|  | //@ edition: 2015 | 
|  | //@ check-pass | 
|  | #![warn(redundant_imports)] | 
|  |  | 
|  |  | 
|  | use std::option::Option::Some;//~ WARNING the item `Some` is imported redundantly | 
|  | use std::option::Option::None; //~ WARNING the item `None` is imported redundantly | 
|  |  | 
|  | use std::result::Result::Ok;//~ WARNING the item `Ok` is imported redundantly | 
|  | use std::result::Result::Err;//~ WARNING the item `Err` is imported redundantly | 
|  | use std::convert::{TryFrom, TryInto}; | 
|  |  | 
|  | fn main() { | 
|  | let _a: Option<i32> = Some(1); | 
|  | let _b: Option<i32>  = None; | 
|  | let _c: Result<i32, String> = Ok(1); | 
|  | let _d: Result<i32, &str> = Err("error"); | 
|  | let _e: Result<i32, _> = 8u8.try_into(); | 
|  | let _f: Result<i32, _> = i32::try_from(8u8); | 
|  | } |