Use unwrap_or_else to avoid evaluation in shutdown #2

	on: [push, pull_request]

	name: E2E tests

	jobs:
	e2e-testing:
	strategy:
	fail-fast: false
	matrix:
	workflow:
	- 3-nodes-transfer
	- invoice-ops
	- open-use-close-a-channel
	- udt
	release:
	- "0.116.1"
	name: e2e test for ${{ matrix.workflow }}
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: Swatinem/rust-cache@v2
	- uses: dsherret/rust-toolchain-file@v1
	- name: Install dependencies
	run: \|
	version=${{ matrix.release }}
	wget "https://github.com/nervosnetwork/ckb/releases/download/v${version}/ckb_v${version}_x86_64-unknown-linux-gnu-portable.tar.gz"
	tar -xvaf "ckb_v${version}_x86_64-unknown-linux-gnu-portable.tar.gz"
	sudo mv "ckb_v${version}_x86_64-unknown-linux-gnu-portable"/* /usr/local/bin/

	- name: Start nodes
	run: \|
	# Prebuild the program so that we can run the following script faster
	cargo build
	cd tests/deploy/udt-init && cargo build && cd -
	./tests/nodes/start.sh &

	# Wait for the nodes to start, the initialization takes some time
	# check port 127.0.0.1:(41714 ~ 41716) are open
	for i in {1..20}; do
	all_open=true
	for port in 41714 41715 41716 8114; do
	if ! nc -z 127.0.0.1 $port; then
	all_open=false
	break
	fi
	done
	if $all_open; then
	echo "All ports are open"
	break
	else
	echo "Not all ports are open, waiting 3 seconds before retrying"
	sleep 3
	fi
	done

	(cd ./tests/bruno; npm exec -- @usebruno/cli run e2e/${{ matrix.workflow }} -r --env test) &
	# -n means we will exit when any of the background processes exits.
	# https://www.gnu.org/software/bash/manual/bash.html#index-wait
	wait -n

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