Update GitHub Actions workflows: remove redundant branch from docs-and-testcov and enhance Rust setup in run-unit-tests

.github/workflows/docs-and-testcov.yml

@@ -6,7 +6,7 @@ concurrency:
 
 on:
   push:
-    branches: [main, update_docs_workflow]
+    branches: [main]
   # pull_request:
   #   branches: [main]
   workflow_dispatch:

.github/workflows/run-benchmarks-self-hosted.yml

@@ -1,29 +0,0 @@
-name: Run benchmarks
-
-on:
-  workflow_dispatch:
-  push:
-    branches:
-      - main
-
-jobs:
-  run-benchmarks:
-    runs-on: self-hosted-linux
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Install Rust
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-
-      - name: Run benchmarks
-        run: cargo bench --features bench
-
-      - name: Upload benchmark reports
-        uses: actions/upload-artifact@v4
-        with:
-          name: benchmark-reports-${{ github.sha }}
-          path: ./target/criterion/

.github/workflows/run-unit-tests.yml

@@ -39,8 +39,11 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - name: Install Rust
-        run: rustup update stable
+      - name: Set up Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
       - name: Install cargo-llvm-cov
         uses: taiki-e/install-action@cargo-llvm-cov