syntax_data: {"ast_node_type":"other","tokens":[{"end":104,"kind":"keyword","start":0,"text":"\"enable"}]}
source_snippet:         "enable `TypingMode::Borrowck`, changing the way opaque types are handled during MIR borrowck"),
context_before:     typing_mode_borrowck: bool = (false, parse_bool, [TRACKED],
context_after:     #[rustc_lint_opt_deny_field_access("use `Session::ub_checks` instead of this field")]