Win7 tests

Signed-off-by: Joe Richey <[email protected]>

Author: josephlr

.github/workflows/tests.yml

@@ -153,12 +153,29 @@ jobs:
         ]
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@master
+      - uses: dtolnay/rust-toolchain@stable
         with:
           toolchain: ${{ matrix.toolchain }}
       - uses: Swatinem/rust-cache@v2
       - run: cargo test --features=std
 
+  windows7:
+    name: Windows 7 Test
+    runs-on: windows-2022
+    strategy:
+      matrix:
+        target: [
+          i686-win7-windows-msvc,
+          x86_64-win7-windows-msvc,
+        ]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: rust-src
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo test --target=${{ matrix.target }} -Z build-std --features=std
+
   cross-tests:
     name: Cross Test
     runs-on: ubuntu-22.04