error[E0432]: unresolved import `extern_prelude`
  --> $DIR/extern-prelude-fail.rs:7:9
   |
LL |     use extern_prelude::S;
   |         ^^^^^^^^^^^^^^ you might be missing crate `extern_prelude`
   |
help: consider importing the `extern_prelude` crate
   |
LL + extern crate extern_prelude;
   |

error[E0433]: failed to resolve: you might be missing crate `extern_prelude`
  --> $DIR/extern-prelude-fail.rs:8:15
   |
LL |     let s = ::extern_prelude::S;
   |               ^^^^^^^^^^^^^^ you might be missing crate `extern_prelude`
   |
help: consider importing the `extern_prelude` crate
   |
LL + extern crate extern_prelude;
   |

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0432, E0433.
For more information about an error, try `rustc --explain E0432`.