src/test/ui/issues/issue-41726.rs

   1 use std::collections::HashMap;
   2 fn main() {
   3     let things: HashMap<String, Vec<String>> = HashMap::new();
   4     for src in things.keys() {
   5         things[src.as_str()].sort(); //~ ERROR cannot borrow data in an index of
   6     }
   7 }