[librsvg/librsvg-2.42: 5/17] gitlab-ci: Do not share the case between branches.

[Federico Mena Quintero <federico src gnome org>]

commit 471549976fbbb91c81fdfc948e79aabcb7e84d69
Author: Jordan Petridis <jordanpetridis protonmail com>
Date:   Fri Mar 2 11:44:24 2018 +0200

    gitlab-ci: Do not share the case between branches.

 .gitlab-ci.yml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 566f8cb8..3f39dd30 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -45,8 +45,10 @@ stages:
       - png_artifacts
 
   cache:
-    # Each job will have it's own cache
-    key: "$CI_JOB_NAME"
+    # JOB_NAME - Each job will have it's own cache
+    # COMMIT_REF_SLUG = Lowercase name of the branch
+    # ^ Keep diffrerent caches for each branch
+    key: "$CI_JOB_NAME-$CI_COMMIT_REF_SLUG"
     paths:
       - target/
       - .cargo_cache/