syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// this should always be true. If this is unknowingly false and you try to
context_before:     /// shares code between the new and old trait solvers; for all other users,
context_after:     /// use the new trait solver, things will break badly.