syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                         // FIXME(generic_const_exprs): See comment in `fulfill.rs`
context_before:                         }
context_after:                         ty::ConstKind::Expr(_) => return Ok(EvaluatedToOk),