syntax_data: {"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // negated `CrateNum` (so remote definitions are visited first) and then
context_before:     // iterated over (roughly) in definition order, so we are sorting by
context_after:     // by a flattened version of the `DefIndex`.