syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"Answer::No(Reason::DstIsBitIncompatible),"}]}
source_snippet:                         Answer::No(Reason::DstIsBitIncompatible),
context_before:                     assert_eq!(
context_after:                         is_transmutable(&src_layout, &dst_layout, Assume::default()),