CI: run clippy

.gitlab-ci.yml

@@ -22,7 +22,16 @@ rustfmt:
     # so rustfmt does not yell about non-existent files or completely empty files
     - echo -e "" >> src/config.rs
     - echo -e "" >> src/static_resources.rs
-    - rustc -Vv && cargo -Vv
+    - rustc --version && cargo --version
     - cargo fmt --version
     - cargo fmt --all -- --color=always --check
 
+clippy:
+  image: rust:latest
+  before_script:
+  - rustup component add clippy
+  script:
+  - rustc --version && cargo --version
+  - cargo clippy --all-targets --all-features
+
+