error[E0658]: #[rustc_force_inline] forces a free function to be inlined --> $DIR/gate.rs:4:1 | LL | #[rustc_force_inline] | ^^^^^^^^^^^^^^^^^^^^^ | = help: add `#![feature(rustc_attrs)]` to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error[E0658]: #[rustc_force_inline] forces a free function to be inlined --> $DIR/gate.rs:9:1 | LL | #[rustc_force_inline = "the test requires it"] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: add `#![feature(rustc_attrs)]` to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0658`.