error: `max_size` should be set only once
 --> tests/ui/errors/attr.tuples.unique.max-size.rs:7:15
  |
7 |     #[tuples::max_size(2)]
  |               ^^^^^^^^

error: the first definition was here
 --> tests/ui/errors/attr.tuples.unique.max-size.rs:6:15
  |
6 |     #[tuples::max_size(1)]
  |               ^^^^^^^^