You tried to provide a generic argument to a type which doesn't need it.
Erroneous code example:
type X = u32<i32>; // error: type arguments are not allowed for this type type Y = bool<'static>; // error: lifetime parameters are not allowed on // this type
Check that you used the correct argument and that the definition is correct.
Example:
type X = u32; // ok! type Y = bool; // ok!
Note that generic arguments for enum variant constructors go after the variant, not after the enum. For example, you would write Option::None::<u32>
, rather than Option::<u32>::None
.