1error[E0658]: the `#[default_lib_allocator]` attribute is an experimental feature
2  --> $DIR/feature-gate-allocator_internals.rs:1:1
3   |
4LL | #![default_lib_allocator]
5   | ^^^^^^^^^^^^^^^^^^^^^^^^^
6   |
7   = help: add `#![feature(allocator_internals)]` to the crate attributes to enable
8
9error: aborting due to previous error
10
11For more information about this error, try `rustc --explain E0658`.
12