1 warning[E0507]: cannot move out of `foo` in pattern guard
2 --> $DIR/borrowck-migrate-to-nll.rs:26:18
4 LL | (|| { let bar = foo; bar.take() })();
7 | | move occurs because `foo` has type `&mut std::option::Option<&i32>`, which does not implement the `Copy` trait
8 | | move occurs due to use in closure
9 | move out of `foo` occurs here
11 = note: variables bound in patterns cannot be moved from until after the end of the pattern guard
12 = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
13 = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
14 = note: for more information, try `rustc --explain E0729`