Use macos-11.0

.github/workflows/ci.yml

@@ -58,7 +58,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-11.0]
         rust: [stable]
         make:
           - name: Clippy
@@ -70,10 +70,10 @@ jobs:
         include:
           - os: ubuntu-latest
             sccache-path: /home/runner/.cache/sccache
-          - os: macos-latest
+          - os: macos-11.0
             sccache-path: /Users/runner/Library/Caches/Mozilla.sccache
         exclude:
-          - os: macos-latest
+          - os: macos-11.0
             rust: stable
             make:
               name: Clippy
@@ -86,7 +86,7 @@ jobs:
       # SCCACHE_RECACHE: 1 # Uncomment this to clear cache, then comment it back out
     steps:
       - uses: actions/checkout@v2
-      - name: Install sccache (ubuntu-latest)
+      - name: Install sccache (ubuntu)
         if: matrix.os == 'ubuntu-latest'
         env:
           LINK: https://github.com/mozilla/sccache/releases/download
@@ -97,8 +97,8 @@ jobs:
           curl -L "$LINK/$SCCACHE_VERSION/$SCCACHE_FILE.tar.gz" | tar xz
           mv -f $SCCACHE_FILE/sccache $HOME/.local/bin/sccache
           echo "$HOME/.local/bin" >> $GITHUB_PATH
-      - name: Install sccache (macos-latest)
-        if: matrix.os == 'macos-latest'
+      - name: Install sccache (macos)
+        if: matrix.os == 'macos-11.0'
         run: brew install sccache
       - name: Install Rust ${{ matrix.rust }}
         uses: actions-rs/toolchain@v1