diff --git a/src/connectors/google.rs b/src/connectors/google.rs
index 8f069596bf..be5dece177 100644
--- a/src/connectors/google.rs
+++ b/src/connectors/google.rs
@@ -47,11 +47,11 @@ type TonicInternalBodyType = UnsyncBoxBody<bytes::Bytes, tonic::Status>;
 impl Display for TremorTonicServiceError {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
         match *self {
-            Self::HyperError(ref err) => write!(f, "Hyper error: {}", err),
-            Self::TonicStatus(ref status) => write!(f, "Tonic error: {}", status),
-            Self::TonicTransportError(ref err) => write!(f, "Tonic transport error: {}", err),
-            Self::GoogleAuthError(ref err) => write!(f, "Google Auth error: {}", err),
-            Self::GoogleCredentialsError(ref err) => write!(f, "Google Credentials error: {}", err),
+            Self::HyperError(ref err) => write!(f, "Hyper error: {err}"),
+            Self::TonicStatus(ref status) => write!(f, "Tonic error: {status}"),
+            Self::TonicTransportError(ref err) => write!(f, "Tonic transport error: {err}"),
+            Self::GoogleAuthError(ref err) => write!(f, "Google Auth error: {err}"),
+            Self::GoogleCredentialsError(ref err) => write!(f, "Google Credentials error: {err}"),
         }
     }
 }
@@ -230,8 +230,8 @@ impl TremorGoogleAuthz {
     }
 
     // Create a new mock channel to a GCP gRPC service
-    pub async fn new_mock(logic: MockServiceRpcCall) -> Result<Self> {
-        Ok(Self::Test(TonicMockService::new(logic)))
+    pub fn new_mock(logic: MockServiceRpcCall) -> Self {
+        Self::Test(TonicMockService::new(logic))
     }
 }
 
@@ -256,7 +256,7 @@ pub(crate) mod tests {
     // NOTE so we use mock tests where emulators/simulators are not available at this time
     #[async_std::test]
     async fn appease_the_coverage_gods() -> Result<()> {
-        let mut mock = TremorGoogleAuthz::new_mock(|_| http::Response::new(empty_body())).await?;
+        let mut mock = TremorGoogleAuthz::new_mock(|_| http::Response::new(empty_body())).await;
         let actual = mock.call(http::Request::new(empty_body())).await;
         if let Ok(actual) = actual {
             let actual = hyper::body::to_bytes(actual).await?;
diff --git a/src/connectors/impls/gbq/writer/sink.rs b/src/connectors/impls/gbq/writer/sink.rs
index cb768b3b3d..b649fb3968 100644
--- a/src/connectors/impls/gbq/writer/sink.rs
+++ b/src/connectors/impls/gbq/writer/sink.rs
@@ -329,7 +329,7 @@ impl Sink for GbqSink {
         let request = AppendRowsRequest {
             write_stream: write_stream.name.clone(),
             offset: None,
-            trace_id: "".to_string(),
+            trace_id: String::new(),
             rows: Some(append_rows_request::Rows::ProtoRows(ProtoData {
                 writer_schema: Some(ProtoSchema {
                     proto_descriptor: Some(mapping.descriptor().clone()),
@@ -399,12 +399,12 @@ impl Sink for GbqSink {
                 parent: self.config.table_id.clone(),
                 write_stream: Some(WriteStream {
                     // The stream name here will be ignored and a generated value will be set in the response
-                    name: "".to_string(),
+                    name: String::new(),
                     r#type: i32::from(write_stream::Type::Committed),
                     create_time: None,
                     commit_time: None,
                     table_schema: None,
-                    location: "".to_string(), // Should be a valid region TODO FIXME
+                    location: String::new(), // Should be a valid region TODO FIXME
                     write_mode: WriteMode::Insert.into(),
                 }),
             })
diff --git a/src/connectors/impls/gcl/writer/sink.rs b/src/connectors/impls/gcl/writer/sink.rs
index 7e2a1dfc28..dc83733131 100644
--- a/src/connectors/impls/gcl/writer/sink.rs
+++ b/src/connectors/impls/gcl/writer/sink.rs
@@ -203,22 +203,19 @@ impl Sink for GclSink {
     }
 
     async fn connect(&mut self, ctx: &SinkContext, _attempt: &Attempt) -> Result<bool> {
-        match self.mock_logic {
-            Some(logic) => {
-                info!("{} Mocking connection to Google Cloud Logging", ctx);
-                self.client = Some(LoggingServiceV2Client::new(
-                    TremorGoogleAuthz::new_mock(logic).await?,
-                ));
-            }
-            None => {
-                info!("{} Connecting to Google Cloud Logging", ctx);
-                let channel =
-                    make_tonic_channel(Duration::from_nanos(self.config.connect_timeout)).await?;
-
-                let client = LoggingServiceV2Client::new(channel);
-
-                self.client = Some(client);
-            }
+        if let Some(logic) = self.mock_logic {
+            info!("{} Mocking connection to Google Cloud Logging", ctx);
+            self.client = Some(LoggingServiceV2Client::new(
+                TremorGoogleAuthz::new_mock(logic),
+            ));
+        } else  {
+            info!("{} Connecting to Google Cloud Logging", ctx);
+            let channel =
+                make_tonic_channel(Duration::from_nanos(self.config.connect_timeout)).await?;
+
+            let client = LoggingServiceV2Client::new(channel);
+
+            self.client = Some(client);
         }
 
         Ok(true)
diff --git a/src/connectors/impls/otel/metrics.rs b/src/connectors/impls/otel/metrics.rs
index b5cb060847..7e851a0aa1 100644
--- a/src/connectors/impls/otel/metrics.rs
+++ b/src/connectors/impls/otel/metrics.rs
@@ -327,7 +327,7 @@ pub(crate) fn metrics_records_to_pb(json: Option<&Value<'_>>) -> Result<Vec<Metr
         json.as_array()
             .ok_or("Invalid json mapping for [MetricRecord, ...]")?
             .iter()
-            .map(|item| metric_to_pb(item))
+            .map(metric_to_pb)
             .collect()
     } else {
         Ok(vec![])