syntax_data: {"ast_node_type":"import","tokens":[{"end":78,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// const check, optionally with the relevant feature gate. We use this to
context_before:     /// This tracks where `-Zunleash-the-miri-inside-of-you` was used to get around a
context_after:     /// warn about unleashing, but with a single diagnostic instead of dozens that