add AsyncMysqlQueryErrorResult and SQLFakeAsyncMysqlException #100

	name: Continuous Integration
	on:
	pull_request:
	jobs:
	build:
	name: HHVM ${{matrix.hhvm}} - ${{matrix.os}}
	strategy:
	# Run tests on all OS's and HHVM versions, even if one fails
	fail-fast: false
	matrix:
	os: [ ubuntu ]
	hhvm:
	- '4.128'
	- '4.153'
	runs-on: ${{matrix.os}}-20.04
	steps:
	- uses: actions/checkout@v2
	- name: Install Composer
	run: .github/workflows/install-composer.sh --install-dir=${{runner.temp}}
	- name: Install HHVM (apt)
	if: matrix.os == 'ubuntu'
	run: \|
	set -ex
	export DEBIAN_FRONTEND=noninteractive
	sudo apt-get update
	sudo apt-get install -y software-properties-common apt-transport-https
	sudo apt-key add .github/workflows/hhvm.gpg.key
	if [ "${{matrix.hhvm}}" = "nightly" ]; then
	sudo add-apt-repository https://dl.hhvm.com/ubuntu
	sudo apt-get install -y hhvm-nightly
	elif [ "${{matrix.hhvm}}" = "latest" ]; then
	sudo add-apt-repository https://dl.hhvm.com/ubuntu
	sudo apt-get install -y hhvm
	else
	DISTRO=$(lsb_release --codename --short)
	sudo add-apt-repository \
	"deb https://dl.hhvm.com/ubuntu ${DISTRO}-${{matrix.hhvm}} main"
	sudo apt remove hhvm
	sudo apt-get install -y hhvm
	fi
	- name: Inspect HHVM and Hack versions
	run: \|
	hhvm --version
	hh_client --version
	- name: Create branch for version alias
	run: git checkout -b CI_current_pull_request
	- name: Install project dependencies
	run: php ${{runner.temp}}/composer.phar install
	- name: Typecheck
	run: hh_client
	- name: Run tests
	run: vendor/bin/hacktest tests/
	- name: Run lint
	if: matrix.hhvm != 'nightly'
	run: vendor/bin/hhast-lint

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