Lines      Copies    Function name
  -----      ------    -------------
  27 (100%)  3 (100%)  (TOTAL)
   9 (33.3%) 1 (33.3%) <wyz::comu::Const as core::fmt::Debug>::fmt
   9 (33.3%) 1 (33.3%) <wyz::comu::Mut as core::fmt::Debug>::fmt
   9 (33.3%) 1 (33.3%) <wyz::comu::NullPtrError as core::fmt::Debug>::fmt