diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1bd7ea46..4b05070e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,7 +33,7 @@ jobs:
           components: rustfmt
       - run: cargo fmt --all -- --check
 
-  # Check clippy.  This doesn't check ARM though.
+  # Check clippy.  Note that this doesn't check ARM.
   clippy:
     runs-on: ${{ matrix.os }}
     strategy:
@@ -171,6 +171,8 @@ jobs:
           override: true
           target: ${{ matrix.triple.target }}
 
+      - uses: Swatinem/rust-cache@v1
+
       - name: Check
         uses: actions-rs/cargo@v1
         with:
@@ -178,6 +180,7 @@ jobs:
           args: --all-targets --verbose --target=${{ matrix.triple.target }} --no-default-features
           use-cross: ${{ matrix.triple.cross }}
 
+  # Run tests on a subset of platforms
   tests:
     needs: [check]
     name: Test ${{ matrix.os }}
@@ -199,6 +202,8 @@ jobs:
           toolchain: stable
           override: true
 
+      - uses: Swatinem/rust-cache@v1
+
       - name: Run tests
         run: cargo test --no-fail-fast
         env:
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 5d567693..a006e543 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -37,6 +37,7 @@
     "SEGV",
     "SIGTERM",
     "STKFLT",
+    "Swatinem",
     "TEBI",
     "TERA",
     "TSTP",