Goal:
  
  A : Type
  B : Type
  R : nat → A → B → Type
  n : nat
  e : apply_noConfusion [] []
        (λ _ : True, apply_noConfusion [] [] (λ _ : True, True)) eq_refl
        eq_refl
  ============================
   (noConfusionHom_All2i_obligation_2 A B R n [] [] All2i_nil All2i_nil
      (noConfusionHom_All2i_obligation_1 A B R n [] [] All2i_nil All2i_nil e) =
    e)


DEBUG:Going to execute:
hnf in id
Level 5: evaluation returns
hnf in id; CoreTactics.destruct_tele_eq id || DepElim.depelim id
where
id := e
of type
constr
b := b
of type
constr
a := a
of type
constr of type tacvalue