[nextest-runner] add a way to pass extra args at runtime #5170

	on:
	push:
	branches: [main, auto, canary]
	pull_request:
	branches:
	- main

	name: Test coverage

	jobs:
	coverage:
	name: Collect test coverage
	runs-on: ubuntu-latest
	# nightly rust might break from time to time
	continue-on-error: true
	env:
	RUSTFLAGS: -D warnings
	CARGO_TERM_COLOR: always
	steps:
	- uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
	# Nightly Rust is used for cargo llvm-cov --doc below.
	- uses: dtolnay/rust-toolchain@nightly
	with:
	components: llvm-tools-preview
	- uses: Swatinem/rust-cache@82a92a6e8fbeee089604da2575dc567ae9ddeaab # v2

	- name: Install latest nextest release
	uses: taiki-e/install-action@acf70b3a1ed953bccebc8c5d80cfdb16ec8ccc36 # v2
	with:
	tool: nextest
	- name: Install cargo-llvm-cov
	uses: taiki-e/install-action@acf70b3a1ed953bccebc8c5d80cfdb16ec8ccc36 # v2
	with:
	tool: cargo-llvm-cov

	- name: Collect coverage data
	# Generate separate reports for nextest and doctests, and combine them.
	run: \|
	cargo llvm-cov --no-report nextest
	cargo llvm-cov --no-report --doc
	cargo llvm-cov report --doctests --lcov --output-path lcov.info
	- name: Upload coverage data to codecov
	uses: codecov/codecov-action@7f8b4b4bde536c465e797be725718b88c5d95e0e # v5
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
	with:
	files: lcov.info

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