build(push-next): run mutation tests

.forgejo/workflows/push-next.yml

@@ -13,10 +13,9 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-
-  checks:
+  build:
     runs-on: docker
-
+    
     strategy:
       matrix:
         toolchain:
@@ -37,7 +36,7 @@ jobs:
         uses: https://git.kemitix.net/kemitix/rust@v2.4.1
         with:
           args: ${{ matrix.toolchain.name }} cargo machete
-
+      
       - name: Format
         uses: https://git.kemitix.net/kemitix/rust@v2.4.1
         with:
@@ -57,3 +56,9 @@ jobs:
         uses: https://git.kemitix.net/kemitix/rust@v2.4.1
         with:
           args: ${{ matrix.toolchain.name }} cargo hack --feature-powerset test
+
+      - name: Mutations
+        uses: https://git.kemitix.net/kemitix/rust@v2.4.1
+        with:
+          args: ${{ matrix.toolchain.name }} cargo mutants -vV --in-place
+