syntax_data: {"ast_node_type":"import","tokens":[{"end":96,"kind":"keyword","start":0,"text":"#[rustc_lint_opt_deny_field_access(\"use"}]}
source_snippet:     #[rustc_lint_opt_deny_field_access("use `Session::unstable_options` instead of this field")]
context_before:     /// to avoid an inconsistent state we also forbid them here.
context_after:     unstable_options: bool = (false, parse_no_value, [UNTRACKED],