syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// for T` will be forced to prove not only that `T: Foo` but also `T:
context_before: /// proven when checking impls. This means that (e.g.) the `impl Bar
context_after: /// Copy` (which it won't be able to do, because there is no `Copy`