error[E0005]: refutable pattern in `for` loop binding --> $DIR/for-loop-refutable-pattern-error-message.rs:2:9 | LL | for &1 in [1].iter() {} | ^^ patterns `&i32::MIN..=0_i32` and `&2_i32..=i32::MAX` not covered | = note: the matched value is of type `&i32` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0005`.