error[E0277]: the trait bound `NonImplementedStruct: NonImplementedTrait` is not satisfied in `ADecoder<'a>`
  --> $DIR/dropck-normalize-errors.rs:19:28
   |
LL | fn make_a_decoder<'a>() -> ADecoder<'a> {
   |                            ^^^^^^^^^^^^ unsatisfied trait bound
   |
help: within `ADecoder<'a>`, the trait `NonImplementedTrait` is not implemented for `NonImplementedStruct`
  --> $DIR/dropck-normalize-errors.rs:14:1
   |
LL | struct NonImplementedStruct;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: this trait has no implementations, consider adding one
  --> $DIR/dropck-normalize-errors.rs:11:1
   |
LL | trait NonImplementedTrait {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^
note: required because it appears within the type `BDecoder`
  --> $DIR/dropck-normalize-errors.rs:30:12
   |
LL | pub struct BDecoder {
   |            ^^^^^^^^
note: required because it appears within the type `ADecoder<'a>`
  --> $DIR/dropck-normalize-errors.rs:16:12
   |
LL | pub struct ADecoder<'a> {
   |            ^^^^^^^^
   = note: the return type of a function must have a statically known size

error[E0277]: the trait bound `NonImplementedStruct: NonImplementedTrait` is not satisfied in `BDecoder`
  --> $DIR/dropck-normalize-errors.rs:27:20
   |
LL |     type Decoder = BDecoder;
   |                    ^^^^^^^^ unsatisfied trait bound
   |
help: within `BDecoder`, the trait `NonImplementedTrait` is not implemented for `NonImplementedStruct`
  --> $DIR/dropck-normalize-errors.rs:14:1
   |
LL | struct NonImplementedStruct;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: this trait has no implementations, consider adding one
  --> $DIR/dropck-normalize-errors.rs:11:1
   |
LL | trait NonImplementedTrait {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^
note: required because it appears within the type `BDecoder`
  --> $DIR/dropck-normalize-errors.rs:30:12
   |
LL | pub struct BDecoder {
   |            ^^^^^^^^
note: required by a bound in `Decode::Decoder`
  --> $DIR/dropck-normalize-errors.rs:8:5
   |
LL |     type Decoder;
   |     ^^^^^^^^^^^^^ required by this bound in `Decode::Decoder`
help: consider relaxing the implicit `Sized` restriction
   |
LL |     type Decoder: ?Sized;
   |                 ++++++++

error[E0277]: the trait bound `NonImplementedStruct: NonImplementedTrait` is not satisfied
  --> $DIR/dropck-normalize-errors.rs:31:22
   |
LL |     non_implemented: <NonImplementedStruct as NonImplementedTrait>::Assoc,
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
   |
help: the trait `NonImplementedTrait` is not implemented for `NonImplementedStruct`
  --> $DIR/dropck-normalize-errors.rs:14:1
   |
LL | struct NonImplementedStruct;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: this trait has no implementations, consider adding one
  --> $DIR/dropck-normalize-errors.rs:11:1
   |
LL | trait NonImplementedTrait {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 3 previous errors

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