Do not cache untracked files

.gitlab-ci.yml

@@ -12,7 +12,6 @@ variables:
 # Cache rust/cargo/build artifacts
 cache:
   key: "$CI_PIPELINE_ID-$RUST_VERSION"
-  untracked: true
   paths:
     - /usr/local/cargo/registry/
     - /usr/local/rustup/toolchains/