remove: needless clone

src/main.rs

@@ -1,9 +1,10 @@
+// dead rust-lang/rustfmt/pull/5394 :(
 #![feature(
     decl_macro,
     duration_constructors,
     never_type,
     once_cell_try,
-    seek_stream_len,
+    seek_stream_len
 )]
 #![allow(clippy::future_not_send)] // will get to fix these later
 

src/server/caches/mime.rs

@@ -16,11 +16,11 @@ pub enum NewCookieError {
     // MimeDBPath(#[from] magic::cookie::InvalidDatabasePathError),
 }
 
-pub struct Mime {
-    magic_dbs: magic::cookie::DatabasePaths,
+pub struct Mime<'a> {
+    magic_dbs: &'a magic::cookie::DatabasePaths,
 }
 
-impl Mime {
+impl<'a> Mime<'a> {
     thread_local! {
         static COOKIE_CELL: OnceCell<Cookie<cookie::Load>> = const { OnceCell::new() };
     }
@@ -32,7 +32,7 @@ impl Mime {
         Self::COOKIE_CELL.with(|cookie| {
             let may_cookie = cookie.get_or_try_init::<_, NewCookieError>(move || {
                 let cookie = magic::Cookie::open(magic::cookie::Flags::MIME)?;
-                Ok(cookie.load(&self.magic_dbs)?)
+                Ok(cookie.load(self.magic_dbs)?)
             });
 
             match may_cookie {
@@ -43,7 +43,7 @@ impl Mime {
     }
 
     #[must_use]
-    pub const fn new(magic_dbs: magic::cookie::DatabasePaths) -> Self {
+    pub const fn new(magic_dbs: &'a magic::cookie::DatabasePaths) -> Self {
         Self { magic_dbs }
     }
 

src/server/caches/mod.rs

@@ -28,7 +28,7 @@ pub struct AppCache<'a> {
     // FIXME: blocks
     user_cache: UsersCache,
     // FIXME: blocks
-    magic_mime_cookie: Mime,
+    magic_mime_cookie: Mime<'a>,
 
     /// MUST only contain users from an accepted group, we do not want to cache arbitrary usernames
     /// and blow memory up.
@@ -47,7 +47,7 @@ impl<'a> AppCache<'a> {
     /// If weighter's usize doesn't fit in its u32
     #[must_use]
     pub fn new(
-        magic_dbs: magic::cookie::DatabasePaths,
+        magic_dbs: &'a magic::cookie::DatabasePaths,
         only_groups: &'a [crate::serdes::Group],
     ) -> Self {
         Self {

src/server/mod.rs

@@ -19,7 +19,7 @@ pub async fn start_app(args: crate::args::Args, config: crate::conf::Config) ->
     let config = Box::leak(Box::new(config));
 
     let cache = caches::AppCache::new(
-        config.unix.magic_paths.clone(),
+        &config.unix.magic_paths,
         &config.unix.groups,
     );