Fixed compilation errors

crates/env/src/api.rs

@@ -173,13 +173,12 @@ where
 }
 
 /// Emits an event with the given event data.
-pub fn emit_event<E, Event>(event: Event)
+pub fn emit_event<Event>(event: Event)
 where
-    E: Environment,
     Event: Topics + scale::Encode,
 {
     <EnvInstance as OnInstance>::on_instance(|instance| {
-        TypedEnvBackend::emit_event::<E, Event>(instance, event)
+        TypedEnvBackend::emit_event::<Event>(instance, event)
     })
 }
 

crates/env/src/backend.rs

@@ -401,9 +401,8 @@ pub trait TypedEnvBackend: EnvBackend {
     /// # Note
     ///
     /// For more details visit: [`emit_event`][`crate::emit_event`]
-    fn emit_event<E, Event>(&mut self, event: Event)
+    fn emit_event<Event>(&mut self, event: Event)
     where
-        E: Environment,
         Event: Topics + scale::Encode;
 
     /// Invokes a contract message and returns its result.

crates/env/src/engine/off_chain/impls.rs

@@ -426,9 +426,8 @@ impl TypedEnvBackend for EnvInstance {
             })
     }
 
-    fn emit_event<E, Event>(&mut self, event: Event)
+    fn emit_event<Event>(&mut self, event: Event)
     where
-        E: Environment,
         Event: Topics + scale::Encode,
     {
         let builder = TopicsBuilder::default();

crates/env/src/engine/on_chain/impls.rs

@@ -401,13 +401,13 @@ impl TypedEnvBackend for EnvInstance {
         self.get_property_little_endian::<E::Balance>(ext::minimum_balance)
     }
 
-    fn emit_event<E, Event>(&mut self, event: Event)
+    fn emit_event<Event>(&mut self, event: Event)
     where
-        E: Environment,
         Event: Topics + scale::Encode,
     {
-        let (mut scope, enc_topics) =
-            event.topics::<E, _>(TopicsBuilder::from(self.scoped_buffer()).into());
+        let (mut scope, enc_topics) = event.topics(
+            TopicsBuilder::<<Event as Topics>::Env>::from(self.scoped_buffer()).into(),
+        );
         let enc_data = scope.take_encoded(&event);
         ext::deposit_event(enc_topics, enc_data);
     }

crates/ink/src/env_access.rs

@@ -414,7 +414,7 @@ where
     where
         Event: ink_env::Topics + scale::Encode,
     {
-        ink_env::emit_event::<E, Event>(event)
+        ink_env::emit_event::<Event>(event)
     }
 
     /// Instantiates another contract.