error[E0658]: use of an internal attribute
  --> $DIR/gate.rs:4:1
   |
LL | #[rustc_force_inline]
   | ^^^^^^^^^^^^^^^^^^^^^
   |
   = help: add `#![feature(rustc_attrs)]` to the crate attributes to enable
   = note: the `#[rustc_force_inline]` attribute is an internal implementation detail that will never be stable
   = note: `#[rustc_force_inline]` forces a free function to be inlined

error[E0658]: use of an internal attribute
  --> $DIR/gate.rs:11:1
   |
LL | #[rustc_force_inline = "the test requires it"]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: add `#![feature(rustc_attrs)]` to the crate attributes to enable
   = note: the `#[rustc_force_inline]` attribute is an internal implementation detail that will never be stable
   = note: `#[rustc_force_inline]` forces a free function to be inlined

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0658`.