Logic for the (Core) Fellowship (#13503)

* More drafting

* Paymaster pallet

* Fix build

* More tests

* Rename

* Rename

* Renaming

* Revert old changes

* Multi-phase payouts to avoid bank-runs

* Tests

* Tests

* Allow payment to be targeted elsewhere

* Proper ssync payment failure handling

* Test for repayment

* Docs

* Impl RankedMembers for RankedCollective

* Implement Pay for Pot (i.e. basic account).

* Benchmarks

* Weights

* Introduce Salary benchmark into node

* Fix warning

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_salary

* Update primitives/arithmetic/src/traits.rs

Co-authored-by: Jegor Sidorenko <5252494+jsidorenko@users.noreply.github.com>

* Update frame/salary/src/lib.rs

Co-authored-by: Jegor Sidorenko <5252494+jsidorenko@users.noreply.github.com>

* Update lib.rs

* Update frame/salary/src/lib.rs

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

* Docs

* Update frame/salary/src/lib.rs

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

* Update frame/salary/src/lib.rs

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

* Fix

* Fixes

* Fixes

* Move some salary traits stuff to a shared location

* Initial draft

* Comment out bits

* Fix

* First couple of tests

* One more test

* Update frame/salary/src/lib.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update frame/salary/src/lib.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Mul floor

* Tests

* Mul floor

* Fix warnings

* Fix test

* Tests

* Last tests

* Docs

* Fix warnings

* Benchmarks

* Weights

* Integrate benchmark

* Fixes

* Fix

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_core_fellowship

* Better process flow

* Fix benchmarks & tests

* Docs

* Fixes

* Fixes

* docs

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_core_fellowship

* Docs and allow custom evidence size

* ".git/.scripts/commands/bench/bench.sh" pallet dev pallet_core_fellowship

* Update frame/core-fellowship/src/lib.rs

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Update frame/core-fellowship/src/tests.rs

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Update frame/core-fellowship/src/benchmarking.rs

* Update frame/core-fellowship/src/benchmarking.rs

* Apply suggestions from code review

* Rename

* Update primitives/arithmetic/src/traits.rs

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

* Reduce magic numbers

* Update frame/core-fellowship/src/lib.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Update frame/core-fellowship/src/lib.rs

Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Benchmark result

* Remove dependency

* set_params should pay

* induct should pay

* Remove some other free calls

---------

Co-authored-by: command-bot <>
Co-authored-by: Jegor Sidorenko <5252494+jsidorenko@users.noreply.github.com>
Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

substrate/frame/system/src/lib.rs

@@ -878,12 +878,9 @@ impl<
 
 	#[cfg(feature = "runtime-benchmarks")]
 	fn try_successful_origin() -> Result<O, ()> {
-		let zero_account_id =
-			AccountId::decode(&mut TrailingZeroInput::zeroes()).map_err(|_| ())?;
-		let members = Who::sorted_members();
-		let first_member = match members.get(0) {
+		let first_member = match Who::sorted_members().first() {
 			Some(account) => account.clone(),
-			None => zero_account_id,
+			None => AccountId::decode(&mut TrailingZeroInput::zeroes()).map_err(|_| ())?,
 		};
 		Ok(O::from(RawOrigin::Signed(first_member)))
 	}