structure Foo.{v, u_1} {α : Sort u_1} (β : α → Type v) : Sort (max u_1 (v + 1))
number of parameters: 2
fields:
  Foo.a : α
  Foo.b : β self.a
constructor:
  Foo.mk.{v, u_1} {α : Sort u_1} {β : α → Type v} (a : α) (b : β a) : Foo β
structAutoBound.lean:9:15-9:16: error: a universe level named 'u' has already been declared
structure Boo.{u, v} (α : Type u) (β : Type v) : Type (max u v)
number of parameters: 2
fields:
  Boo.a : α
  Boo.b : β
constructor:
  Boo.mk.{u, v} {α : Type u} {β : Type v} (a : α) (b : β) : Boo α β
structAutoBound.lean:18:10-18:44: error: unused universe parameter 'w'