syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"assert_eq!(debruijn,"}]}
source_snippet:                                 assert_eq!(debruijn, ty::INNERMOST);
context_before:                                 // We only allow a `ty::INNERMOST` index in generic parameters.
context_after:                                 cvar == b.var