error[E0658]: the `#[debugger_visualizer]` attribute is an experimental feature --> $DIR/feature-gate-debugger-visualizer.rs:1:1 | LL | #![debugger_visualizer(natvis_file = "auxiliary/debugger-visualizer.natvis")] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: see issue #95939 for more information = help: add `#![feature(debugger_visualizer)]` to the crate attributes to enable error: aborting due to previous error For more information about this error, try `rustc --explain E0658`.