Cron: test_diff_with_editable fails on Windows in GitHub Actions

[atugushev]

Environment Versions

1. OS Type: Windows Server 2019, Windows Server 2016 R2
2. Python version: 2.7, 3.5, 3.6, 3.7
3. pip version: all supported by pip-tools
4. pip-tools version: master.

Steps to replicate

Run tox in GitHub Actions on Windows.

Expected result

The test should pass.

Actual result

Test fails:

>       assert str(package.link) == _get_file_url(path_to_package)
E       AssertionError: assert 'file:///D:/a...ake_with_deps' == 'file:///d:/a...ake_with_deps'
E         Skipping 60 identical trailing characters in diff, use -v to show
E         - file:///D:/a/pip-t
E         ?         ^
E         + file:///d:/a/pip-t
E         ?         ^

For the full output, see the cron log https://github.com/jazzband/pip-tools/runs/255927631#step:5:47.

Additional notes

Recently, there was an issue #885, which might be related to this, but I've checked the oldest pytest versions, and the result is the same.

This test only fails on Windows in GitHub Actions. Tests pass in AppVeyor.