error[E0539]: malformed `coverage` attribute input
  --> $DIR/bad-attr-ice.rs:11:1
   |
LL | #[coverage]
   | ^^^^^^^^^^^ this attribute is only valid with either `on` or `off` as an argument
   |
help: try changing it to one of the following valid forms of the attribute
   |
LL | #[coverage(off)]
   |           +++++
LL | #[coverage(on)]
   |           ++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0539`.