We do not need to check coverage for this project.

--- flaky-3.8.1/requirements-dev.txt.orig
+++ flaky-3.8.1/requirements-dev.txt
@@ -1,8 +1,6 @@
 -rrequirements.txt
-coveralls
 pycodestyle
 pylint
 pytest
-pytest-cov
 pytest-xdist
 tox