syntax_data: {"ast_node_type":"import","tokens":[{"end":83,"kind":"keyword","start":0,"text":"#[rustc_lint_opt_deny_field_access(\"use"}]}
source_snippet:     #[rustc_lint_opt_deny_field_access("use `Session::lto` instead of this field")]
context_before:         "a list of arguments to pass to LLVM (space separated)"),
context_after:     lto: LtoCli = (LtoCli::Unspecified, parse_lto, [TRACKED],