| error[E0658]: The attribute `emit_unchanged` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642) | |
| --> $DIR/issue-41211.rs:18:4 | |
| | | |
| LL | #![emit_unchanged] | |
| | ^^^^^^^^^^^^^^ | |
| | | |
| = help: add #![feature(custom_attribute)] to the crate attributes to enable | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0658`. |