Lines      Copies    Function name
  -----      ------    -------------
  62 (100%)  6 (100%)  (TOTAL)
  29 (46.8%) 1 (16.7%) <headers_core::Error as core::fmt::Debug>::fmt
  10 (16.1%) 1 (16.7%) <&T as core::fmt::Debug>::fmt
   9 (14.5%) 1 (16.7%) <headers_core::Error as core::fmt::Display>::fmt
   9 (14.5%) 1 (16.7%) <headers_core::Kind as core::fmt::Debug>::fmt
   4 (6.5%)  1 (16.7%) core::ptr::drop_in_place<&headers_core::Kind>
   1 (1.6%)  1 (16.7%) headers_core::Error::invalid