error[E0659]: `Error` is ambiguous
  --> $DIR/ambiguous-7.rs:15:9
   |
LL | fn a<E: Error>(_: E) {}
   |         ^^^^^ ambiguous name
   |
   = note: ambiguous because of multiple glob imports of a name in the same module
note: `Error` could refer to the trait imported here
  --> $DIR/ambiguous-7.rs:14:5
   |
LL | use self::t3::*;
   |     ^^^^^^^^^^^
   = help: consider adding an explicit import of `Error` to disambiguate
note: `Error` could also refer to the enum imported here
  --> $DIR/ambiguous-7.rs:8:9
   |
LL | pub use t2::*;
   |         ^^^^^
   = help: consider adding an explicit import of `Error` to disambiguate

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0659`.