error[E0080]: evaluation of constant value failed
 --> $DIR/task-priority-too-high.rs:3:1
  |
3 | #[rtic::app(device = lm3s6965)]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ attempt to compute `8_usize - 9_usize`, which would overflow
  |
  = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)