1 error[E0301]: cannot mutably borrow in a pattern guard
4 LL | option if option.take().is_none() => {},
5 | ^^^^^^ borrowed mutably in pattern guard
7 = help: add `#![feature(bind_by_move_pattern_guards)]` to the crate attributes to enable
9 error[E0596]: cannot borrow `option` as mutable, as it is immutable for the pattern guard
10 --> $DIR/E0301.rs:4:19
12 LL | option if option.take().is_none() => {},
13 | ^^^^^^ cannot borrow as mutable
15 = note: variables bound in patterns are immutable until the end of the pattern guard
17 error: aborting due to 2 previous errors
19 Some errors have detailed explanations: E0301, E0596.
20 For more information about an error, try `rustc --explain E0301`.