upgrade to rust 1.91, fix new clippy errors

Author: syphar

rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.90.0"
+channel = "1.91.0"
 components = ["rustfmt", "clippy"]

src/web/releases.rs

@@ -53,20 +53,15 @@ pub struct Release {
     pub(crate) href: Option<&'static str>,
 }
 
-#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+#[derive(Debug, Copy, Clone, PartialEq, Eq, Default)]
 pub(crate) enum Order {
-    ReleaseTime, // this is default order
+    #[default]
+    ReleaseTime,
     GithubStars,
     RecentFailures,
     FailuresByGithubStars,
 }
 
-impl Default for Order {
-    fn default() -> Self {
-        Self::ReleaseTime
-    }
-}
-
 pub(crate) async fn get_releases(
     conn: &mut sqlx::PgConnection,
     page: i64,