Enable experimental Apple M1 cross builds and downgrade i686 musl to experimental

.github/workflows/release.yml

@@ -16,45 +16,60 @@ jobs:
           - linux-armhf-gnu
           - linux-arm64-gnu
           - mac-x86-64
+          - mac-arm64
           - windows-x86-64
         include:
           - name: linux-amd64-gnu
             os: ubuntu-latest
             target: x86_64-unknown-linux-gnu
             cross: false
+            experimental: false
 
           - name: linux-amd64-musl
             os: ubuntu-latest
             target: x86_64-unknown-linux-musl
             cross: true
+            experimental: false
 
           - name: linux-i686-musl
             os: ubuntu-latest
             target: i686-unknown-linux-musl
             cross: true
+            experimental: true
 
           - name: linux-armhf-gnu
             os: ubuntu-latest
             target: armv7-unknown-linux-gnueabihf
             cross: true
+            experimental: false
 
           - name: linux-arm64-gnu
             os: ubuntu-latest
             target: aarch64-unknown-linux-gnu
             cross: true
+            experimental: false
 
           - name: mac-x86-64
             os: macos-latest
             target: x86_64-apple-darwin
             cross: false
+            experimental: false
+
+          - name: mac-arm64
+            os: macos-latest
+            target: aarch64-apple-darwin
+            cross: true
+            experimental: true
 
           - name: windows-x86-64
             os: windows-latest
             target: x86_64-pc-windows-msvc
             cross: false
+            experimental: false
 
     name: Binaries for ${{ matrix.name }}
     runs-on: ${{ matrix.os }}
+    continue-on-error: ${{ matrix.experimental }}
 
     steps:
       - uses: actions/checkout@v2