tests/ui/stability-attribute/issue-28075.stderr

   1 error[E0658]: use of unstable library feature 'unstable_test_feature'
   2   --> $DIR/issue-28075.rs:9:22
   3    |
   4 LL | use lint_stability::{unstable, deprecated};
   5    |                      ^^^^^^^^
   6    |
   7    = help: add `#![feature(unstable_test_feature)]` to the crate attributes to enable
   8
   9 error: aborting due to 1 previous error
  10
  11 For more information about this error, try `rustc --explain E0658`.