| error: the feature `rustdoc_internals` has already been enabled | |
| --> $DIR/rustc-check-passes.rs:2:12 | |
| | | |
| LL | #![feature(rustdoc_internals)] | |
| | ^^^^^^^^^^^^^^^^^ | |
| | | |
| = note: `#[deny(duplicate_features)]` on by default | |
| error: aborting due to 1 previous error | |