error[E0277]: the trait bound `Error: Clone` is not satisfied
  --> $DIR/derives-span-Clone-enum.rs:9:6
   |
LL |      Error
   |      ^^^^^ the trait `Clone` is not implemented for `Error`
   |
   = note: required by `clone`
   = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to previous error

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