1 error[E0382]: use of moved value
2 --> $DIR/move-in-pattern-mut-in-loop.rs:7:21
4 LL | if let Some(mut _x) = opt {}
5 | ^^^^^^ value moved here, in previous iteration of loop
7 = note: move occurs because value has type `&mut i32`, which does not implement the `Copy` trait
8 help: borrow this field in the pattern to avoid moving `opt.0`
10 LL | if let Some(ref mut _x) = opt {}
13 error: aborting due to previous error
15 For more information about this error, try `rustc --explain E0382`.