syntax_data: {"ast_node_type":"other","tokens":[{"end":124,"kind":"keyword","start":0,"text":"err.note(format!(\"`{ty}`"}]}
source_snippet:                 err.note(format!("`{ty}` is uninhabited but is not being matched by value, so a wildcard `_` is required"));
context_before:                 // case.
context_after:             }