error[E0658]: dyn* trait objects are unstable --> $DIR/feature-gate-dyn_star.rs:5:31 | LL | pub fn dyn_star_parameter(_: &dyn* Send) { | ^^^^^^^^^ | = note: see issue #102425 <https://github.com/rust-lang/rust/issues/102425> for more information = help: add `#![feature(dyn_star)]` to the crate attributes to enable error: aborting due to previous error For more information about this error, try `rustc --explain E0658`.