1 error[E0659]: `std` is ambiguous
2 --> $DIR/ambiguity.rs:5:5
7 = note: ambiguous because of multiple potential import sources
8 = note: `std` could refer to a built-in crate
9 = help: use `::std` to refer to this crate unambiguously
10 note: `std` could also refer to the module defined here
11 --> $DIR/ambiguity.rs:8:1
17 = help: use `crate::std` to refer to this module unambiguously
19 error: aborting due to previous error
21 For more information about this error, try `rustc --explain E0659`.