Update rust.yml

.github/workflows/rust.yml

@@ -2,18 +2,19 @@ name: rust
 on: [push, pull_request]
 jobs:
   build:
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macOS-latest, windows-latest]
-    runs-on: ${{ matrix.os }}
+#    strategy:
+#      matrix:
+#        os: [ubuntu-latest, macOS-latest, windows-latest]
+#    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - run: rustup update stable
       - name: Cache cargo build
         uses: actions/cache@v1
-        with:
-          path: target
-          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
+#        with:
+#          path: target
+#          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
       - run: rustup component add rustfmt
       - run: rustup component add clippy
       - run: cargo build --all-features