Travis CI: Timeout manually

Author: hroncok

.travis.yml

@@ -15,7 +15,9 @@ script:
 - pipenv graph
 - pipenv run test
 - pipenv run naucse list-courses  # don't remove, there might be timeouts otherwise, see naucse/cli.py for details
-- pipenv run naucse freeze --verbose
+# we utilize our own timeout here to fail the build and store the cache
+# Travis CI would kill the entire job in 50 minutes, so we exit this after 40, to leave 10 minutes for setup + cache upload
+- timeout 2400 pipenv run naucse freeze --verbose
 after_script:
 - echo "Suplementary logs:"
 - cat .arca/naucse.log