update rust toolchain

It comes with a bunch of new lints (yay!) so I fixed them all so CI will
keep working.

Also apparently something about linking changed because I had to change
the checks for deciding the linker flags for static x86_64 builds to
keep working.

.gitlab-ci.yml

@@ -106,7 +106,7 @@ oci-image:aarch64-unknown-linux-musl:
 debian:x86_64-unknown-linux-gnu:
   stage: artifacts
   # See also `rust-toolchain.toml`
-  image: rust:1.70.0
+  image: rust:1.75.0
   script:
     - apt-get update && apt-get install -y --no-install-recommends libclang-dev
     - cargo install cargo-deb

Cargo.toml

@@ -10,7 +10,7 @@ version = "0.7.0-alpha"
 edition = "2021"
 
 # See also `rust-toolchain.toml`
-rust-version = "1.70.0"
+rust-version = "1.75.0"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 

flake.nix

@@ -39,7 +39,7 @@
         file = ./rust-toolchain.toml;
 
         # See also `rust-toolchain.toml`
-        sha256 = "sha256-gdYqng0y9iHYzYPAdkC/ka3DRny3La/S5G8ASj0Ayyc=";
+        sha256 = "sha256-SXRtAuO4IqNOQq+nLbrsDFbVk+3aVA8NNpSZsKlVH/8=";
       };
 
       builder = pkgs:
@@ -79,7 +79,11 @@
               #
               # [0]: https://github.com/NixOS/nixpkgs/blob/612f97239e2cc474c13c9dafa0df378058c5ad8d/pkgs/build-support/rust/lib/default.nix#L36-L39
               (
-                pkgs.stdenv.hostPlatform.isAarch64
+                (pkgs.stdenv.hostPlatform.isAarch64
+                    # Nixpkgs doesn't check for x86_64 here but we do, because I
+                    # observed a failure building statically for x86_64 without
+                    # including it here. Linkers are weird.
+                    || pkgs.stdenv.hostPlatform.isx86_64)
                   && pkgs.stdenv.hostPlatform.isStatic
                   && !pkgs.stdenv.isDarwin
                   && !pkgs.stdenv.cc.bintools.isLLVM

rust-toolchain.toml

@@ -10,7 +10,7 @@
 # If you're having trouble making the relevant changes, bug a maintainer.
 
 [toolchain]
-channel = "1.70.0"
+channel = "1.75.0"
 components = [
     # For rust-analyzer
     "rust-src",

src/api/client_server/media.rs

@@ -51,7 +51,7 @@ pub async fn create_content_route(
         .await?;
 
     Ok(create_content::v3::Response {
-        content_uri: mxc.try_into().expect("Invalid mxc:// URI"),
+        content_uri: mxc.into(),
         blurhash: None,
     })
 }

src/database/abstraction/persy.rs

@@ -116,7 +116,7 @@ impl KvTree for PersyTree {
         match iter {
             Ok(iter) => Box::new(iter.filter_map(|(k, v)| {
                 v.into_iter()
-                    .map(|val| ((*k).to_owned().into(), (*val).to_owned().into()))
+                    .map(|val| ((*k).to_owned(), (*val).to_owned()))
                     .next()
             })),
             Err(e) => {
@@ -142,7 +142,7 @@ impl KvTree for PersyTree {
             Ok(iter) => {
                 let map = iter.filter_map(|(k, v)| {
                     v.into_iter()
-                        .map(|val| ((*k).to_owned().into(), (*val).to_owned().into()))
+                        .map(|val| ((*k).to_owned(), (*val).to_owned()))
                         .next()
                 });
                 if backwards {
@@ -179,7 +179,7 @@ impl KvTree for PersyTree {
                     iter.take_while(move |(k, _)| (*k).starts_with(&owned_prefix))
                         .filter_map(|(k, v)| {
                             v.into_iter()
-                                .map(|val| ((*k).to_owned().into(), (*val).to_owned().into()))
+                                .map(|val| ((*k).to_owned(), (*val).to_owned()))
                                 .next()
                         }),
                 )

src/database/abstraction/sqlite.rs

@@ -33,7 +33,7 @@ impl Iterator for PreparedStatementIterator<'_> {
 struct NonAliasingBox<T>(*mut T);
 impl<T> Drop for NonAliasingBox<T> {
     fn drop(&mut self) {
-        unsafe { Box::from_raw(self.0) };
+        drop(unsafe { Box::from_raw(self.0) });
     }
 }
 

src/database/key_value/account_data.rs

@@ -123,13 +123,12 @@ impl service::account_data::Data for KeyValueDatabase {
             .take_while(move |(k, _)| k.starts_with(&prefix))
             .map(|(k, v)| {
                 Ok::<_, Error>((
-                    RoomAccountDataEventType::try_from(
+                    RoomAccountDataEventType::from(
                         utils::string_from_bytes(k.rsplit(|&b| b == 0xff).next().ok_or_else(
                             || Error::bad_database("RoomUserData ID in db is invalid."),
                         )?)
                         .map_err(|_| Error::bad_database("RoomUserData ID in db is invalid."))?,
-                    )
-                    .map_err(|_| Error::bad_database("RoomUserData ID in db is invalid."))?,
+                    ),
                     serde_json::from_slice::<Raw<AnyEphemeralRoomEvent>>(&v).map_err(|_| {
                         Error::bad_database("Database contains invalid account data.")
                     })?,

src/database/key_value/globals.rs

@@ -256,8 +256,8 @@ lasttimelinecount_cache: {lasttimelinecount_cache}\n"
             ..
         } = new_keys;
 
-        keys.verify_keys.extend(verify_keys.into_iter());
-        keys.old_verify_keys.extend(old_verify_keys.into_iter());
+        keys.verify_keys.extend(verify_keys);
+        keys.old_verify_keys.extend(old_verify_keys);
 
         self.server_signingkeys.insert(
             origin.as_bytes(),

src/database/key_value/rooms/short.rs

@@ -157,10 +157,9 @@ impl service::rooms::short::Data for KeyValueDatabase {
             .ok_or_else(|| Error::bad_database("Invalid statekey in shortstatekey_statekey."))?;
 
         let event_type =
-            StateEventType::try_from(utils::string_from_bytes(eventtype_bytes).map_err(|_| {
+            StateEventType::from(utils::string_from_bytes(eventtype_bytes).map_err(|_| {
                 Error::bad_database("Event type in shortstatekey_statekey is invalid unicode.")
-            })?)
-            .map_err(|_| Error::bad_database("Event type in shortstatekey_statekey is invalid."))?;
+            })?);
 
         let state_key = utils::string_from_bytes(statekey_bytes).map_err(|_| {
             Error::bad_database("Statekey in shortstatekey_statekey is invalid unicode.")

src/database/key_value/users.rs

@@ -146,10 +146,9 @@ impl service::users::Data for KeyValueDatabase {
         self.userid_avatarurl
             .get(user_id.as_bytes())?
             .map(|bytes| {
-                let s = utils::string_from_bytes(&bytes)
-                    .map_err(|_| Error::bad_database("Avatar URL in db is invalid."))?;
-                s.try_into()
+                utils::string_from_bytes(&bytes)
                     .map_err(|_| Error::bad_database("Avatar URL in db is invalid."))
+                    .map(Into::into)
             })
             .transpose()
     }

src/service/globals/mod.rs

@@ -128,7 +128,7 @@ impl Resolve for Resolver {
             .expect("lock should not be poisoned")
             .get(name.as_str())
             .and_then(|(override_name, port)| {
-                override_name.get(0).map(|first_name| {
+                override_name.first().map(|first_name| {
                     let x: Box<dyn Iterator<Item = SocketAddr> + Send> =
                         Box::new(iter::once(SocketAddr::new(*first_name, *port)));
                     let x: Resolving = Box::pin(future::ready(Ok(x)));

src/service/pdu.rs

@@ -385,7 +385,7 @@ impl PartialEq for PduEvent {
 }
 impl PartialOrd for PduEvent {
     fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-        self.event_id.partial_cmp(&other.event_id)
+        Some(self.cmp(other))
     }
 }
 impl Ord for PduEvent {

src/service/rooms/timeline/mod.rs

@@ -90,18 +90,6 @@ impl Ord for PduCount {
         }
     }
 }
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn comparisons() {
-        assert!(PduCount::Normal(1) < PduCount::Normal(2));
-        assert!(PduCount::Backfilled(2) < PduCount::Backfilled(1));
-        assert!(PduCount::Normal(1) > PduCount::Backfilled(1));
-        assert!(PduCount::Backfilled(1) < PduCount::Normal(1));
-    }
-}
 
 pub struct Service {
     pub db: &'static dyn Data,
@@ -1208,3 +1196,16 @@ impl Service {
         Ok(())
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn comparisons() {
+        assert!(PduCount::Normal(1) < PduCount::Normal(2));
+        assert!(PduCount::Backfilled(2) < PduCount::Backfilled(1));
+        assert!(PduCount::Normal(1) > PduCount::Backfilled(1));
+        assert!(PduCount::Backfilled(1) < PduCount::Normal(1));
+    }
+}

src/service/sending/mod.rs

@@ -131,7 +131,7 @@ impl Service {
         for (key, outgoing_kind, event) in self.db.active_requests().filter_map(|r| r.ok()) {
             let entry = initial_transactions
                 .entry(outgoing_kind.clone())
-                .or_insert_with(Vec::new);
+                .or_default();
 
             if entry.len() > 30 {
                 warn!(

src/service/users/mod.rs

@@ -138,12 +138,18 @@ impl Service {
             cached.lists.insert(list_id.clone(), list.clone());
         }
 
-        cached
-            .subscriptions
-            .extend(request.room_subscriptions.clone().into_iter());
-        request
-            .room_subscriptions
-            .extend(cached.subscriptions.clone().into_iter());
+        cached.subscriptions.extend(
+            request
+                .room_subscriptions
+                .iter()
+                .map(|(k, v)| (k.clone(), v.clone())),
+        );
+        request.room_subscriptions.extend(
+            cached
+                .subscriptions
+                .iter()
+                .map(|(k, v)| (k.clone(), v.clone())),
+        );
 
         request.extensions.e2ee.enabled = request
             .extensions