diff --git a/.github/actions/rust/action.yml b/.github/actions/rust/action.yml
index 5f788dc73f..dce4923678 100644
--- a/.github/actions/rust/action.yml
+++ b/.github/actions/rust/action.yml
@@ -1,14 +1,12 @@
 name: Install Rust
-description: Install Rust and sccache
+description: Install Rust and tools
 
 inputs:
   version:
     description: 'Rust toolchain version to install'
-    required: true
     default: 'stable'
   components:
     description: 'Rust components to install'
-    required: false
     default: ''
 
 runs:
@@ -25,7 +23,7 @@ runs:
       shell: pwsh
       run: Set-ExecutionPolicy Unrestricted -Scope Process; iex (iwr "https://raw.githubusercontent.com/cargo-bins/cargo-binstall/main/install-from-binstall-release.ps1").Content
 
-    - name: Install cargo-binstall (Windows)
+    - name: Install cargo-binstall (Linux & MacOS)
       if: runner.os != 'Windows'
       shell: bash
       run: curl -L --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/cargo-bins/cargo-binstall/main/install-from-binstall-release.sh | bash
@@ -34,8 +32,27 @@ runs:
       shell: bash
       run: cargo +${{ inputs.version }} binstall --no-confirm cargo-llvm-cov cargo-nextest flamegraph cargo-hack
 
-    - name: Use Rust cache
-      uses: Swatinem/rust-cache@v2
-      with:
-        cache-all-crates: "true"
-        cache-directories: "${{ github.workspace }}/dist"
+    # sccache slows CI down, so we leave it disabled.
+    # Leaving the steps below commented out, so we can re-evaluate enabling it later.
+    # - name: Use sccache
+    #   uses: mozilla-actions/sccache-action@v0.0.4
+
+    # - name: Enable sscache
+    #   shell: bash
+    #   run: |
+    #     if [ "${{ runner.os }}" = "Windows" ]; then
+    #       echo "CC=sccache cl" >> "$GITHUB_ENV"
+    #       echo "CXX=sccache cl" >> "$GITHUB_ENV"
+    #     else
+    #       echo "CC=sccache cc" >> "$GITHUB_ENV"
+    #       echo "CXX=sccache c++" >> "$GITHUB_ENV"
+    #     fi
+    #     echo "SCCACHE_GHA_ENABLED=true" >> "$GITHUB_ENV"
+    #     echo "RUSTC_WRAPPER=sccache" >> "$GITHUB_ENV"
+    #     echo "CARGO_INCREMENTAL=0" >> "$GITHUB_ENV"
+
+    # Ditto for rust-cache.
+    # - name: Use Rust cache
+    #   uses: Swatinem/rust-cache@v2
+    #   with:
+    #     cache-all-crates: "true"
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index ccea626867..5faa67bef9 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -41,12 +41,6 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Install Rust
-        uses: ./.github/actions/rust
-        with:
-          version: ${{ matrix.rust-toolchain }}
-          components: rustfmt, clippy, llvm-tools-preview
-
       - name: Install dependencies (Linux)
         if: runner.os == 'Linux'
         env:
@@ -97,6 +91,12 @@ jobs:
           # See https://github.com/ilammy/msvc-dev-cmd#name-conflicts-with-shell-bash
           rm /usr/bin/link.exe
 
+      - name: Install Rust
+        uses: ./.github/actions/rust
+        with:
+          version: ${{ matrix.rust-toolchain }}
+          components: rustfmt, clippy, llvm-tools-preview
+
       - name: Fetch and build NSS and NSPR
         uses: ./.github/actions/nss