Avoid panic in `Keypair.from_base58_string` #359

	name: lint
	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	lint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- uses: hecrj/setup-rust-action@v1
	with:
	rust-version: nightly
	components: clippy

	- name: Set up Python
	uses: actions/setup-python@v1
	with:
	python-version: "3.10"

	#----------------------------------------------
	# ----- install & configure poetry -----
	#----------------------------------------------
	- name: Install and configure Poetry
	uses: snok/install-poetry@v1
	with:
	version: 1.3.2
	virtualenvs-create: true
	virtualenvs-in-project: true
	installer-parallel: true
	- name: install library
	run: poetry install --no-interaction

	- name: lint
	run: poetry run make lint

Provide feedback