Run MSRV check on Windows CI

.github/workflows/bors.yml

@@ -226,6 +226,30 @@ jobs:
       - name: Execute build.sh
         run: LIBC_CI=1 TOOLCHAIN=${{ matrix.toolchain }} sh ./ci/build.sh
 
+  build_channels_windows:
+    name: Build Channels Windows
+    runs-on: windows-2019
+    env:
+      OS: windows
+    strategy:
+      fail-fast: true
+      matrix:
+        toolchain: [
+          1.19.0,
+          1.24.0,
+          1.25.0,
+          1.30.0,
+          stable,
+        ]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Self-update rustup
+        run: rustup self update
+        shell: bash
+      - name: Execute build.sh
+        run: LIBC_CI=1 TOOLCHAIN=${{ matrix.toolchain }} WIN_TARGET=${{ matrix.target }} sh ./ci/build.sh
+        shell: bash
+
   semver_linux:
     name: Semver Linux
     runs-on: ubuntu-20.04
@@ -283,6 +307,7 @@ jobs:
       docker_switch,
       build_channels_linux,
       build_channels_macos,
+      build_channels_windows,
       docs,
     ]
 
@@ -303,6 +328,7 @@ jobs:
       docker_switch,
       build_channels_linux,
       build_channels_macos,
+      build_channels_windows,
       docs,
     ]
 

ci/build.sh

@@ -161,6 +161,13 @@ RUST_NIGHTLY_APPLE_TARGETS="\
 aarch64-apple-darwin \
 "
 
+# Must start with `x86_64-pc-windows-msvc` first.
+RUST_NIGHTLY_WINDOWS_TARGETS="\
+x86_64-pc-windows-msvc \
+x86_64-pc-windows-gnu \
+i686-pc-windows-msvc \
+"
+
 # The targets are listed here alphabetically
 TARGETS=""
 case "${OS}" in
@@ -189,6 +196,10 @@ case "${OS}" in
             TARGETS="${TARGETS} ${RUST_NIGHTLY_APPLE_TARGETS}"
         fi
 
+        ;;
+    windows*)
+        TARGETS=${RUST_NIGHTLY_WINDOWS_TARGETS}
+
         ;;
     *)
         ;;
@@ -196,7 +207,12 @@ esac
 
 for TARGET in $TARGETS; do
     if echo "$TARGET"|grep -q "$FILTER"; then
-        test_target build "$TARGET"
+        if [ "${OS}" = "windows" ]; then
+            TARGET="$TARGET" sh ./ci/install-rust.sh
+            test_target build "$TARGET"
+        else
+            test_target build "$TARGET"
+        fi
     fi
 done