Temporary fix for rb 1.8.7 on Travis CI
Temporary fix for rb 1.8.7 on Travis CI

Ruby 1.8.7 is broken otherwise, but doing this fixes it. No harm in running it for other rubies either.

See https://github.com/bundler/bundler/issues/2784 and https://github.com/travis-ci/travis-ci/issues/1793 for more context on the bug.

We should revert this once Travis has fixed it and rolled the fix out.

guilleiguaran/fakeredis,caulfield/fakeredis,alexlag/fakeredis,carsonreinke/fakeredis,alienxp03/fakeredis,hoffmanc/fakeredis,meetupcall/fakeredis,TiteiKo/fakeredis