1 error: `std` import is ambiguous
2 --> $DIR/ambiguity.rs:15:5
5 | ^^^ can refer to external crate `::std`
10 | |_- can refer to `self::std`
12 = help: write `::std` or `self::std` explicitly instead
13 = note: relative `use` paths enabled by `#![feature(uniform_paths)]`
15 error: aborting due to previous error