Trait RationalArg
pub trait RationalArg:
    Clone
    + Ord
    + Div<Output = Self>
    + Rem<Output = Self>
    + Add<Output = Self>
    + AddAssign
    + Unsigned
    + Zero
    + One
    + MultiplyRational { }Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.