src/test/ui/suggestions/adt-param-with-implicit-sized-bound.stderr

   1 error[E0277]: the size for values of type `T` cannot be known at compilation time
   2   --> $DIR/adt-param-with-implicit-sized-bound.rs:25:9
   3    |
   4 LL | struct X<T>(T);
   5    |          - required by this bound in `X`
   6 ...
   7 LL | struct Struct5<T: ?Sized>{
   8    |                - this type parameter needs to be `std::marker::Sized`
   9 LL |     _t: X<T>,
  10    |         ^^^^ doesn't have a size known at compile-time
  11    |
  12    = help: the trait `std::marker::Sized` is not implemented for `T`
  13    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
  14 help: you could relax the implicit `Sized` bound on `T` if it were used through indirection like `&T` or `Box<T>`
  15   --> $DIR/adt-param-with-implicit-sized-bound.rs:18:10
  16    |
  17 LL | struct X<T>(T);
  18    |          ^  - ...if indirection was used here: `Box<T>`
  19    |          |
  20    |          this could be changed to `T: ?Sized`...
  21
  22 error[E0277]: the size for values of type `Self` cannot be known at compilation time
  23   --> $DIR/adt-param-with-implicit-sized-bound.rs:2:19
  24    |
  25 LL |     fn func1() -> Struct1<Self>;
  26    |                   ^^^^^^^^^^^^^ doesn't have a size known at compile-time
  27 ...
  28 LL | struct Struct1<T>{
  29    |                - required by this bound in `Struct1`
  30    |
  31    = help: the trait `std::marker::Sized` is not implemented for `Self`
  32    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
  33 help: consider further restricting `Self`
  34    |
  35 LL |     fn func1() -> Struct1<Self> where Self: std::marker::Sized;
  36    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  37 help: consider relaxing the implicit `Sized` restriction
  38    |
  39 LL | struct Struct1<T: ?Sized>{
  40    |                 ^^^^^^^^
  41
  42 error[E0277]: the size for values of type `Self` cannot be known at compilation time
  43   --> $DIR/adt-param-with-implicit-sized-bound.rs:3:23
  44    |
  45 LL |     fn func2<'a>() -> Struct2<'a, Self>;
  46    |                       ^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
  47 ...
  48 LL | struct Struct2<'a, T>{
  49    |                    - required by this bound in `Struct2`
  50    |
  51    = help: the trait `std::marker::Sized` is not implemented for `Self`
  52    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
  53 help: consider further restricting `Self`
  54    |
  55 LL |     fn func2<'a>() -> Struct2<'a, Self> where Self: std::marker::Sized;
  56    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  57 help: consider relaxing the implicit `Sized` restriction
  58    |
  59 LL | struct Struct2<'a, T: ?Sized>{
  60    |                     ^^^^^^^^
  61
  62 error[E0277]: the size for values of type `Self` cannot be known at compilation time
  63   --> $DIR/adt-param-with-implicit-sized-bound.rs:4:19
  64    |
  65 LL |     fn func3() -> Struct3<Self>;
  66    |                   ^^^^^^^^^^^^^ doesn't have a size known at compile-time
  67 ...
  68 LL | struct Struct3<T>{
  69    |                - required by this bound in `Struct3`
  70    |
  71    = help: the trait `std::marker::Sized` is not implemented for `Self`
  72    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
  73 help: you could relax the implicit `Sized` bound on `T` if it were used through indirection like `&T` or `Box<T>`
  74   --> $DIR/adt-param-with-implicit-sized-bound.rs:14:16
  75    |
  76 LL | struct Struct3<T>{
  77    |                ^ this could be changed to `T: ?Sized`...
  78 LL |     _t: T,
  79    |         - ...if indirection was used here: `Box<T>`
  80 help: consider further restricting `Self`
  81    |
  82 LL |     fn func3() -> Struct3<Self> where Self: std::marker::Sized;
  83    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  84
  85 error[E0277]: the size for values of type `Self` cannot be known at compilation time
  86   --> $DIR/adt-param-with-implicit-sized-bound.rs:5:19
  87    |
  88 LL |     fn func4() -> Struct4<Self>;
  89    |                   ^^^^^^^^^^^^^ doesn't have a size known at compile-time
  90 ...
  91 LL | struct Struct4<T>{
  92    |                - required by this bound in `Struct4`
  93    |
  94    = help: the trait `std::marker::Sized` is not implemented for `Self`
  95    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
  96 help: consider further restricting `Self`
  97    |
  98 LL |     fn func4() -> Struct4<Self> where Self: std::marker::Sized;
  99    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 100 help: consider relaxing the implicit `Sized` restriction
 101    |
 102 LL | struct Struct4<T: ?Sized>{
 103    |                 ^^^^^^^^
 104
 105 error: aborting due to 5 previous errors
 106
 107 For more information about this error, try `rustc --explain E0277`.