warning: unnecessary trailing semicolons
  --> $DIR/old-closure-expr-precedence.rs:60:21
   |
LL |   if (true) { 12; };;; -num;
   |                     ^^ help: remove these semicolons
   |
   = note: `#[warn(redundant_semicolons)]` (part of `#[warn(unused)]`) on by default

warning: 1 warning emitted