Backport PR #16112 on branch v3.1.x (CI: Fail when failed to install dependencies)#16136

Merged

Kojoley merged 1 commit intomatplotlib:v3.1.xfrom

Kojoley:auto-backport-of-pr-16112-on-v3.1.x

Jan 7, 2020

Commits on Jan 7, 2020

Merge pull request #16112 from Kojoley/ci-travis-fail-when-dep-install-fails

NelleV
authored and
Kojoley
committed