syntax_data: {"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"ty::ConstKind::Expr(_)"}]}
source_snippet:                         ty::ConstKind::Expr(_) => return Ok(EvaluatedToOk),
context_before:                         // FIXME(generic_const_exprs): See comment in `fulfill.rs`
context_after:                         ty::ConstKind::Placeholder(_) => {