syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // that apply) and try to winnow things down. This results in
context_before:         // up with many candidates (since that are other `Eq` impls
context_after:         // a recursive evaluation that `$1 : Eq` -- as you can