Switch to clippy nightly

Should be reverted once rust-lang/rust-clippy#10502
is released in a stable `clippy`.

.github/workflows/ci.yaml

@@ -49,17 +49,25 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Install Rust Toolchain Components
+    - name: Install rustfmt
       uses: actions-rs/toolchain@v1
       with:
-        components: clippy, rustfmt
+        components: rustfmt
         override: true
         toolchain: stable
 
+    - name: Install clippy nightly
+      uses: actions-rs/toolchain@v1
+      with:
+        components: clippy
+        toolchain: nightly
+
     - uses: Swatinem/rust-cache@v2
+      with:
+        key: "clippy-nightly"
 
     - name: Clippy
-      run: cargo clippy --all --all-targets
+      run: cargo +nightly clippy --all --all-targets
 
     - name: Format
       run: cargo fmt --all -- --check

justfile

@@ -15,10 +15,10 @@ fmt:
   cargo fmt
 
 clippy:
-  cargo clippy --all --all-targets -- -D warnings
+  cargo +nightly clippy --all --all-targets -- -D warnings
 
 lclippy:
-  cargo lclippy --all --all-targets -- -D warnings
+  cargo +nightly lclippy --all --all-targets -- -D warnings
 
 deploy branch chain domain:
   ssh root@{{domain}} "mkdir -p deploy \