* Store dht enrs on shutdown
* Load enrs on startup and add tests
* Remove enr_entries from behavior
* Move all dht persisting logic to `NetworkService`
* Move `PersistedDht` from eth2-libp2p to network crate
* Add test to confirm dht persistence
* Add logging
* Remove extra call to beacon_chain persist
* Expose only mutable `add_enr` method from behaviour
* Fix tests
* Fix merge errors
* Add TimeoutRwLock to BeaconChain
* Update network crate
* Update rest api
* Fix beacon chain tests
* Fix rest api tests
* Set test back to !debug_assertions
* Create libp2p instance
* Change logger to stdlog
* test_connection initial commit
* Add gossipsub test
* Delete tests in network crate
* Add test module
* Clean tests
* Remove dependency on discovery
* Working publish between 2 nodes
TODO: Publish should be called just once
* Working 2 peer gossipsub test with additional events
* Cleanup test
* Add rpc test
* Star topology discovery WIP
* build_nodes builds and connects n nodes. Increase nodes in gossipsub test
* Add unsubscribe method and expose reference to gossipsub object for gossipsub tests
* Add gossipsub message forwarding test
* Fix gossipsub forward test
* Test improvements
* Remove discovery tests
* Simplify gossipsub forward test topology
* Add helper functions for topology building
* Clean up tests
* Update naming to new network spec
* Correct ssz encoding of protocol names
* Further additions to network upgrade
* Initial network spec update WIP
* Temp commit
* Builds one side of the streamed RPC responses
* Temporary commit
* Propagates streaming changes up into message handler
* Intermediate network update
* Partial update in upgrading to the new network spec
* Update dependencies, remove redundant deps
* Correct sync manager for block stream handling
* Re-write of RPC handler, improves efficiency and corrects bugs
* Stream termination update
* Completed refactor of rpc handler
* Remove crates
* Correct compile issues associated with test merge
* Build basic tests and testing structure for eth2-libp2p
* Enhance RPC tests and add logging
* Complete RPC testing framework and STATUS test
* Decoding bug fixes, log improvements, stream test
* Clean up RPC handler logging
* Decoder bug fix, empty block stream test
* Add BlocksByRoot RPC test
* Add Goodbye RPC test
* Syncing and stream handling bug fixes and performance improvements
* Applies discv5 bug fixes
* Adds DHT IP filtering for lighthouse - currently disabled
* Adds randomized network propagation as a CLI arg
* Add disconnect functionality
* Adds attestation handling and parent lookup
* Adds RPC error handling for the sync manager
* Allow parent's blocks to be already processed
* Update github workflow
* Adds reviewer suggestions
* Implement freezer database for state vectors
* Improve BeaconState safe accessors
And fix a bug in the compact committees accessor.
* Banish dodgy type bounds back to gRPC
* Clean up
* Switch to exclusive end points in chunked vec
* Cleaning up and start of tests
* Randao fix, more tests
* Fix unsightly hack
* Resolve test FIXMEs
* Config file support
* More clean-ups, migrator beginnings
* Finish migrator, integrate into BeaconChain
* Fixups
* Fix store tests
* Fix BeaconChain tests
* Fix LMD GHOST tests
* Address review comments, delete 'static bounds
* Cargo format
* Address review comments
* Fix LMD ghost tests
* Update to spec v0.9.0
* Update to v0.9.1
* Bump spec tags for v0.9.1
* Formatting, fix CI failures
* Resolve accidental KeyPair merge conflict
* Document new BeaconState functions
* Fix incorrect cache drops in `advance_caches`
* Update fork choice for v0.9.1
* Clean up some FIXMEs
* Fix a few docs/logs
* Update for new builder paradigm, spec changes
* Freezer DB integration into BeaconNode
* Cleaning up
* This works, clean it up
* Cleanups
* Fix and improve store tests
* Refine store test
* Delete unused beacon_chain_builder.rs
* Fix CLI
* Store state at split slot in hot database
* Make fork choice lookup fast again
* Store freezer DB split slot in the database
* Handle potential div by 0 in chunked_vector
* Exclude committee caches from freezer DB
* Remove FIXME about long-running test
* Refactor to cache Eth1Data
* Fix merge conflicts and minor refactorings
* Rename Eth1Cache to Eth1DataCache
* Refactor events subscription
* Add deposits module to interface with BeaconChain deposits
* Remove utils
* Rename to types.rs and add trait constraints to Eth1DataFetcher
* Confirm to trait constraints. Make Web3DataFetcher cloneable
* Make fetcher object member of deposit and eth1_data cache and other fixes
* Fix update_cache function
* Move fetch_eth1_data to impl block
* Fix deposit tests
* Create Eth1 object for interfacing with Beacon chain
* Add `run` function for running update_cache and subscribe_deposit_logs tasks
* Add logging
* Run `cargo fmt` and make tests pass
* Convert sync functions to async
* Add timeouts to web3 functions
* Return futures from cache functions
* Add failed chaining of futures
* Working cache updation
* Clean up tests and `update_cache` function
* Refactor `get_eth1_data` functions to work with future returning functions
* Refactor eth1 `run` function to work with modified `update_cache` api
* Minor changes
* Add distance parameter to `update_cache`
* Fix tests and other minor fixes
* Working integration with cache and deposits
* Add merkle_tree construction, proof generation and verification code
* Add function to construct and fetch Deposits for BeaconNode
* Add error handling
* Import ssz
* Add error handling to eth1 cache and fix minor errors
* Run rustfmt
* Fix minor bug
* Rename Eth1Error and change to Result<T>
* Change deposit fetching mechanism from notification based to poll based
* Add deposits from eth1 chain in a given range every `x` blocks
* Modify `run` function to accommodate changes
* Minor fixes
* Fix formatting
* Initial commit. web3 api working.
* Tidied up lib. Add function for fetching logs.
* Refactor with `Eth1DataFetcher` trait
* Add parsing for deposit contract logs and get_eth1_data function
* Add `get_eth1_votes` function
* Refactor to cache Eth1Data
* Fix merge conflicts and minor refactorings
* Rename Eth1Cache to Eth1DataCache
* Refactor events subscription
* Add deposits module to interface with BeaconChain deposits
* Remove utils
* Rename to types.rs and add trait constraints to Eth1DataFetcher
* Confirm to trait constraints. Make Web3DataFetcher cloneable
* Make fetcher object member of deposit and eth1_data cache and other fixes
* Fix update_cache function
* Move fetch_eth1_data to impl block
* Fix deposit tests
* Create Eth1 object for interfacing with Beacon chain
* Add `run` function for running update_cache and subscribe_deposit_logs tasks
* Add logging
* Run `cargo fmt` and make tests pass
* Convert sync functions to async
* Add timeouts to web3 functions
* Return futures from cache functions
* Add failed chaining of futures
* Working cache updation
* Clean up tests and `update_cache` function
* Refactor `get_eth1_data` functions to work with future returning functions
* Refactor eth1 `run` function to work with modified `update_cache` api
* Minor changes
* Add distance parameter to `update_cache`
* Fix tests and other minor fixes
* Working integration with cache and deposits
* Add merkle_tree construction, proof generation and verification code
* Add function to construct and fetch Deposits for BeaconNode
* Add error handling
* Import ssz
* Add error handling to eth1 cache and fix minor errors
* Run rustfmt
* Fix minor bug
* Rename Eth1Error and change to Result<T>
* Change deposit fetching mechanism from notification based to poll based
* Add deposits from eth1 chain in a given range every `x` blocks
* Modify `run` function to accommodate changes
* Minor fixes
* Fix formatting
* Fix merge issue
* Refactor with `Config` struct. Remote `ContractConfig`
* Rename eth1_chain crate to eth1
* Rename files and read abi file using `fs::read`
* Move eth1 to lib
* Remove unnecessary mutability constraint
* Add `Web3Backend` for returning actual eth1 data
* Refactor `get_eth1_votes` to return a Result
* Delete `eth1_chain` crate
* Return `Result` from `get_deposits`
* Fix range of deposits to return to beacon chain
* Add `get_block_height_by_hash` trait function
* Add naive method for getting `previous_eth1_distance`
* Add eth1 config params to main config
* Add instructions for setting up eth1 testing environment
* Add build script to fetch deposit contract abi
* Contract ABI is part of compiled binary
* Fix minor bugs
* Move docs to lib
* Add timeout to config
* Remove print statements
* Change warn to error
* Fix typos
* Removed prints in test and get timeout value from config
* Fixed error types
* Added logging to web3_fetcher
* Refactor for modified web3 api
* Fix minor stuff
* Add build script
* Tidy, hide eth1 integration tests behind flag
* Add http crate
* Add first stages of eth1_test_rig
* Fix deposits on test rig
* Fix bug with deposit count method
* Add block hash getter to http eth1
* Clean eth1 http crate and tests
* Add script to start ganache
* Adds deposit tree to eth1-http
* Extend deposit tree tests
* Tidy tests in eth1-http
* Add more detail to get block request
* Add block cache to eth1-http
* Rename deposit tree to deposit cache
* Add inital updating to eth1-http
* Tidy updater
* Fix compile bugs in tests
* Adds an Eth1DataCache builder
* Reorg eth1-http files
* Add (failing) tests for eth1 updater
* Rename files, fix bug in eth1-http
* Ensure that ganache timestamps are increasing
* Fix bugs with getting eth1data ancestors
* Improve eth1 testing, fix bugs
* Add truncate method to block cache
* Add pruning to block cache update process
* Add tests for block pruning
* Allow for dropping an expired cache.
* Add more comments
* Add first compiling version of deposit updater
* Add common fn for getting range of required blocks
* Add passing deposit update test
* Improve tests
* Fix block pruning bug
* Add tests for running two updates at once
* Add updater services to eth1
* Add deposit collection to beacon chain
* Add incomplete builder experiments
* Add first working version of beacon chain builder
* Update test harness to new beacon chain type
* Rename builder file, tidy
* Add first working client builder
* Progress further on client builder
* Update becaon node binary to use client builder
* Ensure release tests compile
* Remove old eth1 crate
* Add first pass of new lighthouse binary
* Fix websocket server startup
* Remove old binary code from beacon_node crate
* Add first working beacon node tests
* Add genesis crate, new eth1 cache_2
* Add Serivce to Eth1Cache
* Refactor with general eth1 improvements
* Add passing genesis test
* Tidy, add comments
* Add more comments to eth1 service
* Add further eth1 progress
* Fix some bugs with genesis
* Fix eth1 bugs, make eth1 linking more efficient
* Shift logic in genesis service
* Add more comments to genesis service
* Add gzip, max request values, timeouts to http
* Update testnet parameters to suit goerli testnet
* Add ability to vary Fork, fix custom spec
* Be more explicit about deposit fork version
* Start adding beacon chain eth1 option
* Add more flexibility to prod client
* Further runtime refactoring
* Allow for starting from store
* Add bootstrapping to client config
* Add remote_beacon_node crate
* Update eth1 service for more configurability
* Update eth1 tests to use less runtimes
* Patch issues with tests using too many files
* Move dummy eth1 backend flag
* Ensure all tests pass
* Add ganache-cli to Dockerfile
* Use a special docker hub image for testing
* Appease clippy
* Move validator client into lighthouse binary
* Allow starting with dummy eth1 backend
* Improve logging
* Fix dummy eth1 backend from cli
* Add extra testnet command
* Ensure consistent spec in beacon node
* Update eth1 rig to work on goerli
* Tidy lcli, start adding support for yaml config
* Add incomplete YamlConfig struct
* Remove efforts at YamlConfig
* Add incomplete eth1 voting. Blocked on spec issues
* Add (untested) first pass at eth1 vote algo
* Add tests for winning vote
* Add more tests for eth1 chain
* Add more eth1 voting tests
* Added more eth1 voting testing
* Change test name
* Add more tests to eth1 chain
* Tidy eth1 generics, add more tests
* Improve comments
* Tidy beacon_node tests
* Tidy, rename JsonRpc.. to Caching..
* Tidy voting logic
* Tidy builder docs
* Add comments, tidy eth1
* Add more comments to eth1
* Fix bug with winning_vote
* Add doc comments to the `ClientBuilder`
* Remove commented-out code
* Improve `ClientBuilder` docs
* Add comments to client config
* Add decoding test for `ClientConfig`
* Remove unused `DepositSet` struct
* Tidy `block_cache`
* Remove commented out lines
* Remove unused code in `eth1` crate
* Remove old validator binary `main.rs`
* Tidy, fix tests compile error
* Add initial tests for get_deposits
* Remove dead code in eth1_test_rig
* Update TestingDepositBuilder
* Add testing for getting eth1 deposits
* Fix duplicate rand dep
* Remove dead code
* Remove accidentally-added files
* Fix comment in eth1_genesis_service
* Add .gitignore for eth1_test_rig
* Fix bug in eth1_genesis_service
* Remove dead code from eth2_config
* Fix tabs/spaces in root Cargo.toml
* Tidy eth1 crate
* Allow for re-use of eth1 service after genesis
* Update docs for new CLI
* Change README gif
* Tidy eth1 http module
* Tidy eth1 service
* Tidy environment crate
* Remove unused file
* Tidy, add comments
* Remove commented-out code
* Address majority of Michael's comments
* Address other PR comments
* Add link to issue alongside TODO
Updates lighthouse to the latest networking spec
- Sync re-write (#496)
- Updates to the latest eth2 networking spec (#495)
- Libp2p updates and improvements
* Renamed fork_choice::process_attestation_from_block
* Processing attestation in fork choice
* Retrieving state from store and checking signature
* Looser check on beacon state validity.
* Cleaned up get_attestation_state
* Expanded fork choice api to provide latest validator message.
* Checking if the an attestation contains a latest message
* Correct process_attestation error handling.
* Copy paste error in comment fixed.
* Tidy ancestor iterators
* Getting attestation slot via helper method
* Refactored attestation creation in test utils
* Revert "Refactored attestation creation in test utils"
This reverts commit 4d277fe4239a7194758b18fb5c00dfe0b8231306.
* Integration tests for free attestation processing
* Implicit conflicts resolved.
* formatting
* Do first pass on Grants code
* Add another attestation processing test
* Tidy attestation processing
* Remove old code fragment
* Add non-compiling half finished changes
* Simplify, fix bugs, add tests for chain iters
* Remove attestation processing from op pool
* Fix bug with fork choice, tidy
* Fix overly restrictive check in fork choice.
* Ensure committee cache is build during attn proc
* Ignore unknown blocks at fork choice
* Various minor fixes
* Make fork choice write lock in to read lock
* Remove unused method
* Tidy comments
* Fix attestation prod. target roots change
* Fix compile error in store iters
* Reject any attestation prior to finalization
* Begin metrics refactor
* Move beacon_chain to new metrics structure.
* Make metrics not panic if already defined
* Use global prometheus gather at rest api
* Unify common metric fns into a crate
* Add heavy metering to block processing
* Remove hypen from prometheus metric name
* Add more beacon chain metrics
* Add beacon chain persistence metric
* Prune op pool on finalization
* Add extra prom beacon chain metrics
* Prefix BeaconChain metrics with "beacon_"
* Add more store metrics
* Add basic metrics to libp2p
* Add metrics to HTTP server
* Remove old `http_server` crate
* Update metrics names to be more like standard
* Fix broken beacon chain metrics, add slot clock metrics
* Add lighthouse_metrics gather fn
* Remove http args
* Fix wrong state given to op pool prune
* Make prom metric names more consistent
* Add more metrics, tidy existing metrics
* Fix store block read metrics
* Tidy attestation metrics
* Fix minor PR comments
* Fix minor PR comments
* Remove duplicated attestation finalization check
* Remove awkward `let` statement
* Add first attempts at HTTP bootstrap
* Add beacon_block methods to rest api
* Fix serde for block.body.grafitti
* Allow travis failures on beta (see desc)
There's a non-backward compatible change in `cargo fmt`. Stable and beta
do not agree.
* Add network routes to API
* Fix rustc warnings
* Add best_slot method
* Add --bootstrap arg to beacon node
* Get bootstrapper working for ENR address
* Store intermediate states during block processing
* Allow bootstrapper to scrape libp2p address
* Update bootstrapper libp2p address finding
* Add comments
* Tidy API to be more consistent with recent decisions
* Address some review comments
* Make BeaconChainTypes Send + Sync + 'static
* Add `/network/listen_port` API endpoint
* Abandon starting the node if libp2p doesn't start
* Update bootstrapper for API changes
* Remove unnecessary trait bounds
* Renamed fork_choice::process_attestation_from_block
* Processing attestation in fork choice
* Retrieving state from store and checking signature
* Looser check on beacon state validity.
* Cleaned up get_attestation_state
* Expanded fork choice api to provide latest validator message.
* Checking if the an attestation contains a latest message
* Correct process_attestation error handling.
* Copy paste error in comment fixed.
* Tidy ancestor iterators
* Getting attestation slot via helper method
* Refactored attestation creation in test utils
* Revert "Refactored attestation creation in test utils"
This reverts commit 4d277fe4239a7194758b18fb5c00dfe0b8231306.
* Integration tests for free attestation processing
* Implicit conflicts resolved.
* formatting
* Do first pass on Grants code
* Add another attestation processing test
* Tidy attestation processing
* Remove old code fragment
* Add non-compiling half finished changes
* Simplify, fix bugs, add tests for chain iters
* Remove attestation processing from op pool
* Fix bug with fork choice, tidy
* Fix overly restrictive check in fork choice.
* Ensure committee cache is build during attn proc
* Ignore unknown blocks at fork choice
* Various minor fixes
* Make fork choice write lock in to read lock
* Remove unused method
* Tidy comments
* Fix attestation prod. target roots change
* Fix compile error in store iters
* Reject any attestation prior to finalization
* Fix minor PR comments
* Remove duplicated attestation finalization check
* Remove awkward `let` statement
* Rename `hashing` crate to `eth2_hashing`
* Add license, desc to eth2_hashing Cargo.toml
* Remove merkle root from eth2 hashing
* Remove old benches folder (zombied from old branch)
* Add docs to eth2_hashing
* Prepare tree_hash for publishing on crates.io
* Update deps to use crates.io instead of paths
* Update all crates to pull ssz from crates.io
* Remove cached_tree_hash, add patches to manifest
* Fix compile error in benches
* Remove unused code
* Fix fake_crypto compile error
* types: first updates for v0.8
* state_processing: epoch processing v0.8.0
* state_processing: block processing v0.8.0
* tree_hash_derive: support generics in SignedRoot
* types v0.8: update to use ssz_types
* state_processing v0.8: use ssz_types
* ssz_types: add bitwise methods and from_elem
* types: fix v0.8 FIXMEs
* ssz_types: add bitfield shift_up
* ssz_types: iterators and DerefMut for VariableList
* types,state_processing: use VariableList
* ssz_types: fix BitVector Decode impl
Fixed a typo in the implementation of ssz::Decode for BitVector, which caused it
to be considered variable length!
* types: fix test modules for v0.8 update
* types: remove slow type-level arithmetic
* state_processing: fix tests for v0.8
* op_pool: update for v0.8
* ssz_types: Bitfield difference length-independent
Allow computing the difference of two bitfields of different lengths.
* Implement compact committee support
* epoch_processing: committee & active index roots
* state_processing: genesis state builder v0.8
* state_processing: implement v0.8.1
* Further improve tree_hash
* Strip examples, tests from cached_tree_hash
* Update TreeHash, un-impl CachedTreeHash
* Update bitfield TreeHash, un-impl CachedTreeHash
* Update FixedLenVec TreeHash, unimpl CachedTreeHash
* Update update tree_hash_derive for new TreeHash
* Fix TreeHash, un-impl CachedTreeHash for ssz_types
* Remove fixed_len_vec, ssz benches
SSZ benches relied upon fixed_len_vec -- it is easier to just delete
them and rebuild them later (when necessary)
* Remove boolean_bitfield crate
* Fix fake_crypto BLS compile errors
* Update ef_tests for new v.8 type params
* Update ef_tests submodule to v0.8.1 tag
* Make fixes to support parsing ssz ef_tests
* `compact_committee...` to `compact_committees...`
* Derive more traits for `CompactCommittee`
* Flip bitfield byte-endianness
* Fix tree_hash for bitfields
* Modify CLI output for ef_tests
* Bump ssz crate version
* Update ssz_types doc comment
* Del cached tree hash tests from ssz_static tests
* Tidy SSZ dependencies
* Rename ssz_types crate to eth2_ssz_types
* validator_client: update for v0.8
* ssz_types: update union/difference for bit order swap
* beacon_node: update for v0.8, EthSpec
* types: disable cached tree hash, update min spec
* state_processing: fix slot bug in committee update
* tests: temporarily disable fork choice harness test
See #447
* committee cache: prevent out-of-bounds access
In the case where we tried to access the committee of a shard that didn't have a committee in the
current epoch, we were accessing elements beyond the end of the shuffling vector and panicking! This
commit adds a check to make the failure safe and explicit.
* fix bug in get_indexed_attestation and simplify
There was a bug in our implementation of get_indexed_attestation whereby
incorrect "committee indices" were used to index into the custody bitfield. The
bug was only observable in the case where some bits of the custody bitfield were
set to 1. The implementation has been simplified to remove the bug, and a test
added.
* state_proc: workaround for compact committees bug
https://github.com/ethereum/eth2.0-specs/issues/1315
* v0.8: updates to make the EF tests pass
* Remove redundant max operation checks.
* Always supply both messages when checking attestation signatures -- allowing
verification of an attestation with no signatures.
* Swap the order of the fork and domain constant in `get_domain`, to match
the spec.
* rustfmt
* ef_tests: add new epoch processing tests
* Integrate v0.8 into master (compiles)
* Remove unused crates, fix clippy lints
* Replace v0.6.3 tags w/ v0.8.1
* Remove old comment
* Ensure lmd ghost tests only run in release
* Update readme
* Change reduced tree for adding weightless node
* Add more comments for reduced tree fork choice
* Small refactor on reduced tree for readability
* Move test_harness forking logic into itself
* Add new `AncestorIter` trait to store
* Add unfinished tests to fork choice
* Make `beacon_state.genesis_block_root` public
* Add failing lmd_ghost fork choice tests
* Extend fork_choice tests, create failing test
* Implement Debug for generic ReducedTree
* Add lazy_static to fork choice tests
* Add verify_integrity fn to reduced tree
* Fix bugs in reduced tree
* Ensure all reduced tree tests verify integrity
* Slightly alter reduce tree test params
* Add (failing) reduced tree test
* Fix bug in fork choice
Iter ancestors was not working well with skip slots
* Put maximum depth for common ancestor search
Ensures that we don't search back past the finalized root.
* Add basic finalization tests for reduced tree
* Change fork choice to use beacon_block_root
Previously it was using target_root, which was wrong
* Change reduced tree for adding weightless node
* Add more comments for reduced tree fork choice
* Small refactor on reduced tree for readability
* Move test_harness forking logic into itself
* Add new `AncestorIter` trait to store
* Add unfinished tests to fork choice
* Make `beacon_state.genesis_block_root` public
* Add failing lmd_ghost fork choice tests
* Extend fork_choice tests, create failing test
* Implement Debug for generic ReducedTree
* Add lazy_static to fork choice tests
* Add verify_integrity fn to reduced tree
* Fix bugs in reduced tree
* Ensure all reduced tree tests verify integrity
* Slightly alter reduce tree test params
* Add (failing) reduced tree test
* Fix bug in fork choice
Iter ancestors was not working well with skip slots
* Put maximum depth for common ancestor search
Ensures that we don't search back past the finalized root.
* Add basic finalization tests for reduced tree
* Add network dir CLI flag
* Simplify "NewSlot" log message
* Rename network-dir CLI flag
* Change fork choice to use beacon_block_root
Previously it was using target_root, which was wrong
* Update db dir size for metrics
* Change slog to use `FullFormat` logging
* Update some comments and log formatting
* Add prom gauge for best block root
* Only add known target blocks to fork choice
* Add finalized and justified root prom metrics
* Add CLI flag for setting log level
* Add logger to beacon chain
* Add debug-level CLI flag to validator
* Allow block processing if fork choice fails
* Create warn log when there's low libp2p peer count
* Minor change to logging
* Make ancestor iter return option
* Disable fork choice test when !debug_assertions
* Fix type, removed code fragment
* Tidy some borrow-checker evading
* Lower reduced tree random test iterations
* Fix syncing bugs by recursively attempting to process parents in the import queue, change BlockRootsIterator
* Swap from crossbeam channel to tokio mpsc
* Recursion fix
* Remove exess block processing
* Fix network lag, correct attestation topic
* Correct network poll logic
* Overhaul of SimpleSync and modify BlockRootsIterator to return start_slot
* Fix bug in tests relating to StateRootsIterator
* Remove old, commented-out heartbeat code.
* Tidy docs on import queue enum
* Change source logging msg in simple sync
* Rename function parameter in simple sync
* Use `BestBlockRootsIterator` in `reduced_tree`
* Update comments for `BestBlockRootsIterator`
* Fix duplicate dep in cargo.toml
