project: use nightly in CI

The `rustfmt` configuration uses unstable features.
2020-03-08 17:26:42 +01:00 · 2020-03-08 17:26:42 +01:00 · 1eeedf3d7f
parent 01c21c352d
commit 1eeedf3d7f
1 changed files with 1 additions and 1 deletions
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@ -1,5 +1,5 @@
 # Official language image.
-image: 'rust:latest'
+image: 'rustlang/rust:nightly'
 stages:
  - lint