syntax_data: {"ast_node_type":"import","tokens":[{"end":96,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// But because the parameter to `foo` is of the unsized type `dyn Debug`, and because it is
context_before:     ///
context_after:     /// being moved the deref of a box, we compile it slightly differently. The temporary `tmp0`