rust/src/test/ui/trait-bounds/unsized-bound.stderr

error[E0277]: the size for values of type `B` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:2:12
   |
LL | trait Trait<A> {}
   |             - required by this bound in `Trait`
LL | impl<A, B> Trait<(A, B)> for (A, B) where A: ?Sized, B: ?Sized, {}
   |         -  ^^^^^^^^^^^^^ doesn't have a size known at compile-time
   |         |
   |         this type parameter needs to be `std::marker::Sized`
   |
   = note: required because it appears within the type `(A, B)`
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<A, B> Trait<(A, B)> for (A, B) where A: ?Sized, B: ?Sized, {}
LL + impl<A, B> Trait<(A, B)> for (A, B) where A: ?Sized, {}
   | 
help: consider relaxing the implicit `Sized` restriction
   |
LL | trait Trait<A: ?Sized> {}
   |              ++++++++

error[E0277]: the size for values of type `A` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:2:30
   |
LL | impl<A, B> Trait<(A, B)> for (A, B) where A: ?Sized, B: ?Sized, {}
   |      -                       ^^^^^^ doesn't have a size known at compile-time
   |      |
   |      this type parameter needs to be `std::marker::Sized`
   |
   = note: only the last element of a tuple may have a dynamically sized type
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<A, B> Trait<(A, B)> for (A, B) where A: ?Sized, B: ?Sized, {}
LL + impl<A, B> Trait<(A, B)> for (A, B) where B: ?Sized, {}
   | 

error[E0277]: the size for values of type `C` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:5:31
   |
LL | trait Trait<A> {}
   |             - required by this bound in `Trait`
...
LL | impl<A, B: ?Sized, C: ?Sized> Trait<(A, B, C)> for (A, B, C) where A: ?Sized, {}
   |                    -          ^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
   |                    |
   |                    this type parameter needs to be `std::marker::Sized`
   |
   = note: required because it appears within the type `(A, B, C)`
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<A, B: ?Sized, C: ?Sized> Trait<(A, B, C)> for (A, B, C) where A: ?Sized, {}
LL + impl<A, B: ?Sized, C> Trait<(A, B, C)> for (A, B, C) where A: ?Sized, {}
   | 
help: consider relaxing the implicit `Sized` restriction
   |
LL | trait Trait<A: ?Sized> {}
   |              ++++++++

error[E0277]: the size for values of type `A` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:5:52
   |
LL | impl<A, B: ?Sized, C: ?Sized> Trait<(A, B, C)> for (A, B, C) where A: ?Sized, {}
   |      -                                             ^^^^^^^^^ doesn't have a size known at compile-time
   |      |
   |      this type parameter needs to be `std::marker::Sized`
   |
   = note: only the last element of a tuple may have a dynamically sized type
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<A, B: ?Sized, C: ?Sized> Trait<(A, B, C)> for (A, B, C) where A: ?Sized, {}
LL + impl<A, B: ?Sized, C: ?Sized> Trait<(A, B, C)> for (A, B, C)  {}
   | 

error[E0277]: the size for values of type `B` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:5:52
   |
LL | impl<A, B: ?Sized, C: ?Sized> Trait<(A, B, C)> for (A, B, C) where A: ?Sized, {}
   |         -                                          ^^^^^^^^^ doesn't have a size known at compile-time
   |         |
   |         this type parameter needs to be `std::marker::Sized`
   |
   = note: only the last element of a tuple may have a dynamically sized type
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<A, B: ?Sized, C: ?Sized> Trait<(A, B, C)> for (A, B, C) where A: ?Sized, {}
LL + impl<A, B, C: ?Sized> Trait<(A, B, C)> for (A, B, C) where A: ?Sized, {}
   | 

error[E0277]: the size for values of type `B` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:10:28
   |
LL | trait Trait2<A> {}
   |              - required by this bound in `Trait2`
LL | impl<A: ?Sized, B: ?Sized> Trait2<(A, B)> for (A, B) {}
   |                 -          ^^^^^^^^^^^^^^ doesn't have a size known at compile-time
   |                 |
   |                 this type parameter needs to be `std::marker::Sized`
   |
   = note: required because it appears within the type `(A, B)`
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<A: ?Sized, B: ?Sized> Trait2<(A, B)> for (A, B) {}
LL + impl<A: ?Sized, B> Trait2<(A, B)> for (A, B) {}
   | 
help: consider relaxing the implicit `Sized` restriction
   |
LL | trait Trait2<A: ?Sized> {}
   |               ++++++++

error[E0277]: the size for values of type `A` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:10:47
   |
LL | impl<A: ?Sized, B: ?Sized> Trait2<(A, B)> for (A, B) {}
   |      -                                        ^^^^^^ doesn't have a size known at compile-time
   |      |
   |      this type parameter needs to be `std::marker::Sized`
   |
   = note: only the last element of a tuple may have a dynamically sized type
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<A: ?Sized, B: ?Sized> Trait2<(A, B)> for (A, B) {}
LL + impl<A, B: ?Sized> Trait2<(A, B)> for (A, B) {}
   | 

error[E0277]: the size for values of type `A` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:14:9
   |
LL | trait Trait3<A> {}
   |              - required by this bound in `Trait3`
LL | impl<A> Trait3<A> for A where A: ?Sized {}
   |      -  ^^^^^^^^^ doesn't have a size known at compile-time
   |      |
   |      this type parameter needs to be `std::marker::Sized`
   |
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<A> Trait3<A> for A where A: ?Sized {}
LL + impl<A> Trait3<A> for A  {}
   | 
help: consider relaxing the implicit `Sized` restriction
   |
LL | trait Trait3<A: ?Sized> {}
   |               ++++++++

error[E0277]: the size for values of type `A` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:17:17
   |
LL | trait Trait4<A> {}
   |              - required by this bound in `Trait4`
LL | impl<A: ?Sized> Trait4<A> for A {}
   |      -          ^^^^^^^^^ doesn't have a size known at compile-time
   |      |
   |      this type parameter needs to be `std::marker::Sized`
   |
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<A: ?Sized> Trait4<A> for A {}
LL + impl<A> Trait4<A> for A {}
   | 
help: consider relaxing the implicit `Sized` restriction
   |
LL | trait Trait4<A: ?Sized> {}
   |               ++++++++

error[E0277]: the size for values of type `X` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:20:12
   |
LL | trait Trait5<A, B> {}
   |              - required by this bound in `Trait5`
LL | impl<X, Y> Trait5<X, Y> for X where X: ?Sized {}
   |      -     ^^^^^^^^^^^^ doesn't have a size known at compile-time
   |      |
   |      this type parameter needs to be `std::marker::Sized`
   |
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<X, Y> Trait5<X, Y> for X where X: ?Sized {}
LL + impl<X, Y> Trait5<X, Y> for X  {}
   | 
help: consider relaxing the implicit `Sized` restriction
   |
LL | trait Trait5<A: ?Sized, B> {}
   |               ++++++++

error[E0277]: the size for values of type `X` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:23:20
   |
LL | trait Trait6<A, B> {}
   |              - required by this bound in `Trait6`
LL | impl<X: ?Sized, Y> Trait6<X, Y> for X {}
   |      -             ^^^^^^^^^^^^ doesn't have a size known at compile-time
   |      |
   |      this type parameter needs to be `std::marker::Sized`
   |
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<X: ?Sized, Y> Trait6<X, Y> for X {}
LL + impl<X, Y> Trait6<X, Y> for X {}
   | 
help: consider relaxing the implicit `Sized` restriction
   |
LL | trait Trait6<A: ?Sized, B> {}
   |               ++++++++

error[E0277]: the size for values of type `Y` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:26:12
   |
LL | trait Trait7<A, B> {}
   |                 - required by this bound in `Trait7`
LL | impl<X, Y> Trait7<X, Y> for X where Y: ?Sized {}
   |         -  ^^^^^^^^^^^^ doesn't have a size known at compile-time
   |         |
   |         this type parameter needs to be `std::marker::Sized`
   |
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<X, Y> Trait7<X, Y> for X where Y: ?Sized {}
LL + impl<X, Y> Trait7<X, Y> for X  {}
   | 
help: consider relaxing the implicit `Sized` restriction
   |
LL | trait Trait7<A, B: ?Sized> {}
   |                  ++++++++

error[E0277]: the size for values of type `Y` cannot be known at compilation time
  --> $DIR/unsized-bound.rs:29:20
   |
LL | trait Trait8<A, B> {}
   |                 - required by this bound in `Trait8`
LL | impl<X, Y: ?Sized> Trait8<X, Y> for X {}
   |         -          ^^^^^^^^^^^^ doesn't have a size known at compile-time
   |         |
   |         this type parameter needs to be `std::marker::Sized`
   |
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - impl<X, Y: ?Sized> Trait8<X, Y> for X {}
LL + impl<X, Y> Trait8<X, Y> for X {}
   | 
help: consider relaxing the implicit `Sized` restriction
   |
LL | trait Trait8<A, B: ?Sized> {}
   |                  ++++++++

error: aborting due to 13 previous errors

For more information about this error, try `rustc --explain E0277`.