error[E0277]: the trait bound `&'static mut (): Clone` is not satisfied
  --> $DIR/issue-93008.rs:5:5
   |
LL |     &'static mut (): Clone,
   |     ^^^^^^^^^^^^^^^^^^^^^^ the trait `Clone` is not implemented for `&'static mut ()`
   |
   = help: see issue #48214
   = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.