Update CI to use Rust 1.74, the new MSRV. #109

	name: CI

	on:
	pull_request:
	push:
	branches:
	- main

	env:
	RUST_BACKTRACE: 1

	jobs:
	ci-everything:
	name: All CI stages
	runs-on: ubuntu-latest
	needs:
	- test-build
	- test-action
	- test-inputs
	- test-cache
	if: ${{ success() \|\| failure() }} # Run this job even if a dependency has failed.
	steps:
	- name: Job outcomes
	run: \|
	echo "test-build: ${{ needs.test-build.result }}"
	echo "test-action: ${{ needs.test-action.result }}"
	echo "test-inputs: ${{ needs.test-inputs.result }}"
	echo "test-cache: ${{ needs.test-cache.result }}"

	# Fail this required job if any of its dependent jobs have failed.
	#
	# Do not attempt to consolidate these steps into one step, it won't work.
	# Multi-line `if` clauses are not evaluated properly: see the intermediate commits in
	# https://github.com/obi1kenobi/cargo-semver-checks/pull/405
	- if: ${{ needs.test-build.result != 'success' }}
	run: exit 1
	- if: ${{ needs.test-action.result != 'success' }}
	run: exit 1
	- if: ${{ needs.test-inputs.result != 'success' }}
	run: exit 1
	- if: ${{ needs.test-cache.result != 'success' }}
	run: exit 1

	test-build:
	name: Test build
	uses: ./.github/workflows/test-build.yml

	test-action:
	name: Smoke test the action
	uses: ./.github/workflows/test-action.yml

	test-inputs:
	name: Test action inputs
	uses: ./.github/workflows/test-inputs.yml

	test-cache:
	name: Test rustdoc caching
	uses: ./.github/workflows/test-cache.yml

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