chore(build): Address beta lint warning and suggestions (#3168)

Fixing beta lint warning making sure new Rust release will be just
working in Relay codebase.

Also updating `uuid` to the newest version to address some of the errors
while using `beta`.

Cargo.toml

@@ -39,4 +39,4 @@ smallvec = { version = "1.11.2", features = ["serde"] }
 thiserror = "1.0.38"
 tokio = { version = "1.28.0", features = ["macros", "sync", "tracing"] }
 url = "2.1.1"
-uuid = { version = "1.3.0", features = ["serde", "v4"] }
+uuid = { version = "1.7.0", features = ["serde", "v4"] }

relay-ffi/src/lib.rs

@@ -113,7 +113,7 @@ use std::{fmt, panic, thread};
 pub use relay_ffi_macros::catch_unwind;
 
 thread_local! {
-    static LAST_ERROR: RefCell<Option<anyhow::Error>> = RefCell::new(None);
+    static LAST_ERROR: RefCell<Option<anyhow::Error>> = const { RefCell::new(None) };
 }
 
 fn set_last_error(err: anyhow::Error) {

relay-server/src/services/processor.rs

@@ -1141,7 +1141,7 @@ impl EnvelopeProcessorService {
         &self,
         state: &mut ProcessEnvelopeState<G>,
     ) -> Result<(), ProcessingError> {
-        if let Some(sampling_state) = state.sampling_project_state.as_ref().map(Arc::clone) {
+        if let Some(sampling_state) = state.sampling_project_state.clone() {
             state
                 .envelope_mut()
                 .parametrize_dsc_transaction(&sampling_state.config.tx_name_rules);

relay-server/src/utils/dynamic_sampling.rs

@@ -200,7 +200,7 @@ mod tests {
     /// Tests that an event is kept when there is a match and we have 100% sample rate.
     fn test_match_rules_return_keep_with_match_and_100_sample_rate() {
         let event = mocked_event(EventType::Transaction, "bar", "2.0");
-        let rules = vec![mocked_sampling_rule(1, RuleType::Transaction, 1.0)];
+        let rules = [mocked_sampling_rule(1, RuleType::Transaction, 1.0)];
         let seed = Uuid::default();
 
         let result: SamplingResult = SamplingEvaluator::new(Utc::now())
@@ -214,7 +214,7 @@ mod tests {
     /// Tests that an event is dropped when there is a match and we have 0% sample rate.
     fn test_match_rules_return_drop_with_match_and_0_sample_rate() {
         let event = mocked_event(EventType::Transaction, "bar", "2.0");
-        let rules = vec![mocked_sampling_rule(1, RuleType::Transaction, 0.0)];
+        let rules = [mocked_sampling_rule(1, RuleType::Transaction, 0.0)];
         let seed = Uuid::default();
 
         let result: SamplingResult = SamplingEvaluator::new(Utc::now())
@@ -228,7 +228,7 @@ mod tests {
     #[test]
     /// Tests that an event is kept when there is no match.
     fn test_match_rules_return_keep_with_no_match() {
-        let rules = vec![SamplingRule {
+        let rules = [SamplingRule {
             condition: RuleCondition::eq_ignore_case("event.transaction", "foo"),
             sampling_value: SamplingValue::SampleRate { value: 0.5 },
             ty: RuleType::Transaction,
@@ -251,7 +251,7 @@ mod tests {
     #[test]
     /// Tests that an event is kept when there is a trace match and we have 100% sample rate.
     fn test_match_rules_with_traces_rules_return_keep_when_match() {
-        let rules = vec![mocked_sampling_rule(1, RuleType::Trace, 1.0)];
+        let rules = [mocked_sampling_rule(1, RuleType::Trace, 1.0)];
         let dsc = mocked_simple_dynamic_sampling_context(Some(1.0), Some("3.0"), None, None, None);
 
         let result: SamplingResult = SamplingEvaluator::new(Utc::now())