error[E0801]: invalid generic `self` parameter type: `R`
  --> $DIR/arbitrary-self-from-method-substs-with-receiver.rs:25:42
   |
LL |     fn a<R: Receiver<Target=Self>>(self: R) -> u32 {
   |                                          ^
   |
   = note: type of `self` must not be a method generic parameter type
   = help: use a concrete type such as `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)

error[E0801]: invalid generic `self` parameter type: `R`
  --> $DIR/arbitrary-self-from-method-substs-with-receiver.rs:29:39
   |
LL |     fn b<R: Deref<Target=Self>>(self: R) -> u32 {
   |                                       ^
   |
   = note: type of `self` must not be a method generic parameter type
   = help: use a concrete type such as `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)

error[E0801]: invalid generic `self` parameter type: `impl Receiver<Target = Self>`
  --> $DIR/arbitrary-self-from-method-substs-with-receiver.rs:33:16
   |
LL |     fn c(self: impl Receiver<Target=Self>) -> u32 {
   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: type of `self` must not be a method generic parameter type
   = help: use a concrete type such as `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)

error[E0801]: invalid generic `self` parameter type: `impl Deref<Target = Self>`
  --> $DIR/arbitrary-self-from-method-substs-with-receiver.rs:37:16
   |
LL |     fn d(self: impl Deref<Target=Self>) -> u32 {
   |                ^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: type of `self` must not be a method generic parameter type
   = help: use a concrete type such as `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)

error[E0308]: mismatched types
  --> $DIR/arbitrary-self-from-method-substs-with-receiver.rs:51:16
   |
LL |     assert_eq!(foo.a::<&Foo>(), 2);
   |                ^^^ expected `&Foo`, found `Foo`

error[E0308]: mismatched types
  --> $DIR/arbitrary-self-from-method-substs-with-receiver.rs:53:16
   |
LL |     assert_eq!(foo.b::<&Foo>(), 1);
   |                ^^^ expected `&Foo`, found `Foo`

error[E0308]: mismatched types
  --> $DIR/arbitrary-self-from-method-substs-with-receiver.rs:60:16
   |
LL |     assert_eq!(smart_ptr.a::<&Foo>(), 2);
   |                ^^^^^^^^^ expected `&Foo`, found `SmartPtr<'_, Foo>`
   |
   = note: expected reference `&Foo`
                 found struct `SmartPtr<'_, Foo, >`

error[E0308]: mismatched types
  --> $DIR/arbitrary-self-from-method-substs-with-receiver.rs:62:16
   |
LL |     assert_eq!(smart_ptr.b::<&Foo>(), 1);
   |                ^^^^^^^^^ expected `&Foo`, found `SmartPtr<'_, Foo>`
   |
   = note: expected reference `&Foo`
                 found struct `SmartPtr<'_, Foo, >`

error: aborting due to 8 previous errors

Some errors have detailed explanations: E0308, E0801.
For more information about an error, try `rustc --explain E0308`.