error[E0277]: the size for values of type `X` cannot be known at compilation time
  --> $DIR/unsized3.rs:7:13
   |
LL | fn f1<X: ?Sized>(x: &X) {
   |       - this type parameter needs to be `std::marker::Sized`
LL |     f2::<X>(x);
   |     ------- ^ doesn't have a size known at compile-time
   |     |
   |     required by a bound introduced by this call
   |
note: required by a bound in `f2`
  --> $DIR/unsized3.rs:10:7
   |
LL | fn f2<X>(x: &X) {
   |       ^ required by this bound in `f2`
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - fn f1<X: ?Sized>(x: &X) {
LL + fn f1<X>(x: &X) {
   |
help: consider relaxing the implicit `Sized` restriction
   |
LL | fn f2<X: ?Sized>(x: &X) {
   |        ++++++++

error[E0277]: the size for values of type `X` cannot be known at compilation time
  --> $DIR/unsized3.rs:18:13
   |
LL | fn f3<X: ?Sized + T>(x: &X) {
   |       - this type parameter needs to be `std::marker::Sized`
LL |     f4::<X>(x);
   |     ------- ^ doesn't have a size known at compile-time
   |     |
   |     required by a bound introduced by this call
   |
note: required by a bound in `f4`
  --> $DIR/unsized3.rs:21:7
   |
LL | fn f4<X: T>(x: &X) {
   |       ^ required by this bound in `f4`
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - fn f3<X: ?Sized + T>(x: &X) {
LL + fn f3<X: T>(x: &X) {
   |
help: consider relaxing the implicit `Sized` restriction
   |
LL | fn f4<X: T + ?Sized>(x: &X) {
   |            ++++++++

error[E0277]: the size for values of type `X` cannot be known at compilation time
  --> $DIR/unsized3.rs:33:8
   |
LL | fn f8<X: ?Sized>(x1: &S<X>, x2: &S<X>) {
   |       - this type parameter needs to be `std::marker::Sized`
LL |     f5(x1);
   |     -- ^^ doesn't have a size known at compile-time
   |     |
   |     required by a bound introduced by this call
   |
note: required because it appears within the type `S<X>`
  --> $DIR/unsized3.rs:28:8
   |
LL | struct S<X: ?Sized> {
   |        ^
note: required by a bound in `f5`
  --> $DIR/unsized3.rs:24:7
   |
LL | fn f5<Y>(x: &Y) {}
   |       ^ required by this bound in `f5`
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - fn f8<X: ?Sized>(x1: &S<X>, x2: &S<X>) {
LL + fn f8<X>(x1: &S<X>, x2: &S<X>) {
   |
help: consider relaxing the implicit `Sized` restriction
   |
LL | fn f5<Y: ?Sized>(x: &Y) {}
   |        ++++++++

error[E0277]: the size for values of type `X` cannot be known at compilation time
  --> $DIR/unsized3.rs:40:5
   |
LL | fn f9<X: ?Sized>(x1: Box<S<X>>) {
   |       - this type parameter needs to be `std::marker::Sized`
LL |     f5(&(*x1, 34));
   |     ^^ doesn't have a size known at compile-time
   |
note: required because it appears within the type `S<X>`
  --> $DIR/unsized3.rs:28:8
   |
LL | struct S<X: ?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 - fn f9<X: ?Sized>(x1: Box<S<X>>) {
LL + fn f9<X>(x1: Box<S<X>>) {
   |

error[E0277]: the size for values of type `X` cannot be known at compilation time
  --> $DIR/unsized3.rs:45:9
   |
LL | fn f10<X: ?Sized>(x1: Box<S<X>>) {
   |        - this type parameter needs to be `std::marker::Sized`
LL |     f5(&(32, *x1));
   |         ^^^^^^^^^ doesn't have a size known at compile-time
   |
note: required because it appears within the type `S<X>`
  --> $DIR/unsized3.rs:28:8
   |
LL | struct S<X: ?Sized> {
   |        ^
   = note: required because it appears within the type `({integer}, S<X>)`
   = note: tuples must have a statically known size to be initialized
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - fn f10<X: ?Sized>(x1: Box<S<X>>) {
LL + fn f10<X>(x1: Box<S<X>>) {
   |

error[E0277]: the size for values of type `X` cannot be known at compilation time
  --> $DIR/unsized3.rs:45:8
   |
LL | fn f10<X: ?Sized>(x1: Box<S<X>>) {
   |        - this type parameter needs to be `std::marker::Sized`
LL |     f5(&(32, *x1));
   |     -- ^^^^^^^^^^ doesn't have a size known at compile-time
   |     |
   |     required by a bound introduced by this call
   |
note: required because it appears within the type `S<X>`
  --> $DIR/unsized3.rs:28:8
   |
LL | struct S<X: ?Sized> {
   |        ^
   = note: required because it appears within the type `({integer}, S<X>)`
note: required by a bound in `f5`
  --> $DIR/unsized3.rs:24:7
   |
LL | fn f5<Y>(x: &Y) {}
   |       ^ required by this bound in `f5`
help: consider removing the `?Sized` bound to make the type parameter `Sized`
   |
LL - fn f10<X: ?Sized>(x1: Box<S<X>>) {
LL + fn f10<X>(x1: Box<S<X>>) {
   |
help: consider relaxing the implicit `Sized` restriction
   |
LL | fn f5<Y: ?Sized>(x: &Y) {}
   |        ++++++++

error: aborting due to 6 previous errors

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