crypto: Fix some clippy warnings

matrix_sdk_crypto/src/verification/cache.rs

@@ -35,6 +35,7 @@ impl VerificationCache {
     }
 
     #[cfg(test)]
+    #[allow(dead_code)]
     pub fn is_empty(&self) -> bool {
         self.verification.is_empty()
     }

matrix_sdk_crypto/src/verification/machine.rs

@@ -371,7 +371,7 @@ mod test {
         );
 
         machine
-            .receive_any_event(&wrap_any_to_device_content(bob_sas.user_id(), start_content.into()))
+            .receive_any_event(&wrap_any_to_device_content(bob_sas.user_id(), start_content))
             .await
             .unwrap();
 
@@ -405,8 +405,7 @@ mod test {
         alice_machine.receive_any_event(&event).await.unwrap();
         assert!(!alice_machine.verifications.outgoing_requests().is_empty());
 
-        let request =
-            alice_machine.verifications.outgoing_requests().iter().next().unwrap().clone();
+        let request = alice_machine.verifications.outgoing_requests().get(0).cloned().unwrap();
         let txn_id = *request.request_id();
         let content = OutgoingContent::try_from(request).unwrap();
         let content = KeyContent::try_from(&content).unwrap().into();

matrix_sdk_crypto/src/verification/requests.rs

@@ -248,14 +248,14 @@ impl VerificationRequest {
     pub(crate) fn receive_done(&self, sender: &UserId, content: &DoneContent<'_>) {
         if sender == self.other_user() {
             let mut inner = self.inner.lock().unwrap().clone();
-            inner.into_done(content);
+            inner.receive_done(content);
         }
     }
 
     pub(crate) fn receive_cancel(&self, sender: &UserId, content: &CancelContent<'_>) {
         if sender == self.other_user() {
             let mut inner = self.inner.lock().unwrap().clone();
-            inner.into_canceled(content.cancel_code());
+            inner.cancel(content.cancel_code());
         }
     }
 
@@ -336,7 +336,7 @@ impl InnerRequest {
         }
     }
 
-    fn into_done(&mut self, content: &DoneContent) {
+    fn receive_done(&mut self, content: &DoneContent) {
         *self = InnerRequest::Done(match self {
             InnerRequest::Created(s) => s.clone().into_done(content),
             InnerRequest::Requested(s) => s.clone().into_done(content),
@@ -347,7 +347,7 @@ impl InnerRequest {
         })
     }
 
-    fn into_canceled(&mut self, cancel_code: &CancelCode) {
+    fn cancel(&mut self, cancel_code: &CancelCode) {
         *self = InnerRequest::Cancelled(match self {
             InnerRequest::Created(s) => s.clone().into_canceled(cancel_code),
             InnerRequest::Requested(s) => s.clone().into_canceled(cancel_code),