syntax_data: {"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// the num_cpus behavior.
context_before:     /// in the future. Note that -Zthreads=0 is the way to get
context_after:     #[rustc_lint_opt_deny_field_access("use `Session::threads` instead of this field")]