syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"rust_2024_migration_desugared_pats:"}]}
source_snippet:     rust_2024_migration_desugared_pats: ItemLocalMap<Rust2024IncompatiblePatInfo>,
context_before:     /// to a form valid in all Editions, either as a lint diagnostic or hard error.