| 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 |
| | |
| LL | #![feature(deref_patterns)] |
| | ^^^^^^^^^^^^^^ |
| | |
| = 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:13:9 |
| | |
| LL | deref!(x) => {} |
| | ^^^^^^^^^ the trait `DerefMut` is not implemented for `Rc<{integer}>` |
| | |
| = note: this error originates in the macro `deref` (in Nightly builds, run with -Z macro-backtrace for more info) |
| |
| error: aborting due to 1 previous error; 1 warning emitted |
| |
| For more information about this error, try `rustc --explain E0277`. |
