error: `#[optimize]` attribute cannot be used on structs
  --> $DIR/optimize.rs:8:1
   |
LL | #[optimize(speed)]
   | ^^^^^^^^^^^^^^^^^^
   |
   = help: `#[optimize]` can only be applied to functions

error: `#[optimize]` attribute cannot be used on expressions
  --> $DIR/optimize.rs:12:5
   |
LL |     #[optimize(speed)]
   |     ^^^^^^^^^^^^^^^^^^
   |
   = help: `#[optimize]` can only be applied to functions

error: `#[optimize]` attribute cannot be used on modules
  --> $DIR/optimize.rs:21:1
   |
LL | #[optimize(speed)]
   | ^^^^^^^^^^^^^^^^^^
   |
   = help: `#[optimize]` can only be applied to functions

error: `#[optimize]` attribute cannot be used on inherent impl blocks
  --> $DIR/optimize.rs:24:1
   |
LL | #[optimize(speed)]
   | ^^^^^^^^^^^^^^^^^^
   |
   = help: `#[optimize]` can only be applied to functions

error: aborting due to 4 previous errors