Set: pp::colors
  Set: pp::unicode
  Imported 'macros'
  Using: Nat
  Assumed: Induction
Failed to solve
 ⊢ ∀ m : ℕ, 0 + m = m + 0 ≺ ?M::3 0
    induction2.lean:10:3: Type of argument 2 must be convertible to the expected type in the application of
        Induction
    with arguments:
        ?M::3
        λ m : ℕ, trans (Nat::add_zerol m) (symm (Nat::add_zeror m))
        λ (n : ℕ) (iH : (?M::3[lift:0:1]) n) (m : ℕ),
          @trans ℕ
                 (n + 1 + m)
                 (m + n + 1)
                 (m + (n + 1))
                 (@trans ℕ
                         (n + 1 + m)
                         (n + m + 1)
                         (m + n + 1)
                         (Nat::add_succl n m)
                         (@subst ?M::14
                                 ?M::15
                                 ?M::16
                                 (λ x : ?M::14,
                                    @eq ((?M::48[lift:0:1]) x) ((?M::49[lift:0:1]) x) ((?M::50[lift:0:1]) x))
                                 (refl (n + m + 1))
                                 iH))
                 (symm (Nat::add_succr m n))