syntax_data: {"ast_node_type":"import","tokens":[{"end":62,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     ///     true => drop(x), //~ ERROR use of moved value: `x`
context_before:     ///     // Borrowck must not know the guard is not run in the `true` case.
context_after:     ///     false => {},