syntax_data: {"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"overflow_checks:"}]}
source_snippet:     overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
context_before:     #[rustc_lint_opt_deny_field_access("use `Session::overflow_checks` instead of this field")]
context_after:         "use overflow checks for integer arithmetic"),