Require rust-features check (#12796)

* Typo

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Move rust feature check to docker and require not to fail

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Add .docker-env

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Move test-rust-features check back to kubernetes

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

substrate/client/offchain/src/api.rs

@@ -300,7 +300,7 @@ pub(crate) struct AsyncApi {
 }
 
 impl AsyncApi {
-	/// Creates new Offchain extensions API implementation an the asynchronous processing part.
+	/// Creates new Offchain extensions API implementation and the asynchronous processing part.
 	pub fn new(
 		network_provider: Arc<dyn NetworkProvider + Send + Sync>,
 		is_validator: bool,

substrate/scripts/ci/gitlab/pipeline/check.yml

@@ -40,7 +40,6 @@ test-rust-features:
   extends:
     - .kubernetes-env
     - .test-refs-no-trigger-prs-only
-  allow_failure:                   true
   script:
     - git clone
         --depth=1