diff --git a/server/crates/arbiter-client/src/auth.rs b/server/crates/arbiter-client/src/auth.rs
index eae51e9..176cd13 100644
--- a/server/crates/arbiter-client/src/auth.rs
+++ b/server/crates/arbiter-client/src/auth.rs
@@ -100,7 +100,7 @@ async fn send_auth_challenge_solution(
     key: &SigningKey,
     challenge: AuthChallenge,
 ) -> Result<(), AuthError> {
-    let timestamp = DateTime::from_timestamp_nanos(challenge.timestamp_nanos as i64);
+    let timestamp = DateTime::from_timestamp_nanos(challenge.timestamp_nanos.cast_signed());
     let challenge = authn::AuthChallenge {
         nonce: *challenge
             .random
diff --git a/server/crates/arbiter-server/src/grpc/client/auth.rs b/server/crates/arbiter-server/src/grpc/client/auth.rs
index 25399cd..2e5375a 100644
--- a/server/crates/arbiter-server/src/grpc/client/auth.rs
+++ b/server/crates/arbiter-server/src/grpc/client/auth.rs
@@ -200,7 +200,7 @@ impl Convert for auth::Outbound {
                         .timestamp
                         .timestamp_nanos_opt()
                         .expect("timestamp within range")
-                        as u64,
+                        .cast_unsigned(),
                     random: challenge.nonce.to_vec(),
                 })
             }
diff --git a/server/crates/arbiter-server/src/grpc/operator/auth.rs b/server/crates/arbiter-server/src/grpc/operator/auth.rs
index a900e0b..fa15310 100644
--- a/server/crates/arbiter-server/src/grpc/operator/auth.rs
+++ b/server/crates/arbiter-server/src/grpc/operator/auth.rs
@@ -80,7 +80,7 @@ impl Sender<Result<auth::Outbound, auth::Error>> for AuthTransportAdapter<'_> {
                         .timestamp
                         .timestamp_nanos_opt()
                         .expect("timestamp within range")
-                        as u64,
+                        .cast_unsigned(),
                     random: challenge.nonce.to_vec(),
                 })
             }
diff --git a/server/crates/arbiter-server/src/peers/client/auth.rs b/server/crates/arbiter-server/src/peers/client/auth.rs
index 3742f97..f488161 100644
--- a/server/crates/arbiter-server/src/peers/client/auth.rs
+++ b/server/crates/arbiter-server/src/peers/client/auth.rs
@@ -298,7 +298,7 @@ where
 
     let signature = expect_message(transport, |req: Inbound| match req {
         Inbound::AuthChallengeSolution { signature } => Some(signature),
-        _ => None,
+        Inbound::AuthChallengeRequest { .. } => None,
     })
     .await
     .map_err(|e| {
diff --git a/server/crates/arbiter-server/src/peers/operator/auth/state.rs b/server/crates/arbiter-server/src/peers/operator/auth/state.rs
index b37d4b5..38f1ecd 100644
--- a/server/crates/arbiter-server/src/peers/operator/auth/state.rs
+++ b/server/crates/arbiter-server/src/peers/operator/auth/state.rs
@@ -127,8 +127,6 @@ where
         })
     }
 
-    #[allow(missing_docs)]
-    #[allow(clippy::unused_unit)]
     async fn verify_solution(
         &mut self,
         ChallengeContext {
diff --git a/server/crates/arbiter-server/src/peers/operator/session/handlers.rs b/server/crates/arbiter-server/src/peers/operator/session/handlers.rs
index df20070..5ac6cb4 100644
--- a/server/crates/arbiter-server/src/peers/operator/session/handlers.rs
+++ b/server/crates/arbiter-server/src/peers/operator/session/handlers.rs
@@ -212,8 +212,7 @@ impl OperatorSession {
         &mut self,
     ) -> Result<Vec<EvmWalletAccess>, Error> {
         let mut conn = self.props.db.get().await?;
-        use crate::db::schema::evm_wallet_access;
-        let access_entries = evm_wallet_access::table
+        let access_entries = crate::db::schema::evm_wallet_access::table
             .select(EvmWalletAccess::as_select())
             .load::<_>(&mut conn)
             .await?;
diff --git a/server/crates/arbiter-server/src/peers/operator/session/mod.rs b/server/crates/arbiter-server/src/peers/operator/session/mod.rs
index 79281bb..0fe2c84 100644
--- a/server/crates/arbiter-server/src/peers/operator/session/mod.rs
+++ b/server/crates/arbiter-server/src/peers/operator/session/mod.rs
@@ -63,7 +63,7 @@ impl OperatorSession {
         Self {
             props,
             sender,
-            pending_client_approvals: Default::default(),
+            pending_client_approvals: HashMap::default(),
         }
     }
 }
diff --git a/server/crates/arbiter-server/tests/operator/auth.rs b/server/crates/arbiter-server/tests/operator/auth.rs
index e9e585d..cc1f8f3 100644
--- a/server/crates/arbiter-server/tests/operator/auth.rs
+++ b/server/crates/arbiter-server/tests/operator/auth.rs
@@ -400,7 +400,7 @@ pub async fn challenge_auth_rejects_integrity_tag_mismatch_when_unsealed() {
     let challenge = match response {
         Ok(resp) => match resp {
             auth::Outbound::AuthChallenge { challenge } => challenge,
-            other => panic!("Expected AuthChallenge, got {other:?}"),
+            other @ auth::Outbound::AuthSuccess => panic!("Expected AuthChallenge, got {other:?}"),
         },
         Err(err) => panic!("Expected Ok response, got Err({err:?})"),
     };
diff --git a/server/crates/arbiter-server/tests/vault/lifecycle.rs b/server/crates/arbiter-server/tests/vault/lifecycle.rs
index 25017c4..c4ee7da 100644
--- a/server/crates/arbiter-server/tests/vault/lifecycle.rs
+++ b/server/crates/arbiter-server/tests/vault/lifecycle.rs
@@ -14,7 +14,7 @@ use diesel_async::RunQueryDsl;
 
 #[tokio::test]
 #[test_log::test]
-async fn test_bootstrap() {
+async fn bootstrap() {
     let db = db::create_test_pool().await;
     let mut actor = Vault::new(db.clone(), GlobalActors::spawn_message_bus())
         .await
@@ -39,7 +39,7 @@ async fn test_bootstrap() {
 
 #[tokio::test]
 #[test_log::test]
-async fn test_bootstrap_rejects_double() {
+async fn bootstrap_rejects_double() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
@@ -50,7 +50,7 @@ async fn test_bootstrap_rejects_double() {
 
 #[tokio::test]
 #[test_log::test]
-async fn test_create_new_before_bootstrap_fails() {
+async fn create_new_before_bootstrap_fails() {
     let db = db::create_test_pool().await;
     let mut actor = Vault::new(db, GlobalActors::spawn_message_bus())
         .await
@@ -65,7 +65,7 @@ async fn test_create_new_before_bootstrap_fails() {
 
 #[tokio::test]
 #[test_log::test]
-async fn test_decrypt_before_bootstrap_fails() {
+async fn decrypt_before_bootstrap_fails() {
     let db = db::create_test_pool().await;
     let mut actor = Vault::new(db, GlobalActors::spawn_message_bus())
         .await
@@ -77,7 +77,7 @@ async fn test_decrypt_before_bootstrap_fails() {
 
 #[tokio::test]
 #[test_log::test]
-async fn test_new_restores_sealed_state() {
+async fn new_restores_sealed_state() {
     let db = db::create_test_pool().await;
     let actor = common::bootstrapped_vault(&db).await;
     drop(actor);
@@ -91,7 +91,7 @@ async fn test_new_restores_sealed_state() {
 
 #[tokio::test]
 #[test_log::test]
-async fn test_unseal_correct_password() {
+async fn unseal_correct_password() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
@@ -114,7 +114,7 @@ async fn test_unseal_correct_password() {
 
 #[tokio::test]
 #[test_log::test]
-async fn test_unseal_wrong_then_correct_password() {
+async fn unseal_wrong_then_correct_password() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
diff --git a/server/crates/arbiter-server/tests/vault/storage.rs b/server/crates/arbiter-server/tests/vault/storage.rs
index 391080f..c1bd321 100644
--- a/server/crates/arbiter-server/tests/vault/storage.rs
+++ b/server/crates/arbiter-server/tests/vault/storage.rs
@@ -12,7 +12,7 @@ use std::collections::HashSet;
 
 #[tokio::test]
 #[test_log::test]
-async fn test_create_decrypt_roundtrip() {
+async fn create_decrypt_roundtrip() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
@@ -28,7 +28,7 @@ async fn test_create_decrypt_roundtrip() {
 
 #[tokio::test]
 #[test_log::test]
-async fn test_decrypt_nonexistent_returns_not_found() {
+async fn decrypt_nonexistent_returns_not_found() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
@@ -38,7 +38,7 @@ async fn test_decrypt_nonexistent_returns_not_found() {
 
 #[tokio::test]
 #[test_log::test]
-async fn test_ciphertext_differs_across_entries() {
+async fn ciphertext_differs_across_entries() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;
 
@@ -76,7 +76,7 @@ async fn test_ciphertext_differs_across_entries() {
 
 #[tokio::test]
 #[test_log::test]
-async fn test_nonce_never_reused() {
+async fn nonce_never_reused() {
     let db = db::create_test_pool().await;
     let mut actor = common::bootstrapped_vault(&db).await;