syntax_data: {"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"\"Use"}]}
source_snippet:         "Use WebAssembly error handling for wasm32-unknown-emscripten"),
context_before:     emscripten_wasm_eh: bool = (false, parse_bool, [TRACKED],
context_after:     enforce_type_length_limit: bool = (false, parse_bool, [TRACKED],