Ignore non_local_definitions false positive in macro-generated impls

rust-lang/rust#121621

    warning: non-local `impl` definition, they should be avoided as they go against expectation
      --> tests/macros.rs:11:5
       |
    11 |     clone_trait_object!(Trait);
       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
       |
       = help: move this `impl` block outside the of the current function `test_plain`
       = note: an `impl` definition is non-local if it is nested inside an item and neither the type nor the trait are at the same nesting level as the `impl` block
       = note: one exception to the rule are anon-const (`const _: () = { ... }`) at top-level module and anon-const at the same nesting as the trait or type
       = note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <rust-lang/rust#120363>
       = note: the macro `$crate::__internal_clone_trait_object` may come from an old version of the `dyn_clone` crate, try updating your dependency with `cargo update -p dyn_clone`
       = note: `#[warn(non_local_definitions)]` on by default
       = note: this warning originates in the macro `$crate::__internal_clone_trait_object` which comes from the expansion of the macro `clone_trait_object` (in Nightly builds, run with -Z macro-backtrace for more info)

    warning: non-local `impl` definition, they should be avoided as they go against expectation
      --> tests/macros.rs:11:5
       |
    11 |     clone_trait_object!(Trait);
       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
       |
       = help: move this `impl` block outside the of the current function `test_plain`
       = note: an `impl` definition is non-local if it is nested inside an item and neither the type nor the trait are at the same nesting level as the `impl` block
       = note: one exception to the rule are anon-const (`const _: () = { ... }`) at top-level module and anon-const at the same nesting as the trait or type
       = note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <rust-lang/rust#120363>
       = note: the macro `$crate::__internal_clone_trait_object` may come from an old version of the `dyn_clone` crate, try updating your dependency with `cargo update -p dyn_clone`
       = note: this warning originates in the macro `$crate::__internal_clone_trait_object` which comes from the expansion of the macro `clone_trait_object` (in Nightly builds, run with -Z macro-backtrace for more info)

    warning: non-local `impl` definition, they should be avoided as they go against expectation
      --> tests/macros.rs:23:5
       |
    23 |     clone_trait_object!(<T> Trait<T>);
       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       |
       = help: move this `impl` block outside the of the current function `test_type_parameter`
       = note: an `impl` definition is non-local if it is nested inside an item and neither the type nor the trait are at the same nesting level as the `impl` block
       = note: one exception to the rule are anon-const (`const _: () = { ... }`) at top-level module and anon-const at the same nesting as the trait or type
       = note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <rust-lang/rust#120363>
       = note: the macro `$crate::__internal_clone_trait_object` may come from an old version of the `dyn_clone` crate, try updating your dependency with `cargo update -p dyn_clone`
       = note: this warning originates in the macro `$crate::__internal_clone_trait_object` which comes from the expansion of the macro `clone_trait_object` (in Nightly builds, run with -Z macro-backtrace for more info)

    warning: non-local `impl` definition, they should be avoided as they go against expectation
      --> tests/macros.rs:32:5
       |
    32 |     clone_trait_object!(<T: PartialEq<T>, U> Trait<T, U>);
       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       |
       = help: move this `impl` block outside the of the current function `test_generic_bound`
       = note: an `impl` definition is non-local if it is nested inside an item and neither the type nor the trait are at the same nesting level as the `impl` block
       = note: one exception to the rule are anon-const (`const _: () = { ... }`) at top-level module and anon-const at the same nesting as the trait or type
       = note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <rust-lang/rust#120363>
       = note: the macro `$crate::__internal_clone_trait_object` may come from an old version of the `dyn_clone` crate, try updating your dependency with `cargo update -p dyn_clone`
       = note: this warning originates in the macro `$crate::__internal_clone_trait_object` which comes from the expansion of the macro `clone_trait_object` (in Nightly builds, run with -Z macro-backtrace for more info)

    warning: non-local `impl` definition, they should be avoided as they go against expectation
      --> tests/macros.rs:45:5
       |
    45 |     clone_trait_object!(<T> Trait<T> where T: Clone);
       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       |
       = help: move this `impl` block outside the of the current function `test_where_clause`
       = note: an `impl` definition is non-local if it is nested inside an item and neither the type nor the trait are at the same nesting level as the `impl` block
       = note: one exception to the rule are anon-const (`const _: () = { ... }`) at top-level module and anon-const at the same nesting as the trait or type
       = note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <rust-lang/rust#120363>
       = note: the macro `$crate::__internal_clone_trait_object` may come from an old version of the `dyn_clone` crate, try updating your dependency with `cargo update -p dyn_clone`
       = note: this warning originates in the macro `$crate::__internal_clone_trait_object` which comes from the expansion of the macro `clone_trait_object` (in Nightly builds, run with -Z macro-backtrace for more info)

    warning: non-local `impl` definition, they should be avoided as they go against expectation
      --> tests/macros.rs:54:5
       |
    54 |     clone_trait_object!(<'a> Trait<'a>);
       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       |
       = help: move this `impl` block outside the of the current function `test_lifetime`
       = note: an `impl` definition is non-local if it is nested inside an item and neither the type nor the trait are at the same nesting level as the `impl` block
       = note: one exception to the rule are anon-const (`const _: () = { ... }`) at top-level module and anon-const at the same nesting as the trait or type
       = note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <rust-lang/rust#120363>
       = note: the macro `$crate::__internal_clone_trait_object` may come from an old version of the `dyn_clone` crate, try updating your dependency with `cargo update -p dyn_clone`
       = note: this warning originates in the macro `$crate::__internal_clone_trait_object` which comes from the expansion of the macro `clone_trait_object` (in Nightly builds, run with -Z macro-backtrace for more info)

Author: dtolnay

src/macros.rs

@@ -88,21 +88,28 @@ macro_rules! __internal_clone_trait_object {
 
     // The impl.
     (impl ($($generics:tt)*) ($($path:tt)*) ($($bound:tt)*)) => {
+        #[allow(unknown_lints, non_local_definitions)] // false positive: https://github.com/rust-lang/rust/issues/121621
         impl<'clone, $($generics)*> $crate::__private::Clone for $crate::__private::Box<dyn $($path)* + 'clone> where $($bound)* {
             fn clone(&self) -> Self {
                 $crate::clone_box(&**self)
             }
         }
+
+        #[allow(unknown_lints, non_local_definitions)] // false positive: https://github.com/rust-lang/rust/issues/121621
         impl<'clone, $($generics)*> $crate::__private::Clone for $crate::__private::Box<dyn $($path)* + $crate::__private::Send + 'clone> where $($bound)* {
             fn clone(&self) -> Self {
                 $crate::clone_box(&**self)
             }
         }
+
+        #[allow(unknown_lints, non_local_definitions)] // false positive: https://github.com/rust-lang/rust/issues/121621
         impl<'clone, $($generics)*> $crate::__private::Clone for $crate::__private::Box<dyn $($path)* + $crate::__private::Sync + 'clone> where $($bound)* {
             fn clone(&self) -> Self {
                 $crate::clone_box(&**self)
             }
         }
+
+        #[allow(unknown_lints, non_local_definitions)] // false positive: https://github.com/rust-lang/rust/issues/121621
         impl<'clone, $($generics)*> $crate::__private::Clone for $crate::__private::Box<dyn $($path)* + $crate::__private::Send + $crate::__private::Sync + 'clone> where $($bound)* {
             fn clone(&self) -> Self {
                 $crate::clone_box(&**self)