diff --git a/.circleci/config.yml b/.circleci/config.yml
index e56185270..5e1583927 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -103,6 +103,29 @@ jobs:
           environment:
             RUST_BACKTRACE: 1
           command: cargo test --verbose --frozen
+    
+  test_all_features:
+    docker:
+      - image: rust:latest
+    working_directory: /mnt/crate
+    steps:
+      - checkout
+      - attach_workspace:
+          at: /mnt/crate
+      - restore_cache:
+          keys:
+            - cargo-v3-{{ checksum "Cargo.toml" }}-{{ checksum "Cargo.lock" }}
+      - run:
+          name: Print version information
+          command: rustc --version; cargo --version
+      - run:
+          name: Build
+          command: cargo build --tests --verbose --frozen -p chain-impl-mockchain --all-features
+      - run:
+          name: Test
+          environment:
+            RUST_BACKTRACE: 1
+          command: cargo test --verbose --frozen -p chain-impl-mockchain --all-features
 
 workflows:
   version: 2
@@ -122,3 +145,7 @@ workflows:
           requires:
             #- rustfmt
             - cargo_fetch
+      - test_mockchain_all_features:
+          requires:
+            #- rustfmt
+            - cargo_fetch
diff --git a/chain-impl-mockchain/src/block/mod.rs b/chain-impl-mockchain/src/block/mod.rs
index 6baf5364b..3f7acff3a 100644
--- a/chain-impl-mockchain/src/block/mod.rs
+++ b/chain-impl-mockchain/src/block/mod.rs
@@ -177,20 +177,3 @@ impl property::HasHeader for Block {
         self.header.clone()
     }
 }
-
-#[cfg(test)]
-#[cfg(feature = "with-bench")]
-mod bench {
-    use test::Bencher;
-
-    /*
-    #[bench]
-    pub fn serialization(&b: &mut Bencher) -> Self {
-        let bc = BlockContent::new();
-
-        b.iter(|| {
-
-        })
-    }
-    */
-}