
+            usize::MAX,
         );
         changes.shuffle(&mut thread_rng());
         changes
@@ -1343,7 +1343,7 @@ mod release_tests {
         // Set of indices covered by previous attestations in `best_attestations`.
         let mut seen_indices = BTreeSet::<u64>::new();
         // Used for asserting that rewards are in decreasing order.
-        let mut prev_reward = u64::max_value();
+        let mut prev_reward = u64::MAX;
 
         let mut reward_cache = RewardCache::default();
         reward_cache.update(&state).unwrap();

common/deposit_contract/src/lib.rs

@@ -96,7 +96,7 @@ mod tests {
         let mut deposit_data = DepositData {
             pubkey: keypair.pk.into(),
             withdrawal_credentials: Hash256::from_slice(&[42; 32]),
-            amount: u64::max_value(),
+            amount: u64::MAX,
             signature: Signature::empty().into(),
         };
         deposit_data.signature = deposit_data.create_signature(&keypair.sk, spec);

consensus/proto_array/src/fork_choice_test_definition.rs

@@ -285,17 +285,17 @@ impl ForkChoiceTestDefinition {
     }
 }
 
-/// Gives a root that is not the zero hash (unless i is `usize::max_value)`.
+/// Gives a root that is not the zero hash (unless i is `usize::MAX)`.
 fn get_root(i: u64) -> Hash256 {
     Hash256::from_low_u64_be(i + 1)
 }
 
-/// Gives a hash that is not the zero hash (unless i is `usize::max_value)`.
+/// Gives a hash that is not the zero hash (unless i is `usize::MAX)`.
 fn get_hash(i: u64) -> ExecutionBlockHash {
     ExecutionBlockHash::from_root(get_root(i))
 }
 
-/// Gives a checkpoint with a root that is not the zero hash (unless i is `usize::max_value)`.
+/// Gives a checkpoint with a root that is not the zero hash (unless i is `usize::MAX)`.
 /// `Epoch` will always equal `i`.
 fn get_checkpoint(i: u64) -> Checkpoint {
     Checkpoint {

consensus/proto_array/src/fork_choice_test_definition/votes.rs

@@ -738,7 +738,7 @@ pub fn get_votes_test_definition() -> ForkChoiceTestDefinition {
     // Ensure that pruning below the prune threshold does not prune.
     ops.push(Operation::Prune {
         finalized_root: get_root(5),
-        prune_threshold: usize::max_value(),
+        prune_threshold: usize::MAX,
         expected_len: 11,
     });
 

consensus/proto_array/src/proto_array_fork_choice.rs

@@ -995,7 +995,7 @@ mod test_compute_deltas {
     use super::*;
     use types::MainnetEthSpec;
 
-    /// Gives a hash that is not the zero hash (unless i is `usize::max_value)`.
+    /// Gives a hash that is not the zero hash (unless i is `usize::MAX)`.
     fn hash_from_index(i: usize) -> Hash256 {
         Hash256::from_low_u64_be(i as u64 + 1)
     }

consensus/safe_arith/src/lib.rs

@@ -155,12 +155,12 @@ mod test {
 
     #[test]
     fn errors() {
-        assert!(u32::max_value().safe_add(1).is_err());
-        assert!(u32::min_value().safe_sub(1).is_err());
-        assert!(u32::max_value().safe_mul(2).is_err());
-        assert!(u32::max_value().safe_div(0).is_err());
-        assert!(u32::max_value().safe_rem(0).is_err());
-        assert!(u32::max_value().safe_shl(32).is_err());
-        assert!(u32::max_value().safe_shr(32).is_err());
+        assert!(u32::MAX.safe_add(1).is_err());
+        assert!(u32::MIN.safe_sub(1).is_err());
+        assert!(u32::MAX.safe_mul(2).is_err());
+        assert!(u32::MAX.safe_div(0).is_err());
+        assert!(u32::MAX.safe_rem(0).is_err());
+        assert!(u32::MAX.safe_shl(32).is_err());
+        assert!(u32::MAX.safe_shr(32).is_err());
     }
 }

consensus/state_processing/src/per_epoch_processing/base/validator_statuses.rs

@@ -30,7 +30,7 @@ impl Default for InclusionInfo {
     /// Defaults to `delay` at its maximum value and `proposer_index` at zero.
     fn default() -> Self {
         Self {
-            delay: u64::max_value(),
+            delay: u64::MAX,
             proposer_index: 0,
         }
     }

consensus/swap_or_not_shuffle/src/compute_shuffled_index.rs

@@ -17,7 +17,7 @@ use std::cmp::max;
 ///  - `list_size == 0`
 ///  - `index >= list_size`
 ///  - `list_size > 2**24`
-///  - `list_size > usize::max_value() / 2`
+///  - `list_size > usize::MAX / 2`
 pub fn compute_shuffled_index(
     index: usize,
     list_size: usize,
@@ -26,7 +26,7 @@ pub fn compute_shuffled_index(
 ) -> Option<usize> {
     if list_size == 0
         || index >= list_size
-        || list_size > usize::max_value() / 2
+        || list_size > usize::MAX / 2
         || list_size > 2_usize.pow(24)
     {
         return None;
@@ -140,7 +140,7 @@ mod tests {
     fn returns_none_for_too_large_list() {
         assert_eq!(
             None,
-            compute_shuffled_index(100, usize::max_value() / 2, &[42, 42], 90)
+            compute_shuffled_index(100, usize::MAX / 2, &[42, 42], 90)
         );
     }
 }

consensus/swap_or_not_shuffle/src/shuffle_list.rs

@@ -75,7 +75,7 @@ impl Buf {
 /// Returns `None` under any of the following conditions:
 ///  - `list_size == 0`
 ///  - `list_size > 2**24`
-///  - `list_size > usize::max_value() / 2`
+///  - `list_size > usize::MAX / 2`
 pub fn shuffle_list(
     mut input: Vec<usize>,
     rounds: u8,
@@ -84,10 +84,7 @@ pub fn shuffle_list(
 ) -> Option<Vec<usize>> {
     let list_size = input.len();
 
-    if input.is_empty()
-        || list_size > usize::max_value() / 2
-        || list_size > 2_usize.pow(24)
-        || rounds == 0
+    if input.is_empty() || list_size > usize::MAX / 2 || list_size > 2_usize.pow(24) || rounds == 0
     {
         return None;
     }

consensus/types/benches/benches.rs

@@ -36,8 +36,8 @@ fn get_state<E: EthSpec>(validator_count: usize) -> BeaconState<E> {
                 slashed: false,
                 activation_eligibility_epoch: Epoch::new(0),
                 activation_epoch: Epoch::new(0),
-                exit_epoch: Epoch::from(u64::max_value()),
-                withdrawable_epoch: Epoch::from(u64::max_value()),
+                exit_epoch: Epoch::from(u64::MAX),
+                withdrawable_epoch: Epoch::from(u64::MAX),
             })
             .collect(),
     )

consensus/types/src/beacon_state/committee_cache.rs

@@ -86,7 +86,7 @@ impl CommitteeCache {
         }
 
         // The use of `NonZeroUsize` reduces the maximum number of possible validators by one.
-        if state.validators().len() == usize::max_value() {
+        if state.validators().len() == usize::MAX {
             return Err(Error::TooManyValidators);
         }
 

consensus/types/src/slot_epoch.rs

@@ -70,7 +70,7 @@ impl Slot {
     }
 
     pub fn max_value() -> Slot {
-        Slot(u64::max_value())
+        Slot(u64::MAX)
     }
 }
 
@@ -80,7 +80,7 @@ impl Epoch {
     }
 
     pub fn max_value() -> Epoch {
-        Epoch(u64::max_value())
+        Epoch(u64::MAX)
     }
 
     /// The first slot in the epoch.
@@ -176,10 +176,10 @@ mod epoch_tests {
         let slots_per_epoch = 32;
 
         // The last epoch which can be represented by u64.
-        let epoch = Epoch::new(u64::max_value() / slots_per_epoch);
+        let epoch = Epoch::new(u64::MAX / slots_per_epoch);
 
         // A slot number on the epoch should be equal to u64::max_value.
-        assert_eq!(epoch.end_slot(slots_per_epoch), Slot::new(u64::max_value()));
+        assert_eq!(epoch.end_slot(slots_per_epoch), Slot::new(u64::MAX));
     }
 
     #[test]