syntax_data: {"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // if we have an unsatisfiable `u8: Trait` bound, then it's not a compile
context_before:                 // cause anon consts to inherit the unsatisfiable predicates). For example
context_after:                 // error to mention `[u8; <u8 as Trait>::CONST]`, but we can't compute its