src/test/ui/traits/test-2.stderr

   1 error[E0107]: this associated function takes 0 generic arguments but 1 generic argument was supplied
   2   --> $DIR/test-2.rs:9:8
   3    |
   4 LL |     10.dup::<i32>();
   5    |        ^^^------- help: remove these generics
   6    |        |
   7    |        expected 0 generic arguments
   8    |
   9 note: associated function defined here, with 0 generic parameters
  10   --> $DIR/test-2.rs:4:16
  11    |
  12 LL | trait bar { fn dup(&self) -> Self; fn blah<X>(&self); }
  13    |                ^^^
  14
  15 error[E0107]: this associated function takes 1 generic argument but 2 generic arguments were supplied
  16   --> $DIR/test-2.rs:11:8
  17    |
  18 LL |     10.blah::<i32, i32>();
  19    |        ^^^^        --- help: remove this generic argument
  20    |        |
  21    |        expected 1 generic argument
  22    |
  23 note: associated function defined here, with 1 generic parameter: `X`
  24   --> $DIR/test-2.rs:4:39
  25    |
  26 LL | trait bar { fn dup(&self) -> Self; fn blah<X>(&self); }
  27    |                                       ^^^^ -
  28
  29 error[E0038]: the trait `bar` cannot be made into an object
  30   --> $DIR/test-2.rs:13:22
  31    |
  32 LL |     (Box::new(10) as Box<dyn bar>).dup();
  33    |                      ^^^^^^^^^^^^ `bar` cannot be made into an object
  34    |
  35 note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
  36   --> $DIR/test-2.rs:4:30
  37    |
  38 LL | trait bar { fn dup(&self) -> Self; fn blah<X>(&self); }
  39    |       ---                    ^^^^     ^^^^ ...because method `blah` has generic type parameters
  40    |       |                      |
  41    |       |                      ...because method `dup` references the `Self` type in its return type
  42    |       this trait cannot be made into an object...
  43    = help: consider moving `dup` to another trait
  44    = help: consider moving `blah` to another trait
  45
  46 error[E0038]: the trait `bar` cannot be made into an object
  47   --> $DIR/test-2.rs:13:5
  48    |
  49 LL |     (Box::new(10) as Box<dyn bar>).dup();
  50    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `bar` cannot be made into an object
  51    |
  52 note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
  53   --> $DIR/test-2.rs:4:30
  54    |
  55 LL | trait bar { fn dup(&self) -> Self; fn blah<X>(&self); }
  56    |       ---                    ^^^^     ^^^^ ...because method `blah` has generic type parameters
  57    |       |                      |
  58    |       |                      ...because method `dup` references the `Self` type in its return type
  59    |       this trait cannot be made into an object...
  60    = help: consider moving `dup` to another trait
  61    = help: consider moving `blah` to another trait
  62
  63 error[E0038]: the trait `bar` cannot be made into an object
  64   --> $DIR/test-2.rs:13:6
  65    |
  66 LL |     (Box::new(10) as Box<dyn bar>).dup();
  67    |      ^^^^^^^^^^^^ `bar` cannot be made into an object
  68    |
  69 note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
  70   --> $DIR/test-2.rs:4:30
  71    |
  72 LL | trait bar { fn dup(&self) -> Self; fn blah<X>(&self); }
  73    |       ---                    ^^^^     ^^^^ ...because method `blah` has generic type parameters
  74    |       |                      |
  75    |       |                      ...because method `dup` references the `Self` type in its return type
  76    |       this trait cannot be made into an object...
  77    = help: consider moving `dup` to another trait
  78    = help: consider moving `blah` to another trait
  79    = note: required for `Box<{integer}>` to implement `CoerceUnsized<Box<dyn bar>>`
  80    = note: required by cast to type `Box<dyn bar>`
  81
  82 error: aborting due to 5 previous errors
  83
  84 Some errors have detailed explanations: E0038, E0107.
  85 For more information about an error, try `rustc --explain E0038`.