error[E0428]: the name `orange` is defined multiple times
  --> $DIR/duplicate-methods.rs:3:5
   |
LL |     fn orange(&self);
   |     ----------------- previous definition of the value `orange` here
LL |     fn orange(&self);
   |     ^^^^^^^^^^^^^^^^^ `orange` redefined here
   |
   = note: `orange` must be defined only once in the value namespace of this trait

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0428`.