warning: duplicate matcher binding
  --> $DIR/macro-multiple-matcher-bindings.rs:11:6
   |
LL |     ($a:ident, $a:ident) => {}; //~WARNING duplicate matcher binding
   |      ^^^^^^^^  ^^^^^^^^
   |
   = note: #[warn(duplicate_matcher_binding_name)] on by default
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #57593 <https://github.com/rust-lang/rust/issues/57593>

warning: duplicate matcher binding
  --> $DIR/macro-multiple-matcher-bindings.rs:12:6
   |
LL |     ($a:ident, $a:path) => {};  //~WARNING duplicate matcher binding
   |      ^^^^^^^^  ^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #57593 <https://github.com/rust-lang/rust/issues/57593>

warning: duplicate matcher binding
  --> $DIR/macro-multiple-matcher-bindings.rs:21:6
   |
LL |     ($a:ident, $($a:ident),*) => {}; //~WARNING duplicate matcher binding
   |      ^^^^^^^^    ^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #57593 <https://github.com/rust-lang/rust/issues/57593>

warning: duplicate matcher binding
  --> $DIR/macro-multiple-matcher-bindings.rs:22:8
   |
LL |     ($($a:ident)+ # $($($a:path),+);*) => {}; //~WARNING duplicate matcher binding
   |        ^^^^^^^^         ^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #57593 <https://github.com/rust-lang/rust/issues/57593>