fix: ls differentiate exit codes for empty and non-existent buckets #1851

	name: ci
	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	jobs:
	build:
	strategy:
	matrix:
	go-version:
	- 1.20.x
	- 1.19.x
	os:
	- macos
	- ubuntu
	- windows

	name: build (${{ matrix.os }}/go-${{ matrix.go-version }})
	runs-on: ${{ matrix.os }}-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go-version }}

	- run: make build

	test:
	strategy:
	matrix:
	go-version:
	- 1.20.x
	- 1.19.x
	os:
	- macos
	- ubuntu
	- windows

	name: test (${{ matrix.os }}/go-${{ matrix.go-version }})
	runs-on: ${{ matrix.os }}-latest
	services:
	minio:
	image: ${{ (matrix.os == 'ubuntu') && 'bitnami/minio:2023.7.18' \|\| ''}}
	ports:
	- 45677:9000
	options: >-
	--health-cmd "curl -I http://localhost:9000/minio/health/live -s"
	--health-interval 10s
	--health-timeout 5s
	--health-retries 5
	env:
	MINIO_ROOT_USER: minioadmin
	MINIO_ROOT_PASSWORD: minioadmin
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go-version }}

	- run: make test
	env:
	S5CMD_TEST_ENDPOINT_URL: ${{ (matrix.os == 'ubuntu') && 'http://localhost:45677' \|\| '' }}
	qa:
	strategy:
	matrix:
	go-version:
	- 1.20.x
	os:
	- ubuntu

	runs-on: ${{ matrix.os }}-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go-version }}

	- run: make check-fmt
	- run: go install github.com/golang/mock/mockgen@v1.6.0
	- run: make check-codegen
	- run: make vet
	- run: go install honnef.co/go/tools/cmd/staticcheck@v0.4.3
	- run: make staticcheck
	- run: go install mvdan.cc/unparam@latest
	- run: make unparam

Provide feedback