src/test/ui/stability-attribute/allowed-through-unstable.stderr

   1 error[E0658]: use of unstable library feature 'unstable_test_feature'
   2   --> $DIR/allowed-through-unstable.rs:9:5
   3    |
   4 LL | use allowed_through_unstable_core::unstable_module::NewStableTraitNotAllowedThroughUnstable;
   5    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   6    |
   7    = note: see issue #1 <https://github.com/rust-lang/rust/issues/1> for more information
   8    = help: add `#![feature(unstable_test_feature)]` to the crate attributes to enable
   9
  10 error: aborting due to previous error
  11
  12 For more information about this error, try `rustc --explain E0658`.