[Marsman1996]

For self == i64::MIN, other == -1, the % hits the remainder-overflow case (MIN / -1 overflows).

num-integer/src/lib.rs

Lines 570 to 575 in 765fd9b

	fn is_multiple_of(&self, other: &Self) -> bool {
	if other.is_zero() {
	return self.is_zero();
	}
	*self % *other == 0
	}

Mathematically MIN % -1 is 0, so is_multiple_of(&MIN, &-1) should return true, consistent with the existing -1 guards in next_multiple_of and prev_multiple_of that were added in #45