Fix kusama validators getting 0 backing rewards the first session they enter the active set #15712

	name: Rustfmt check

	on:
	push:
	branches:
	- master
	pull_request:
	types: [opened, synchronize, reopened, ready_for_review]
	merge_group:

	jobs:
	quick_check:
	strategy:
	matrix:
	os: ["ubuntu-latest"]
	runs-on: ${{ matrix.os }}
	container:
	image: docker.io/paritytech/ci-unified:bullseye-1.75.0-2024-01-22-v20240109
	steps:
	- uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1

	- name: Cargo fmt
	run: cargo +nightly fmt --all -- --check

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