fix: make clippy happy

flake.lock

@@ -1,5 +1,26 @@
 {
   "nodes": {
+    "fenix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1728109939,
+        "narHash": "sha256-g4kb34YbEbpeLXv6GNONjZtafFkfl9Cd8jTmuYYON8E=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "cdfd7bf3e3edaf9e3f6d1e397d3ee601e513613c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1720542800,
@@ -18,8 +39,26 @@
     },
     "root": {
       "inputs": {
+        "fenix": "fenix",
         "nixpkgs": "nixpkgs"
       }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1728064742,
+        "narHash": "sha256-tFvUGvqUZjES1yxYT2zEFiTAE0iQKYd+eWKX/6ZqeVw=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "5982d9c420d0dc90739171829f0d2e9c80d98979",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
+      }
     }
   },
   "root": "root",