error[E0412]: cannot find type `Cow` in this scope
  --> $DIR/impl-bound-with-references-error.rs:12:13
   |
LL |     T: Into<Cow<'static, str>>,
   |             ^^^ not found in this scope
   |
help: consider importing this enum
   |
LL + use std::borrow::Cow;
LL | pub enum LabelText {
   |

error[E0119]: conflicting implementations of trait `From<LabelText>` for type `LabelText`
  --> $DIR/impl-bound-with-references-error.rs:9:1
   |
LL | impl<T> From<T> for LabelText
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: conflicting implementation in crate `core`:
           - impl<T> From<T> for T;

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0119, E0412.
For more information about an error, try `rustc --explain E0119`.