Prune some build artifacts on CI to speed up caching#1580

Merged

bors-voyager[bot] merged 5 commits intorust-lang:masterfrom

jtgeibel:ci/prune-cache

Dec 23, 2018

Commits on Dec 19, 2018

Commits on Dec 20, 2018

Switch to `npm ci` as the install command
jtgeibel
committed

Commits on Dec 22, 2018