syntax_data: {"ast_node_type":"other","tokens":[{"end":25,"kind":"keyword","start":0,"text":"bug!("}]}
source_snippet:                     bug!(
context_before:                 if !abi_coherent {
context_after:                         "Variant ABI is incompatible with top-level ABI:\nvariant={:#?}\nTop-level: {layout:#?}",