| error[E0658]: use of unstable library feature 'concat_idents': `concat_idents` is not stable enough for use and is subject to change |
| --> $DIR/feature-gate-concat_idents2.rs:2:5 |
| | |
| LL | concat_idents!(a, b); |
| | ^^^^^^^^^^^^^ |
| | |
| = note: see issue #29599 <https://github.com/rust-lang/rust/issues/29599> for more information |
| = help: add `#![feature(concat_idents)]` to the crate attributes to enable |
| = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date |
| |
| error[E0425]: cannot find value `ab` in this scope |
| --> $DIR/feature-gate-concat_idents2.rs:2:5 |
| | |
| LL | concat_idents!(a, b); |
| | ^^^^^^^^^^^^^^^^^^^^ not found in this scope |
| | |
| = note: this error originates in the macro `concat_idents` (in Nightly builds, run with -Z macro-backtrace for more info) |
| |
| error: aborting due to 2 previous errors |
| |
| Some errors have detailed explanations: E0425, E0658. |
| For more information about an error, try `rustc --explain E0425`. |
