syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"Ok(sz)"}]}
source_snippet:                 Ok(sz) => Ok(Ty::new_array_with_const_len(cx, t, sz)),
context_before:             match relation.relate(sz_a, sz_b) {
context_after:                 Err(TypeError::ConstMismatch(_)) => {