CI: run a normal all-features-test

I think we do actually do this as part of the coverage job, but that's
not really very clear (and getting the report in that job may be
annoying).

We also do it on nightly as part of the nightly test, but that's an
"allow_fail".

.gitlab-ci.yml

@@ -318,6 +318,23 @@ integration-shadow:
     - amd64
     - tpa
 
+rust-latest-test-all-features:
+  stage: test
+  image: rust:latest
+  script:
+    - rustup show
+    - cargo build --target x86_64-unknown-linux-gnu --locked --workspace --all-features --all-targets
+    - cargo test --target x86_64-unknown-linux-gnu --locked --workspace --all-features
+  after_script:
+    - ./maint/preserve target/x86_64-unknown-linux-gnu/debug/arti target/x86_64-unknown-linux-gnu/release/arti-bench
+    - cargo clean
+  artifacts:
+    paths:
+      - artifacts
+    expire_in: 1 hours
+  tags:
+    - amd64
+
 every-crate:
   stage: test
   image: rust:latest