CI tests fail on end-to-end test with Wikipedia

[Peter Bengtsson]

E.g. https://travis-ci.org/peterbe/minimalcss/builds/408164969?utm_source=github_status&utm_medium=notification

[Peter Bengtsson]

Uh?! Works locally:

▶ yarn e2e
yarn run v1.7.0
$ ./bin/e2e.js
Opening https://en.wikipedia.org/wiki/List_of_HTTP_status_codes ...
Took 3.47s
Opening https://nodejs.org/ ...
Took 1.87s
Opening https://news.ycombinator.com/ ...
Took 2.01s
✨  Done in 8.53s.