better error when offset doesn't match expected #27

	name: Python Tests
	on:
	push:
	branches:
	main
	pull_request:
	branches:
	main
	jobs:
	tests:
	name: Python ${{ matrix.python-version }}
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version:
	- '3.6'
	- '3.7'
	- '3.8'
	- '3.9'
	- '3.10'
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- uses: actions/cache@v2
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('requirements/*.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-
	- name: Upgrade packaging tools
	run: python -m pip install --upgrade pip setuptools virtualenv wheel
	- name: Install dependencies
	run: python -m pip install --upgrade codecov tox tox-py
	- name: Run tox targets for ${{ matrix.python-version }}
	run: tox --py current
	- name: Upload coverage
	run: \|
	codecov -e TOXENV,DJANGO

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