CI: test every crate with default features

.gitlab-ci.yml

@@ -318,6 +318,15 @@ integration-shadow:
     - amd64
     - tpa
 
+# TODO when this test passes on main, delete the allow_failures line
+every-crate:
+  stage: test
+  image: rust:latest
+  allow_failure: true
+  script:
+    - apt-get update && apt-get install -y python3-toml python-is-python3
+    - ./maint/every-crate
+
 matrix-test:
   stage: test
   image: rust:latest