mod m1 { pub trait Trait { fn method1(&self) {} } impl Trait for u8 {} } mod m2 { pub trait Trait { fn method2(&self) {} } impl Trait for u8 {} } fn test1() { // Create an ambiguous import for `Trait` in one order use m1::*; use m2::*; 0u8.method1(); // OK 0u8.method2(); // ERROR no method named `method2` found for type `u8` in the current scope } fn test2() { // Create an ambiguous import for `Trait` in another order use m2::*; use m1::*; 0u8.method1(); // ERROR no method named `method1` found for type `u8` in the current scope 0u8.method2(); // OK } fn main() {}