Generate delegate spam in code actions

[Maximkaaa]

I am not sure this is a problem with rust-analyzer, but maybe someone would have an idea where to look for a solution...

I am using rust-analyzer (2025-01-28) in NeoVim through nvim-lspconfig. All worked fine until yesterday when I started to get one million suggested actions of type generate delegate whenever I use code actions:

1: Import `std::path::Path`                                                                                                                                                                                                                                           
2: Qualify as `std::path::Path`                                                                                                                                                                                                                                       
3: Generate delegate trait impl `Context` for `pem_path`                                                                                                                                                                                                              
4: Generate delegate trait impl `context::private::Sealed` for `pem_path`                                                                                                                                                                                             
5: Generate delegate trait impl `unreachable::UncheckedOptionExt` for `pem_path`                                                                                                                                                                                      
6: Generate delegate trait impl `codec::Encode` for `pem_path`                                                                                                                                                                                                        
7: Generate delegate trait impl `max_encoded_len::MaxEncodedLen` for `pem_path`                                                                                                                                                                                       
8: Generate delegate trait impl `mem_tracking::DecodeWithMemTracking` for `pem_path`                                                                                                                                                                                  
9: Generate delegate trait impl `de::DeserializeAs` for `pem_path`                                                                                                                                                                                                    
10: Generate delegate trait impl `ser::SerializeAs` for `pem_path`                                                                                                                                                                                                    
11: Generate delegate trait impl `yoke::CloneableCart` for `pem_path`                                                                                                                                                                                                 
12: Generate delegate trait impl `Pretty` for `pem_path`                                                                                                                                                                                                              
13: Generate delegate trait impl `Value` for `pem_path`                                                                                                                                                                                                               
14: Generate delegate trait impl `CanonicalSerialize` for `pem_path`                                                                                                                                                                                                  
15: Generate delegate trait impl `CanonicalSerialize` for `pem_path`                                                                                                                                                                                                  
16: Generate delegate trait impl `clear::Clear` for `pem_path`                                                                                                                                                                                                        
17: Generate delegate trait impl `builder::resettable::IntoResettable` for `pem_path`                                                                                                                                                                                 
18: Generate delegate trait impl `builder::resettable::IntoResettable` for `pem_path`                                                                                                                                                                                 
19: Generate delegate trait impl `builder::resettable::IntoResettable` for `pem_path`                                                                                                                                                                                 
20: Generate delegate trait impl `builder::resettable::IntoResettable` for `pem_path`                                                                                                                                                                                 
21: Generate delegate trait impl `builder::resettable::IntoResettable` for `pem_path`                                                                                                                                                                                 
22: Generate delegate trait impl `builder::resettable::IntoResettable` for `pem_path`                                                                                                                                                                                 
23: Generate delegate trait impl `builder::resettable::IntoResettable` for `pem_path`                                                                                                                                                                                 
24: Generate delegate trait impl `builder::resettable::IntoResettable` for `pem_path`                                                                                                                                                                                 
25: Generate delegate trait impl `traits::Encodable` for `pem_path`                                                                                                                                                                                                   
26: Generate delegate trait impl `ZeroizeOnDrop` for `pem_path`                                                                                                                                                                                                       
27: Generate delegate trait impl `Zeroize` for `pem_path`                                                                                                                                                                                                             
28: Generate delegate trait impl `marker::StructuralPartialEq` for `pem_path`                                                                                                                                                                                         
29: Generate delegate trait impl `fmt::Debug` for `pem_path`                                                                                                                                                                                                          
30: Generate delegate trait impl `marker::Copy` for `pem_path`                                                                                                                                                                                                        
31: Generate delegate trait impl `layer::Filter` for `pem_path`                                                                                                                                                                                                       
32: Generate delegate trait impl `ser::Serialize` for `pem_path`                                                                                                                                                                                                      
33: Generate delegate trait impl `io::IoHandlerExtension` for `pem_path`                                                                                                                                                                                              
34: Generate delegate trait impl `calls::Metadata` for `pem_path`                                                                                                                                                                                                     
35: Generate delegate trait impl `util::UncheckedOptionExt` for `pem_path`                                                                                                                                                                                            
36: Generate delegate trait impl `field::Value` for `pem_path`                                                                                                                                                                                                        
37: Generate delegate trait impl `sealed::Sealed` for `pem_path`                                                                                                                                                                                                      
38: Generate delegate trait impl `encode::Encode` for `pem_path`                                                                                                                                                                                                      
39: Generate delegate trait impl `encode::Encode` for `pem_path`                                                                                                                                                                                                      
40: Generate delegate trait impl `OptionExt` for `pem_path`                                                                                                                                                                                                           
41: Generate delegate trait impl `util::UncheckedOptionExt` for `pem_path`                                                                                                                                                                                            
42: Generate delegate trait impl `traits::Encodable` for `pem_path`                                                                                                                                                                                                   
43: Generate delegate trait impl `usage::type_params::UsesTypeParams` for `pem_path`                                                                                                                                                                                  
44: Generate delegate trait impl `usage::lifetimes::UsesLifetimes` for `pem_path`                                                                                                                                                                                     
45: Generate delegate trait impl `ule::encode::EncodeAsVarULE` for `pem_path`                                                                                                                                                                                         
46: Generate delegate trait impl `util::UnwrapUnchecked` for `pem_path`                                                                                                                                                                                               
47: Generate delegate trait impl `bytes::ToBytes` for `pem_path`                                                                                                                                                                                                      
48: Generate delegate trait impl `bytes::EncodeBytes` for `pem_path`                                                                                                                                                                                                  
49: Generate delegate trait impl `bytes::CborLenBytes` for `pem_path`                                                                                                                                                                                                 
50: Generate delegate trait impl `encode::CborLen` for `pem_path`                                                                                                                                                                                                     
51: Generate delegate trait impl `encode::Encode` for `pem_path`                                                                                                                                                                                                      
52: Generate delegate trait impl `ser::Serialize` for `pem_path`                                                                                                                                                                                                      
53: Generate a getter method                                                                                                                                                                                                                                          
54: Generate a mut getter method                                                                                                                                                                                                                                      
55: Generate a setter method                                                                                                                                                                                                                                          
56: Generate delegate for `pem_path.and()`                                                                                                                                                                                                                            
57: Generate delegate for `pem_path.and_then()`                                                                                                                                                                                                                       
58: Generate delegate for `pem_path.as_deref()`                                                                                                                                                                                                                       
59: Generate delegate for `pem_path.as_deref_mut()`                                                                                                                                                                                                                   
60: Generate delegate for `pem_path.as_mut()`                                                                                                                                                                                                                         
61: Generate delegate for `pem_path.as_mut_slice()`                                                                                                                                                                                                                   
62: Generate delegate for `pem_path.as_pin_mut()`                                                                                                                                                                                                                     
63: Generate delegate for `pem_path.as_pin_ref()`                                                                                                                                                                                                                     
-- More --                                          

Before that I would only get actions 1 and 2 which is the expected behavior.

I have a feeling that this issue is the result of me trying using Copilot yesterday. I've installed the copilot.lua plugin and worked a little with it. But I'm 90% certain that I didn't get this action spam at first. When it started and I got my suspicions for the copilot (especially considering it suggests to generate a lot of stuff), I have deactivated and then completely deleted the copilot plugin. After this didn't fix the issue, I removed the ~/.cache/nvim folder, but I still get the same behavior.

The reason I ask here is that AFAIK code actions list is requested from the LSP server, which is Rust Analyzer in this case. Correct me if I'm wrong.

Any ideas how to find the culprit or fix the issue would be greatly appreciated.

[Veykril]

So, this is technically expected behavior in that we do generate a billion of these code actions. The idea is that we have an lsp extension that groups them under one codeaction instead, but if the client doesn't support that, you end up with what you are seeing. I am confused that you are only running into this now as this code action has been like this for a year or more.

Either way, I believe, for this code action we should actually disable it if the client does not support the extension as it makes it unmanageable as you've shown.