Give up on entities being Send and Sync

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

zed/src/chat_panel.rs

@@ -1,9 +1,10 @@
 use super::channel::{Channel, ChannelList};
-use gpui::{Entity, ModelHandle, View};
+use gpui::{elements::*, Entity, ModelHandle, View};
 
 pub struct ChatPanel {
     channel_list: ModelHandle<ChannelList>,
     active_channel: Option<ModelHandle<Channel>>,
+    messages: ListState,
 }
 
 pub enum Event {}

zed/src/test.rs

@@ -169,7 +169,7 @@ pub fn build_app_state(cx: &AppContext) -> Arc<AppState> {
 
 pub struct Observer<T>(PhantomData<T>);
 
-impl<T: 'static + Send + Sync> Entity for Observer<T> {
+impl<T: 'static> Entity for Observer<T> {
     type Event = ();
 }
 

zed/src/workspace.rs

@@ -192,7 +192,7 @@ pub trait ItemHandle: Send + Sync {
     fn downgrade(&self) -> Box<dyn WeakItemHandle>;
 }
 
-pub trait WeakItemHandle: Send + Sync {
+pub trait WeakItemHandle {
     fn file<'a>(&'a self, cx: &'a AppContext) -> Option<&'a File>;
     fn add_view(
         &self,
@@ -203,7 +203,7 @@ pub trait WeakItemHandle: Send + Sync {
     fn alive(&self, cx: &AppContext) -> bool;
 }
 
-pub trait ItemViewHandle: Send + Sync {
+pub trait ItemViewHandle {
     fn title(&self, cx: &AppContext) -> String;
     fn entry_id(&self, cx: &AppContext) -> Option<(usize, Arc<Path>)>;
     fn boxed_clone(&self) -> Box<dyn ItemViewHandle>;