Try fix

.github/workflows/check.yml

@@ -25,8 +25,7 @@ jobs:
 
       - name: Setup rust
         run: |
-          rustup install 1.89
-          rustup default 1.89
+          rustup update
           cargo install sqlx-cli cargo-machete
           cd sync-server
           sqlx database create --database-url sqlite://db.sqlite3

sync-server/rust-toolchain.toml

@@ -1,4 +1,4 @@
 [toolchain]
-channel = "1.89.0"
+channel = "nightly"
 targets = [ "x86_64-unknown-linux-gnu", "x86_64-unknown-linux-musl" ]
 profile = "default"

sync-server/src/app_state/cursors.rs

@@ -47,7 +47,7 @@ impl Cursors {
         all_device_cursors.retain(|c| &c.client_cursors.device_id != device_id);
         all_device_cursors.push(ClientCursorsWithTimeToLive::new(ClientCursors {
             user_name,
-            device_id: device_id.to_string(),
+            device_id: device_id.clone(),
             documents_with_cursors: document_to_cursors,
         }));
 

sync-server/src/server/device_id_header.rs

@@ -26,7 +26,7 @@ impl Header for DeviceIdHeader {
     where
         E: Extend<HeaderValue>,
     {
-        let value = HeaderValue::from_static(Box::leak(self.0.to_string().into_boxed_str()));
+        let value = HeaderValue::from_static(Box::leak(self.0.clone().into_boxed_str()));
 
         values.extend(std::iter::once(value));
     }