Make sequences wrap around to avoid overflows
Instead of aborting with an `attempt to add with overflow` error, wrap the sequence around so that it goes back to 0 once it has reached the maximum value for the integer type.  Fixes
@@ -38,7 +38,7 @@ pub trait Seq {
macro_rules! impl_seq {
($($ty:ty)*) => { $(
impl Seq for $ty {
- fn next(&self) -> Self { *self + 1 }
+ fn next(&self) -> Self { (*self).wrapping_add(1) }
}
)* }
}
