Apparently the new eslint version doesn't work with the older version of
node that we were using. Asking for '@v2' seems to help. It's unclear
what version of node we get now though since v2 isn't as verbose in its
output.
The ability to use Sauce Labs for pull requests has now stopped working,
as Travis warned about several years ago. Instead run our tests directly
on GitHub on their various virtual machines.
Pierre Ossman
Samuel Mannehed