My builds fail since I added dist: xenial
, since PyPy appears unsupported there. Excerpt from a job log:
pypy is not installed; attempting download
Downloading archive: https://s3.amazonaws.com/travis-python-archives/binaries/ubuntu/16.04/x86_64/pypy.tar.bz2
$ curl -sSf -o pypy.tar.bz2 ${archive_url}
curl: (22) The requested URL returned error: 403 Forbidden
Unable to download pypy archive. The archive may not exist. Please consider a different version.