warning: irrefutable `let...else` pattern
  --> $DIR/let-else-irrefutable.rs:6:5
   |
LL |     let x = 1 else { return };
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(irrefutable_let_patterns)]` on by default
   = note: this pattern will always match, so the `else` clause is useless
   = help: consider removing the `else` clause

warning: 1 warning emitted