warning: denote infinite loops with `loop { ... }`
  --> $DIR/unicode_3.rs:4:45
   |
LL |     let s = "ZͨA͑ͦ͒͋ͤ͑̚L̄͑͋Ĝͨͥ̿͒̽̈́Oͥ͛ͭ!̏"; while true { break; }
   |                       ^^^^^^^^^^ help: use `loop`
   |
   = note: `#[warn(while_true)]` on by default

warning: 1 warning emitted