[librsvg: 1/2] Enable clippy on the CI

[Jordan Petridis <jpetridis src gnome org>]

commit e7d846d7f81214a9b3ed477d43435d2c9929c503
Author: Sven Neumann <sven svenfoo org>
Date:   Thu Aug 27 17:22:14 2020 +0200

    Enable clippy on the CI
    
    Use the openSUSE Tumbleweed image to run clippy.

 .gitlab-ci.yml | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 54214be1..f814cae6 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -16,8 +16,6 @@ variables:
   RUSTC_1_27:                "registry.gitlab.gnome.org/gnome/librsvg-oci-images/rustc:1.27"
   RUSTC_1_28:                "registry.gitlab.gnome.org/gnome/librsvg-oci-images/rustc:1.28"
 
-  CLIPPY_NIGHTLY:            "registry.gitlab.gnome.org/gnome/librsvg-oci-images/clippy:nightly"
-
 stages:
   - test
   - lint
@@ -150,8 +148,8 @@ debian_i386:testing:
 # STAGE 1 LINTS
 ########################################################################
 
-# Configure and run rustfmt on nightly
-# Exits and builds fails on bad format
+# Configure and run rustfmt
+# Exits and build fails on bad format
 rustfmt:
   image: $AMD64_OPENSUSE_TUMBLEWEED
   stage: lint
@@ -160,16 +158,15 @@ rustfmt:
     - cargo fmt --version
     - sudo cargo fmt --all -- --check
 
-# Configure and run clippy on nightly
+# Configure and run clippy
 # Only fails on errors atm.
 clippy:
-  image: $CLIPPY_NIGHTLY
+  image: $AMD64_OPENSUSE_TUMBLEWEED
   stage: lint
   script:
     - rustc --version && cargo --version
-    - cargo install clippy --force
-    - cargo clippy --all
-  when: manual
+    - cargo clippy --version
+    - sudo cargo clippy --all
 
 tarball:
   image: $AMD64_OPENSUSE_TUMBLEWEED