syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"Err(TypeError::ArraySize(ExpectedFound::new(sz_a,"}]}
source_snippet:                     Err(TypeError::ArraySize(ExpectedFound::new(sz_a, sz_b)))
context_before:                 Err(TypeError::ConstMismatch(_)) => {
context_after:                 }