clippy too_many_arguments in #[tarpc_service]

[dan-da]

After some recent changes in my code I am seeing errors like this:

warning: this function has too many arguments (8/7)                       
   --> src/rpc_server.rs:158:1                                                                                                                       
    |                                                                                                                                                
158 | #[tarpc::service]                                                                                                                              
    | ^^^^^^^^^^^^^^^^^                                                                                                                              
    |                  
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_arguments                               
    = note: `#[warn(clippy::too_many_arguments)]` on by default                                                                                      
    = note: this warning originates in the attribute macro `tarpc::service` (in Nightly builds, run with -Z macro-backtrace for more info)``

If I place a #[allow(clippy::too_many_arguments)] above the #[tarpc::service] the warning still occurs. The only way I've found to silence it is to decorate the entire rpc_server module that contains the tarpc::service, which is not ideal..

I'm not certain but I'm guessing the problem now occurs because I added an additional argument to all RPC methods. Unfortunately removing args is not an option.