error[E0658]: allow_internal_unstable side-steps feature gating and stability checks --> $DIR/feature-gate-allow-internal-unstable-nested-macro.rs:8:9 | LL | #[allow_internal_unstable()] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ... LL | bar!(); | ------ in this macro invocation | = help: add `#![feature(allow_internal_unstable)]` to the crate attributes to enable = note: this error originates in the macro `bar` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0658`.