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