style: apply cargo fmt and clippy fixes

Author: pplmx

crates/core/src/scheduler/cache/mod.rs

@@ -1,7 +1,7 @@
 pub mod prefix_cache;
 
 pub use prefix_cache::{
-    hash_tokens, CacheKey, CachedEntry, PrefixCache, PrefixCacheConfig, PrefixCacheStats,
+    CacheKey, CachedEntry, PrefixCache, PrefixCacheConfig, PrefixCacheStats, hash_tokens,
 };
 
 /// Cache manager for prefix caching of KV blocks.

crates/core/tests/prefix_cache.rs

@@ -1,6 +1,6 @@
 use tokio::sync::mpsc;
 use vllm_core::engine::Engine;
-use vllm_core::kv_cache::{hash_tokens, BlockAllocator, PrefixCache};
+use vllm_core::kv_cache::{BlockAllocator, PrefixCache, hash_tokens};
 use vllm_core::types::{Request, SchedulerConfig, SeqId, TokenId};
 use vllm_testing::StubModel;
 

crates/core/tests/scheduler_integration.rs

@@ -1,5 +1,5 @@
-use vllm_core::scheduler::policy::SjfPolicy;
 use vllm_core::scheduler::SchedulerEngine;
+use vllm_core::scheduler::policy::SjfPolicy;
 use vllm_core::types::{Request, SchedulerConfig};
 use vllm_traits::BatchPhase;