error: `start` is not allowed to have `#[target_feature]`
  --> $DIR/issue-108645-target-feature-on-start.rs:7:1
   |
LL | #[target_feature(enable = "avx2")]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL |
LL | fn start(_argc: isize, _argv: *const *const u8) -> isize { 0 }
   | -------------------------------------------------------- `start` is not allowed to have `#[target_feature]`

error: aborting due to previous error