dcrdtest: avoid concurrent exec.Cmd.Wait calls #63

	name: Build and Test
	on: [push, pull_request]
	permissions:
	contents: read

	jobs:
	build:
	name: Go CI
	strategy:
	matrix:
	go: ["1.19", "1.20"]
	os: [ubuntu-latest, macos-latest, windows-latest]
	runs-on: ${{ matrix.os }}
	steps:
	# Prepare env.
	- name: Set up Go
	uses: actions/setup-go@6edd4406fa81c3da01a34fa6f6343087c207a568 #v3.5.0
	with:
	go-version: ${{ matrix.go }}
	- name: Install Linters
	run: "curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh \| sh -s -- -b $(go env GOPATH)/bin v1.53.1"
	shell: bash
	- name: Set git config to please linters
	run: \|
	git config --global core.autocrlf false
	git config --global core.eol lf

	# Test repository.
	- name: Check out source
	uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab #v3.5.2
	- name: Test
	run: sh ./run_tests.sh

Provide feedback