fix workflow action

.github/workflows/long_running.yml

@@ -3,22 +3,29 @@ name: Long running tests
 on:
   push:
     branches: [ main ]
+  pull_request:
+    branches: [ main ]
 
 env:
   CARGO_TERM_COLOR: always
   NUM_FUNCTIONAL_TEST_ITERATIONS: 20000
 
 jobs:
-  functional_test_unsorted:
+  test:
+
     runs-on: ubuntu-latest
+
     steps:
     - uses: actions/checkout@v3
+    - name: Install stable
+      uses: actions-rs/toolchain@v1
+      with:
+          toolchain: stable
+          override: true
+          components: rustfmt, clippy
+
     - name: Run indexing_unsorted
       run: cargo test indexing_unsorted -- --ignored
-  functional_test_sorted:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v3
     - name: Run indexing_sorted
       run: cargo test indexing_sorted -- --ignored