remove AsMut/AsRef bounds because of a compiler bug

src/requests/has_payload.rs

@@ -18,21 +18,19 @@ use crate::requests::Payload;
 /// [`BorrowMut`]: std::borrow::BorrowMut
 /// [`Payload`]: crate::requests::Payload
 /// [output]: HasPayload::Payload
-pub trait HasPayload:
-    AsMut<<Self as HasPayload>::Payload> + AsRef<<Self as HasPayload>::Payload>
+pub trait HasPayload
+// FIXME(waffle):
+//   we wanted to use As{Mut,Ref} here, but they doesn't work
+//   because of https://github.com/rust-lang/rust/issues/77010
 {
     /// Type of the payload contained.
     type Payload: Payload;
 
     /// Gain mutable access to the underlying payload.
-    fn payload_mut(&mut self) -> &mut Self::Payload {
-        self.as_mut()
-    }
+    fn payload_mut(&mut self) -> &mut Self::Payload;
 
     /// Gain immutable access to the underlying payload.
-    fn payload_ref(&self) -> &Self::Payload {
-        self.as_ref()
-    }
+    fn payload_ref(&self) -> &Self::Payload;
 }
 
 impl<P> HasPayload for P
@@ -40,4 +38,12 @@ where
     P: Payload,
 {
     type Payload = Self;
+
+    fn payload_mut(&mut self) -> &mut Self::Payload {
+        self
+    }
+
+    fn payload_ref(&self) -> &Self::Payload {
+        self
+    }
 }

src/requests/json.rs

@@ -55,31 +55,27 @@ where
     P: Payload,
 {
     type Payload = P;
-}
 
-impl<P> AsRef<P> for JsonRequest<P> {
-    fn as_ref(&self) -> &P {
-        &self.payload
-    }
-}
-
-impl<P> AsMut<P> for JsonRequest<P> {
-    fn as_mut(&mut self) -> &mut P {
+    fn payload_mut(&mut self) -> &mut Self::Payload {
         &mut self.payload
     }
+
+    fn payload_ref(&self) -> &Self::Payload {
+        &self.payload
+    }
 }
 
 impl<P: Payload + Serialize> core::ops::Deref for JsonRequest<P> {
     type Target = P;
 
     fn deref(&self) -> &Self::Target {
-        self.as_ref()
+        self.payload_ref()
     }
 }
 
 impl<P: Payload + Serialize> core::ops::DerefMut for JsonRequest<P> {
     fn deref_mut(&mut self) -> &mut Self::Target {
-        self.as_mut()
+        self.payload_mut()
     }
 }
 

src/requests/multipart.rs

@@ -55,18 +55,14 @@ where
     P: Payload,
 {
     type Payload = P;
-}
 
-impl<P> AsRef<P> for MultipartRequest<P> {
-    fn as_ref(&self) -> &P {
-        &self.payload
-    }
-}
-
-impl<P> AsMut<P> for MultipartRequest<P> {
-    fn as_mut(&mut self) -> &mut P {
+    fn payload_mut(&mut self) -> &mut Self::Payload {
         &mut self.payload
     }
+
+    fn payload_ref(&self) -> &Self::Payload {
+        &self.payload
+    }
 }
 
 impl<P> core::ops::Deref for MultipartRequest<P>
@@ -78,7 +74,7 @@ where
     type Target = P;
 
     fn deref(&self) -> &Self::Target {
-        self.as_ref()
+        self.payload_ref()
     }
 }
 
@@ -89,7 +85,7 @@ where
     P::Output: DeserializeOwned,
 {
     fn deref_mut(&mut self) -> &mut Self::Target {
-        self.as_mut()
+        self.payload_mut()
     }
 }
 

src/requests/payload.rs

@@ -6,7 +6,7 @@
 /// This trait provides some additional information needed for sending request
 /// to the telegram.
 #[cfg_attr(all(docsrs, feature = "nightly"), doc(spotlight))]
-pub trait Payload: AsMut<Self> + AsRef<Self> {
+pub trait Payload {
     /// Return type of the telegram method.
     ///
     /// Note: that should not include result wrappers (e.g. it should be simply