src/test/ui/feature-gate-crate_visibility_modifier.stderr

error: `crate` visibility modifier is experimental (see issue #45388)
  --> $DIR/feature-gate-crate_visibility_modifier.rs:11:1
   |
11 | crate struct Bender { //~ ERROR `crate` visibility modifier is experimental
   | ^^^^^
   |
   = help: add #![feature(crate_visibility_modifier)] to the crate attributes to enable

error: aborting due to previous error