src/test/ui/issues/issue-38715.stderr

   1 error[E0428]: the name `foo` is defined multiple times
   2   --> $DIR/issue-38715.rs:5:1
   3    |
   4 LL | macro_rules! foo { ($i:ident) => {} }
   5    | ---------------- previous definition of the macro `foo` here
   6 ...
   7 LL | macro_rules! foo { () => {} }
   8    | ^^^^^^^^^^^^^^^^ `foo` redefined here
   9    |
  10    = note: `foo` must be defined only once in the macro namespace of this module
  11
  12 error: aborting due to previous error
  13
  14 For more information about this error, try `rustc --explain E0428`.