Fix all 'assigned but unused variable' warnings #337

	name: RSpec tests

	on:
	push:
	branches: [ master, "*-stable" ]
	pull_request:
	branches: [ master, 2-8-stable ]

	jobs:
	ruby:
	name: ${{ matrix.ruby }} (timeout ${{ matrix.timeout }})
	runs-on: ubuntu-latest
	timeout-minutes: ${{ matrix.timeout }}
	strategy:
	fail-fast: false
	matrix:
	include:
	- ruby: 2.5
	timeout: 5
	- ruby: 2.6
	timeout: 5
	- ruby: 2.7
	timeout: 5
	- ruby: '3.0'
	timeout: 5
	- ruby: 3.1
	timeout: 5
	- ruby: 3.2
	timeout: 5
	- ruby: 3.3
	timeout: 5
	- ruby: truffleruby
	timeout: 50
	- ruby: truffleruby-head
	timeout: 50
	- ruby: jruby
	timeout: 5
	- ruby: jruby-head
	timeout: 5
	- ruby: jruby-9.4
	timeout: 5
	- ruby: jruby-9.3
	timeout: 5
	- ruby: jruby-9.2
	timeout: 5
	steps:
	- name: Installing libyaml-dev
	run: \|
	sudo apt-get update
	sudo apt-get install libyaml-dev
	- uses: actions/checkout@v2
	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	rubygems: 3.3.12
	bundler-cache: true
	- name: Run tests
	run: bundle exec rake spec
	continue-on-error: ${{ matrix.ruby == 'truffleruby-head' \|\| matrix.ruby == 'truffleruby' }}
	actionmailer:
	runs-on: ubuntu-latest
	steps:
	- name: Installing libyaml-dev
	run: \|
	sudo apt-get update
	sudo apt-get install libyaml-dev
	- uses: actions/checkout@v2
	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: 3
	bundler-cache: true
	- name: Setup mail with ActionMailer edge
	run: \|
	git clone --depth=1 https://github.com/rails/rails.git -b main
	cd rails
	echo -e "\ngem 'mail', path: '../'" >> Gemfile
	bundle update --bundler --source mail
	- name: Run ActionMailer tests
	run: \|
	cd rails/actionmailer
	bundle exec rake

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