Bump MSRV to 1.64

.github/workflows/ci.yml

@@ -73,7 +73,7 @@ jobs:
         run: target/debug/xtask ci lint
 
   msrv:
-    name: Rust 1.62 / ${{ matrix.name }}
+    name: Rust 1.64 / ${{ matrix.name }}
     needs: xtask
     runs-on: ubuntu-latest
     strategy:
@@ -98,11 +98,11 @@ jobs:
       - name: Checkout repo
         uses: actions/checkout@v2
 
-      - name: Install rust 1.62 toolchain
+      - name: Install rust 1.64 toolchain
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: "1.62"
+          toolchain: "1.64"
 
       # Used to compile xtask
       - name: Install rust stable toolchain
@@ -117,7 +117,7 @@ jobs:
           # A stable compiler update should automatically not reuse old caches.
           # Add the MSRV as a stable cache key too so bumping it also gets us a
           # fresh cache.
-          sharedKey: msrv1.62
+          sharedKey: msrv1.64
 
       - name: Get xtask
         uses: actions/cache@v3