Try assert plain as mentioned here:

pytest-dev/pytest-mock#102
technologiestiftung · Jun 20, 2018 · d122aa3 · d122aa3
1 parent 507e9ee
commit d122aa3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -19,5 +19,5 @@ jobs:
           key: v1-py-cache-{{ .Branch }}-{{ checksum "requirements.txt" }}
           paths:
             - ~/venv
-      - run: pytest --cov=./
+      - run: pytest --cov=./ --assert=plain
       - run: bash <(curl -s https://codecov.io/bash)