* update tinyvec to 1.6.0

* update once_cell to 1.18.0

* update data-encoding to 2.4.0

* update libc

* update js-sys

* update wasm-bindgen-futures

* update pin-project

* update tokio

* update syn

* p2p protocol now contains `PeerId`

not multihash

* update arrayvec to 0.7.4

* update sha2

* update smallvec

* updates to Cargo.lock after merge

* redo dep updates

* update lru

in attempt to compile polkadot

* update lockfile for {"substrate"}

---------

Co-authored-by: parity-processbot <>

* add tests to worker common thread

* fix formatting

* move worker commons unit test from integration tests to worker file and do some improvements

* fix import on it/worker_common

* move worker commons unit test to test module

* cargo fmt

* move cpu_time_monitor_loop to test outside of thread module

* change worker thread unit test to use assert_eq

* fix formatting

* adding new methods to WaitOucome, fix pvf worker unit test

* fix formatting

* remove is_finished and is_timeout methods from WaitOutcome

* fix wait_for_threads_with_timeout_returns_outcome test

* ".git/.scripts/commands/fmt/fmt.sh"

* add common worker cond_notify_on_done_should_update_wait_outcome_when_panic test

---------

Co-authored-by: Marcin S <[email protected]>
Co-authored-by: command-bot <>

Signed-off-by: Andrei Sandu <[email protected]>

* Add polkadot XCM benchmarks

* Add temp

* ".git/.scripts/commands/bench/bench.sh" xcm polkadot pallet_xcm_benchmarks::fungible

* ".git/.scripts/commands/bench/bench.sh" xcm polkadot pallet_xcm_benchmarks::generic

* Add weights to XCM on Polkadot

* Make CI fail on old files

Signed-off-by: Oliver Tale-Yazdi <[email protected]>

* Update template

Signed-off-by: Oliver Tale-Yazdi <[email protected]>

* Add reserve_asset_deposited benchmark

* ".git/.scripts/commands/bench/bench.sh" xcm kusama pallet_xcm_benchmarks::generic

* Update weights

Signed-off-by: Oliver Tale-Yazdi <[email protected]>

* Change initiate_reserve_deposit in runtime weights

* Update weights

Signed-off-by: Oliver Tale-Yazdi <[email protected]>

* Remove trusted reserves from runtimes

* Fix pallet-xcm-benchmarks mock

* Fix test

* Change pallet xcm weigher in kusama

* Fix

* Remove merge conflict artifact

* Remove initiate_reserve_withdraw from generic benchmarks

* Add missing implementation to XCM benchmark

* Fix failing karura test

* Remove dbg!

Co-authored-by: Keith Yeung <[email protected]>

* Fix fmt

* Revert "Fix fmt"

This reverts commit 676f2d8db07d7427750c79f95494d4988d06fda5.

* Fix fmt

* Remove duplicated template code

* Add back part of the template

* ".git/.scripts/commands/bench-vm/bench-vm.sh" xcm polkadot pallet_xcm_benchmarks::fungible

* Don't skip reserve asset deposited benchmark

* Remove call to non-generated benchmark yet

* Underscore unused parameter

* Skip not supported benchmarks and hardcode value

* Remove ReserveAssetDeposited benchmark

* ".git/.scripts/commands/bench-vm/bench-vm.sh" xcm polkadot pallet_xcm_benchmarks::fungible

* Add back ReserveAssetDeposited

* ".git/.scripts/commands/bench-vm/bench-vm.sh" xcm polkadot pallet_xcm_benchmarks::fungible

* Use default benchmark for ReserveAssetDeposited

* Add missing parameter

* Revert reserve asset deposited benchmark

* ".git/.scripts/commands/bench-vm/bench-vm.sh" xcm kusama pallet_xcm_benchmarks::fungible

* ".git/.scripts/commands/bench-vm/bench-vm.sh" xcm westend pallet_xcm_benchmarks::fungible

* ".git/.scripts/commands/bench/bench.sh" xcm rococo pallet_xcm_benchmarks::fungible

* Add 'real' benchmarks

* Add TrustedReserve to actual XcmConfig

* Add TrustedReserve to actual XcmConfig (fix)

* Whitelist from benchmarking XCM storage keys read each block (#6871)

* Whitelist from benchmarking XCM storage keys read each block

* ".git/.scripts/commands/bench/bench.sh" runtime polkadot pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime polkadot pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime westend pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime rococo pallet_xcm

* Remove XcmPallet SupportedVersion from the benchmark whitelist

* ".git/.scripts/commands/bench/bench.sh" runtime polkadot pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime kusama pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime westend pallet_xcm

* ".git/.scripts/commands/bench/bench.sh" runtime rococo pallet_xcm

* WIP

* Add necessary traits, remove unnecessary whitelisted keys

* Fix tests

* Remove unused file

* Remove unused import

---------

Co-authored-by: command-bot <>

* ".git/.scripts/commands/bench/bench.sh" xcm kusama pallet_xcm_benchmarks::fungible

* ".git/.scripts/commands/bench/bench.sh" xcm kusama pallet_xcm_benchmarks::fungible

* ".git/.scripts/commands/bench/bench.sh" xcm kusama pallet_xcm_benchmarks::fungible

* ".git/.scripts/commands/bench/bench.sh" xcm rococo pallet_xcm_benchmarks::fungible

* ".git/.scripts/commands/bench/bench.sh" xcm westend pallet_xcm_benchmarks::fungible

* Fix spellchecker issues

* Remove unused migration code

---------

Signed-off-by: Oliver Tale-Yazdi <[email protected]>
Co-authored-by: command-bot <>
Co-authored-by: Oliver Tale-Yazdi <[email protected]>
Co-authored-by: Keith Yeung <[email protected]>

* Companion for removal of execution strategies

https://github.com/paritytech/substrate/pull/14387

* Fix some tests

* 🤦

* Adapt to latest changes

* Start supporting the offchain transaction pool

* Fix tests

* FMT

* Remove patches

* Update Substrate

* update lockfile for {"substrate"}

* Fix parachain upgrade smoke test

* Fix test

* Rewrite all tests to use `MockSubstemClient`

---------

Co-authored-by: parity-processbot <>

* Remove redundant erasure encoding

Signed-off-by: Andrei Sandu <[email protected]>

* Review feedback

Signed-off-by: Andrei Sandu <[email protected]>

* fix comments

Signed-off-by: Andrei Sandu <[email protected]>

---------

Signed-off-by: Andrei Sandu <[email protected]>

* Introduce `ci-only-tests` feature

* Add comment

* Begin adding landlock + test

* Move PVF implementer's guide section to own page, document security

* Implement test

* Add some docs

* Do some cleanup

* Fix typo

* Warn on host startup if landlock is not supported

* Clarify docs a bit

* Minor improvements

* Add some docs about determinism

* Address review comments (mainly add warning on landlock error)

* Update node/core/pvf/src/host.rs

Co-authored-by: Andrei Sandu <[email protected]>

* Update node/core/pvf/src/host.rs

Co-authored-by: Andrei Sandu <[email protected]>

* Fix unused fn

* Update ABI docs to reflect latest discussions

* Remove outdated notes

* Try to trigger new test-linux-oldkernel-stable job

Job introduced in https://github.com/paritytech/polkadot/pull/7371

.

---------

Co-authored-by: Andrei Sandu <[email protected]>

* Move expensive computations to blocking thread

Signed-off-by: Andrei Sandu <[email protected]>

* fix test

Signed-off-by: Andrei Sandu <[email protected]>

* add internal error and fix dependent subystems

Signed-off-by: Andrei Sandu <[email protected]>

* fmt

Signed-off-by: Andrei Sandu <[email protected]>

* fix test fix

Signed-off-by: Andrei Sandu <[email protected]>

* minor refactor and TODOs

Signed-off-by: Andrei Sandu <[email protected]>

* Impl Feedback for Review

Signed-off-by: Andrei Sandu <[email protected]>

* review feedback

Signed-off-by: Andrei Sandu <[email protected]>

* More docs

Signed-off-by: Andrei Sandu <[email protected]>

* add some example timings in comments

Signed-off-by: Andrei Sandu <[email protected]>

---------

Signed-off-by: Andrei Sandu <[email protected]>

* Warn if participated in the losing side of a dispute

* Update naming

* Additionally filter by candidate hash

* Debug zombienet tests

* Update 0002-parachains-disputes.zndsl

* Debug zombienet

* Update node/core/dispute-coordinator/src/initialized.rs

Co-authored-by: Andrei Sandu <[email protected]>

* Add checking to zombienet tests

---------

Co-authored-by: Andrei Sandu <[email protected]>

Signed-off-by: Andrei Sandu <[email protected]>

* Move vstaging to production (and thus past session slashing).

WIP: test-runtime still needs to be fixed.

* Fix test-runtime.

---------

Co-authored-by: eskimor <[email protected]>

* av-store: Move prune on a separate thread

There are situations where pruning of the data could take more than a few
seconds and that might make the whole subsystem unreponsive. To avoid this just
move the prune process on a separate thread.

See: https://github.com/paritytech/polkadot/issues/7237

, for more details.

Signed-off-by: Alexandru Gheorghe <[email protected]>

* av-store: Add log that prunning started

Signed-off-by: Alexandru Gheorghe <[email protected]>

* av-store: modify log severity

Signed-off-by: Alexandru Gheorghe <[email protected]>

---------

Signed-off-by: Alexandru Gheorghe <[email protected]>

* runtime/vstaging: unapplied_slashes runtime API

* runtime/vstaging: key_ownership_proof runtime API

* runtime/ParachainHost: submit_report_dispute_lost

* fix key_ownership_proof API

* runtime: submit_report_dispute_lost runtime API

* nits

* Update node/subsystem-types/src/messages.rs

Co-authored-by: Marcin S. <[email protected]>

* revert unrelated fmt changes

* dispute-coordinator: past session dispute slashing

* encapsule runtime api call for submitting report

* prettify: extract into a function

* do not exit on runtime api error

* fix tests

* try initial zombienet test

* try something

* fix a typo

* try cumulus-based collator

* fix clippy

* build polkadot-debug images with fast-runtime enabled

* wip

* runtime/inclusion: fix availability_threshold

* fix wip

* fix wip II

* revert native provider

* propagate tx submission error

* DEBUG: sync=trace

* print key ownership proof len

* panic repro

* log validator index in panic message

* post merge fixes

* replace debug assertion with a log

* fix compilation

* Let's log the dispatch info in validate block.

* fix double encoding

* Revert "Let's log the dispatch info in validate block."

This reverts commit a70fbc51b464d7f4355dbada5e16cd83cf71eab4.

* Revert "Let's log the dispatch info in validate block."

This reverts commit a70fbc51b464d7f4355dbada5e16cd83cf71eab4.

* fix compilation

* update to latest zombienet and fix test

* lower finality lag to 11

* bump zombienet again

* add a workaround, but still does not work

* Update .gitlab-ci.yml

bump zombienet.

* add a comment and search logs on all nodes

---------

Co-authored-by: Marcin S. <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>
Co-authored-by: Javier Viola <[email protected]>

* PVF: Instantiate wasm in pre-checking

* Move `runtime_construction_check` to prepare thread, use bytes

* [minor] Update comment

* Fix compile error

* Update Cargo.lock

* Update docs

* Add some missing docs!

* Replace `RollingSessionWindow` with `RuntimeInfo` - initial commit

* Fix tests in import

* Fix the rest of the tests

* Remove dead code

* Fix todos

* Simplify session caching

* Comments for `SessionInfoProvider`

* Separate `SessionInfoProvider` from `State`

* `cache_session_info_for_head` becomes freestanding function

* Remove unneeded `mut` usage

* fn session_info -> fn get_session_info() to avoid name clashes. The function also tries to initialize `SessionInfoProvider`

* Fix SessionInfo retrieval

* Code cleanup

* Don't wrap `SessionInfoProvider` in an `Option`

* Remove `earliest_session()`

* Remove pre-caching -> wip

* Fix some tests and code cleanup

* Fix all tests

* Fixes in tests

* Fix comments, variable names and small style changes

* Fix a warning

* impl From<SessionWindowSize> for NonZeroUsize

* Fix logging for `get_session_info` - remove redundant logs and decrease log level to DEBUG

* Code review feedback

* Storage migration removing `COL_SESSION_WINDOW_DATA` from parachains db

* Remove `col_session_data` usages

* Storage migration clearing columns w/o removing them

* Remove session data column usages from `approval-voting` and `dispute-coordinator` tests

* Add some test cases from `RollingSessionWindow` to `dispute-coordinator` tests

* Fix formatting in initialized.rs

* Fix a corner case in `SessionInfo` caching for `dispute-coordinator`

* Remove `RollingSessionWindow` ;(

* Revert "Fix formatting in initialized.rs"

This reverts commit 0f94664ec9f3a7e3737a30291195990e1e7065fc.

* v2 to v3 migration drops `COL_DISPUTE_COORDINATOR_DATA` instead of clearing it

* Fix `NUM_COLUMNS` in `approval-voting`

* Use `columns::v3::NUM_COLUMNS` when opening db

* Update node/service/src/parachains_db/upgrade.rs

Co-authored-by: Andrei Sandu <[email protected]>

* Don't write in `COL_DISPUTE_COORDINATOR_DATA` for `test_rocksdb_migrate_2_to_3`

* Fix `NUM+COLUMNS` in approval_voting

* Fix formatting

* Fix columns usage

* Clarification comments about the different db versions

---------

Co-authored-by: Andrei Sandu <[email protected]>

* runtime/vstaging: unapplied_slashes runtime API

* runtime/vstaging: key_ownership_proof runtime API

* runtime/ParachainHost: submit_report_dispute_lost

* fix key_ownership_proof API

* runtime: submit_report_dispute_lost runtime API

* nits

* Update node/subsystem-types/src/messages.rs

Co-authored-by: Marcin S. <[email protected]>

* revert unrelated fmt changes

* post merge fixes

* fix compilation

---------

Co-authored-by: Marcin S. <[email protected]>

* PVF: Refactor workers into separate crates, remove host dependency

* Fix compile error

* Remove some leftover code

* Fix compile errors

* Update Cargo.lock

* Remove worker main.rs files

I accidentally copied these from the other PR. This PR isn't intended to
introduce standalone workers yet.

* Address review comments

* cargo fmt

* Update a couple of comments

* Update log targets

* Companion: Substrate#13869

https://github.com/paritytech/substrate/pull/13869

* update lockfile for {"substrate"}

* ".git/.scripts/commands/fmt/fmt.sh"

---------

Co-authored-by: parity-processbot <>

* PVF: instantiate runtime from bytes

* Update naming

* Make `issue_explicit_statement_with_index` regular function

* Make `issue_backing_statement_with_index` regular function

* Issue `RevertBlocks` as soon as a dispute has `byzantine threshold + 1` invalid votes.

* Remove a comment

* Fix `has_fresh_byzantine_threshold_against()`

* Extend `informs_chain_selection_when_dispute_concluded_against` test

* PVF: Remove `rayon` and some uses of `tokio`

1. We were using `rayon` to spawn a superfluous thread to do execution, so it was removed.

2. We were using `rayon` to set a threadpool-specific thread stack size, and AFAIK we couldn't do that with `tokio` (it's possible [per-runtime](https://docs.rs/tokio/latest/tokio/runtime/struct.Builder.html#method.thread_stack_size) but not per-thread). Since we want to remove `tokio` from the workers [anyway](https://github.com/paritytech/polkadot/issues/7117), I changed it to spawn threads with the `std::thread` API instead of `tokio`.[^1]

[^1]: NOTE: This PR does not totally remove the `tokio` dependency just yet.

3. Since `std::thread` API is not async, we could no longer `select!` on the threads as futures, so the `select!` was changed to a naive loop.

4. The order of thread selection was flipped to make (3) sound (see note in code).

I left some TODO's related to panics which I'm going to address soon as part of https://github.com/paritytech/polkadot/issues/7045.

* PVF: Vote invalid on panics in execution thread (after a retry)

Also make sure we kill the worker process on panic errors and internal errors to
potentially clear any error states independent of the candidate.

* Address a couple of TODOs

Addresses a couple of follow-up TODOs from
https://github.com/paritytech/polkadot/pull/7153

.

* Add some documentation to implementer's guide

* Fix compile error

* Fix compile errors

* Fix compile error

* Update roadmap/implementers-guide/src/node/utility/candidate-validation.md

Co-authored-by: Andrei Sandu <[email protected]>

* Address comments + couple other changes (see message)

- Measure the CPU time in the prepare thread, so the observed time is not
  affected by any delays in joining on the thread.

- Measure the full CPU time in the execute thread.

* Implement proper thread synchronization

Use condvars i.e. `Arc::new((Mutex::new(true), Condvar::new()))` as per the std
docs.

Considered also using a condvar to signal the CPU thread to end, in place of an
mpsc channel. This was not done because `Condvar::wait_timeout_while` is
documented as being imprecise, and `mpsc::Receiver::recv_timeout` is not
documented as such. Also, we would need a separate condvar, to avoid this case:
the worker thread finishes its job, notifies the condvar, the CPU thread returns
first, and we join on it and not the worker thread. So it was simpler to leave
this part as is.

* Catch panics in threads so we always notify condvar

* Use `WaitOutcome` enum instead of bool condition variable

* Fix retry timeouts to depend on exec timeout kind

* Address review comments

* Make the API for condvars in workers nicer

* Add a doc

* Use condvar for memory stats thread

* Small refactor

* Enumerate internal validation errors in an enum

* Fix comment

* Add a log

* Fix test

* Update variant naming

* Address a missed TODO

---------

Co-authored-by: Andrei Sandu <[email protected]>

* Replace `RollingSessionWindow` with `RuntimeInfo` - initial commit

* Fix tests in import

* Fix the rest of the tests

* Remove dead code

* Fix todos

* Simplify session caching

* Comments for `SessionInfoProvider`

* Separate `SessionInfoProvider` from `State`

* `cache_session_info_for_head` becomes freestanding function

* Remove unneeded `mut` usage

* fn session_info -> fn get_session_info() to avoid name clashes. The function also tries to initialize `SessionInfoProvider`

* Fix SessionInfo retrieval

* Code cleanup

* Don't wrap `SessionInfoProvider` in an `Option`

* Remove `earliest_session()`

* Remove pre-caching -> wip

* Fix some tests and code cleanup

* Fix all tests

* Fixes in tests

* Fix comments, variable names and small style changes

* Fix a warning

* impl From<SessionWindowSize> for NonZeroUsize

* Fix logging for `get_session_info` - remove redundant logs and decrease log level to DEBUG

* Code review feedback

* impl QueryChunkSize

Signed-off-by: Andrei Sandu <[email protected]>

* QueryChunkSize message

Signed-off-by: Andrei Sandu <[email protected]>

* enable fetching from backing group for small pov

Signed-off-by: Andrei Sandu <[email protected]>

* review feedback

Signed-off-by: Andrei Sandu <[email protected]>

* Refactor `bypass_availability_store`

Signed-off-by: Andrei Sandu <[email protected]>

* review feedback

Signed-off-by: Andrei Sandu <[email protected]>

---------

Signed-off-by: Andrei Sandu <[email protected]>

* Companion for substrate #14036

* Rollback of some trivial renamings

* update lockfile

* Fix stalling dispute coordinator.

* Initialization.

---------

Co-authored-by: eskimor <[email protected]>

Rework `dispute-coordinator` to use `RuntimeInfo` for obtaining session information instead of `RollingSessionWindow` (#6968)

* Pass `SessionInfo` directly to `CandidateEnvironment::new` otherwise it should be an async function

* Replace calls to `RollingSessionWindow` with `RuntimeInfo`

Adjust `dispute-coordinator` initialization to use `RuntimeInfo`

* Modify `dispute-coordinator` initialization

* Pass `Hash` to `process_on_chain_votes` so that `RuntimeInfo` calls can be made

Remove some fixmes

* Pass `Hash` to `handle_import_statements` to perform `RuntimeInfo` calls

* remove todo comments

* Remove `error` from `Initialized`

Rework new session handling code

* Remove db code which is no longer used

* Update stale comment and remove unneeded type specification

* Cache SessionInfo on startup

* Use `DISPUTE_WINDOW` from primitives

* Fix caching in `process_active_leaves_update`

* handle_import_statements: leaf_hash -> block_hash

* Restore `ensure_available_session_info`

* Don't interrupt `process_on_chain_votes` if SessionInfo can't be fetched

* Small style improvements in logging

* process_on_chain_votes: leaf_hash -> block_hash

* Restore `note_earliest_session` - it is required to prune disputes and votes

* Cache new sessions only when there is an actual session change

* Fix tests

* `CandidateEnvironment::new` gets `session_idx` and fetches SessionInfo by itself to avoid the invariant where the input SessionIndex and SessionInfo parameters don't match

* Fix handling of missing session info

* Move sessions caching in `handle_startup` and fix tests

* Load `relay_parent` from db in `handle_import_statements` instead of passing it as a parameter via two functions

* Don't do two db reads

* Fix the twisted logic in `handle_import_statements`

* fixup

* Small style fix

* Decrease log levels for caching errors to debug and fix a typo

* Update outdated comment

* Remove `ensure_available_session_info`

* Load relay parent from db in `process_on_chain_votes`

* Revert "Load relay parent from db in `process_on_chain_votes`"

This reverts commit 978ad4f223d517faa7a7fbad96e3f8de4fa17501.

* Keep track of highest seen session and last session cached without gaps.

* Apply suggestions from code review

Co-authored-by: ordian <[email protected]>

* Handle session caching failure on startup correctly

* Update node/core/dispute-coordinator/src/initialized.rs

Co-authored-by: ordian <[email protected]>

* Simplify session caching retries

* Update stale comment

* Fix lower bound calculation for session caching

---------

Co-authored-by: ordian <[email protected]>

* Move PVF workers into separate crate

* Fix indentation

* Fix compilation errors

* Fix more compilation errors

* Rename `worker.rs` files, make host interface to worker more clear

* Fix more compilation errors

* Fix more compilation errors

* Add link to issue

* Address review comments

* Update comment

* PVF: Don't dispute on missing artifact

A dispute should never be raised if the local cache doesn't provide a certain
artifact. You can not dispute based on this reason, as it is a local hardware
issue and not related to the candidate to check.

Design:

Currently we assume that if we prepared an artifact, it remains there on-disk
until we prune it, i.e. we never check again if it's still there.

We can change it so that instead of artifact-not-found triggering a dispute, we
retry once (like we do for AmbiguousWorkerDeath, except we don't dispute if it
still doesn't work). And when enqueuing an execute job, we check for the
artifact on-disk, and start preparation if not found.

Changes:

- [x] Integration test (should fail without the following changes)
- [x] Check if artifact exists when executing, prepare if not
- [x] Return an internal error when file is missing
- [x] Retry once on internal errors
- [x] Document design (update impl guide)

* Add some context to wasm error message (it is quite long)

* Fix impl guide

* Add check for missing/inaccessible file

* Add comment referencing Substrate issue

* Add test for retrying internal errors

---------

Co-authored-by: parity-processbot <>

* pvf: Update docs for PVF artifacts

* pvf: Clarify doc re. node start-up

* Companion for substrate #13889

* Remove leftover

* Remove removed dependency

* Remove sp-consensus-vrf from lock

* Revert "Remove sp-consensus-vrf from lock"

This reverts commit 2269ca1e32df89272e8fd4544292204db387f436.

* Fix after substrate modifications

* Fix tests to use new VRF Signature type

* Don't rely of Deref trait

* Fix test

* Further code simplification

* Reuse garbage_vrf_signature

* update lockfile for {"substrate"}

---------

Co-authored-by: parity-processbot <>

Bumps [hex-literal](https://github.com/RustCrypto/utils) from 0.3.4 to 0.4.1.
- [Release notes](https://github.com/RustCrypto/utils/releases)
- [Commits](https://github.com/RustCrypto/utils/compare/hex-literal-v0.3.4...hex-literal-v0.4.1

)

---
updated-dependencies:
- dependency-name: hex-literal
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Simplify &(ref foo, _) tuple pattern matches
* Drop unneccessary .clone() calls
* Replace .position(cond).is_some() by .any(cond)
* Drop unneccessary lifetime specs

* Happy New Year!

* Remove year entierly

Co-authored-by: Oliver Tale-Yazdi <[email protected]>

* Remove years from copyright notice in the entire repo

---------

Co-authored-by: Oliver Tale-Yazdi <[email protected]>

Onchain scraper in `dispute-coordinator` will scrape `SCRAPED_FINALIZED_BLOCKS_COUNT` blocks before finality (#7013)

* Onchain scraper in `dispute-coordinator` will scrape `SCRAPED_FINALIZED_BLOCKS_COUNT` blocks before finality

The purpose is to make the availability of a `CandidateReceipt` for finalized candidates more likely.

For details see:  https://github.com/paritytech/polkadot/issues/7009

* Fix off by one error

* Replace `SCRAPED_FINALIZED_BLOCKS_COUNT` with `DISPUTE_CANDIDATE_LIFETIME_AFTER_FINALIZATION`

* Move version check to `worker_event_loop`

* More minor refactors

- More consistent use of `format_invalid` and `format_internal`.
- Fix a doc error.
- Fix some poorly-named local variables.