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warning: the feature `deref_patterns` is incomplete and may not be safe to use and/or cause compiler crashes
--> $DIR/ref-mut.rs:1:12
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LL | #![feature(deref_patterns)]
| ^^^^^^^^^^^^^^
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= note: see issue #87121 <https://github.com/rust-lang/rust/issues/87121> for more information
= note: `#[warn(incomplete_features)]` on by default
error[E0277]: the trait bound `Rc<{integer}>: DerefMut` is not satisfied
--> $DIR/ref-mut.rs:17:9
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LL | deref!(x) => {}
| ^^^^^^^^^ the trait `DerefMut` is not implemented for `Rc<{integer}>`
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= note: this error originates in the macro `deref` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `Rc<({integer},)>: DerefMut` is not satisfied
--> $DIR/ref-mut.rs:22:9
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LL | (x,) => {}
| ^^^^ the trait `DerefMut` is not implemented for `Rc<({integer},)>`
error: aborting due to 2 previous errors; 1 warning emitted
For more information about this error, try `rustc --explain E0277`.
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