syntax_data: {"ast_node_type":"other","tokens":[{"end":110,"kind":"keyword","start":0,"text":"\"associated_types_for_impl_traits_in_trait_or_impl:"}]}
source_snippet:                 "associated_types_for_impl_traits_in_trait_or_impl: {:?} should be Trait or Impl but is {:?}",
context_before:             bug!(
context_after:                 def_id,