chore(ci): try installing toolchains separately again to see if it fi…

…xes an issue

.github/workflows/ci.yml

@@ -70,16 +70,25 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938 # v4.2.0
 
-      - name: Install Rust nightly and ${{ matrix.toolchain }}
+      - name: Install Rust nightly
         uses: actions-rust-lang/setup-rust-toolchain@11df97af8e8102fd60b60a77dfbf58d40cd843b8 # v1.10.1
         with:
-          toolchain: nightly,${{ matrix.toolchain }}
+          toolchain: nightly
+          cache: false
+          matcher: false
+          rustflags: ''
+          override: false
+
+      - name: Install Rust  ${{ matrix.toolchain }}
+        uses: actions-rust-lang/setup-rust-toolchain@11df97af8e8102fd60b60a77dfbf58d40cd843b8 # v1.10.1
+        with:
+          toolchain: ${{ matrix.toolchain }}
           cache: false
 
       - name: Rust Cache
         uses: Swatinem/rust-cache@23bce251a8cd2ffc3c1075eaa2367cf899916d84 # v2.7.3
         with:
-          prefix-key: v7-rust
+          prefix-key: v9-rust
           key: all-features-${{ matrix.all-features }}-msrv-pins-files-${{ hashFiles('**/msrv-pins.toml') }}
           cache-on-failure: true