nix: update to rust-1.65

Update to rust-1.65[0].

All hail our new GATs overlord!

[0]: https://blog.rust-lang.org/2022/11/03/Rust-1.65.0.html

Signed-off-by: Fintan Halpenny <fintan.halpenny@gmail.com>
X-Clacks-Overhead: GNU Terry Pratchett

link-git/src/odb/index.rs

@@ -251,7 +251,7 @@ fn discover(pack_dir: impl AsRef<Path>) -> Result<im::Vector<Arc<pack::Index>>,
     let pack_dir = pack_dir.as_ref();
     let pack_dir_disp = pack_dir.display();
     trace!("discovering packs at {}", pack_dir_disp);
-    match fs::read_dir(&pack_dir) {
+    match fs::read_dir(pack_dir) {
         Ok(iter) => {
             let mut paths = Vec::new();
             for entry in iter {

link-git/src/protocol/upload_pack.rs

@@ -149,7 +149,7 @@ where
                 )
                 .env("GIT_PROTOCOL", format!("version={}", protocol_version))
                 .env("GIT_NAMESPACE", namespace)
-                .args(&[
+                .args([
                     "-c",
                     "uploadpack.allowanysha1inwant=true",
                     "-c",

link-git/src/protocol/upload_pack/legacy.rs

@@ -74,7 +74,7 @@ where
                 .arg(format!("uploadpack.hiderefs=!{}", r.as_bstr()));
         }
 
-        cmd.args(&[
+        cmd.args([
             "upload-pack",
             "--strict",
             "--timeout=5",