fixup! before_script

Author: cclauss

Diff for: .travis.yml

@@ -13,6 +13,7 @@ jobs:
     - name: Project Euler
       install:
         - pip install pytest-cov pytest-subtests
+      before_script:
         - pytest --tb=no --no-summary --capture=no project_euler/validate_solutions.py || true  # fail fast on wrong solution
       script:
         - pytest --doctest-modules --durations=10 --cov-report=term-missing:skip-covered --cov=project_euler/ project_euler/