syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:             if hash_spans != ctx.unstable_opts_incremental_ignore_spans() => {}
context_before:         HashingControls { hash_spans }
context_after:         other => panic!("Attempted hashing of {msg} with non-default HashingControls: {other:?}"),