squelch most clippy warnings in generated code

components/salsa-macro-rules/src/setup_tracked_fn.rs

@@ -69,6 +69,8 @@ macro_rules! setup_tracked_fn {
             _priv: std::convert::Infallible,
         }
 
+        // Suppress this clippy lint because we sometimes require `'db` where the ordinary Rust rules would not.
+        #[allow(clippy::needless_lifetimes)]
         $(#[$attr])*
         $vis fn $fn_name<$db_lt>(
             $db: &$db_lt dyn $Db,

components/salsa-macro-rules/src/setup_tracked_struct.rs

@@ -67,6 +67,8 @@ macro_rules! setup_tracked_struct {
             std::marker::PhantomData < & $db_lt salsa::plumbing::tracked_struct::Value < $Struct<'static> > >
         );
 
+        #[allow(clippy::all)]
+        #[allow(dead_code)]
         const _: () = {
             use salsa::plumbing as $zalsa;
             use $zalsa::tracked_struct as $zalsa_struct;

components/salsa-macros/src/update.rs

@@ -76,6 +76,7 @@ pub(crate) fn update_derive(input: syn::DeriveInput) -> syn::Result<TokenStream>
     let ident = &input.ident;
     let (impl_generics, ty_generics, where_clause) = input.generics.split_for_impl();
     let tokens = quote! {
+        #[allow(clippy::all)]
         unsafe impl #impl_generics salsa::Update for #ident #ty_generics #where_clause {
             unsafe fn maybe_update(#old_pointer: *mut Self, #new_value: Self) -> bool {
                 use ::salsa::plumbing::UpdateFallback as _;

tests/tracked_fn_read_own_specify.rs

@@ -17,7 +17,7 @@ struct MyTracked<'db> {
 }
 
 #[salsa::tracked]
-fn tracked_fn<'db>(db: &'db dyn Db, input: MyInput) -> u32 {
+fn tracked_fn(db: &dyn Db, input: MyInput) -> u32 {
     db.push_log(format!("tracked_fn({input:?})"));
     let t = MyTracked::new(db, input.field(db) * 2);
     tracked_fn_extra::specify(db, t, 2222);