diff --git a/crates/e2e_test/src/reliant/get_deleted_object_test.rs b/crates/e2e_test/src/reliant/get_deleted_object_test.rs
index 71df0858..b34159ec 100644
--- a/crates/e2e_test/src/reliant/get_deleted_object_test.rs
+++ b/crates/e2e_test/src/reliant/get_deleted_object_test.rs
@@ -127,12 +127,12 @@ async fn test_get_deleted_object_returns_nosuchkey() -> Result<(), Box<dyn std::
             info!("Service error code: {:?}", s3_err.meta().code());
 
             // The error should be NoSuchKey
-            assert!(s3_err.is_no_such_key(), "Error should be NoSuchKey, got: {:?}", s3_err);
+            assert!(s3_err.is_no_such_key(), "Error should be NoSuchKey, got: {s3_err:?}");
 
             info!("✅ Test passed: GetObject on deleted object correctly returns NoSuchKey");
         }
         other_err => {
-            panic!("Expected ServiceError with NoSuchKey, but got: {:?}", other_err);
+            panic!("Expected ServiceError with NoSuchKey, but got: {other_err:?}");
         }
     }
 
@@ -182,13 +182,12 @@ async fn test_head_deleted_object_returns_nosuchkey() -> Result<(), Box<dyn std:
             let s3_err = service_err.into_err();
             assert!(
                 s3_err.meta().code() == Some("NoSuchKey") || s3_err.meta().code() == Some("NotFound"),
-                "Error should be NoSuchKey or NotFound, got: {:?}",
-                s3_err
+                "Error should be NoSuchKey or NotFound, got: {s3_err:?}"
             );
             info!("✅ HeadObject correctly returns NoSuchKey/NotFound");
         }
         other_err => {
-            panic!("Expected ServiceError but got: {:?}", other_err);
+            panic!("Expected ServiceError but got: {other_err:?}");
         }
     }
 
@@ -220,11 +219,11 @@ async fn test_get_nonexistent_object_returns_nosuchkey() -> Result<(), Box<dyn s
     match get_result.unwrap_err() {
         SdkError::ServiceError(service_err) => {
             let s3_err = service_err.into_err();
-            assert!(s3_err.is_no_such_key(), "Error should be NoSuchKey, got: {:?}", s3_err);
+            assert!(s3_err.is_no_such_key(), "Error should be NoSuchKey, got: {s3_err:?}");
             info!("✅ GetObject correctly returns NoSuchKey for non-existent object");
         }
         other_err => {
-            panic!("Expected ServiceError with NoSuchKey, but got: {:?}", other_err);
+            panic!("Expected ServiceError with NoSuchKey, but got: {other_err:?}");
         }
     }
 
@@ -266,15 +265,15 @@ async fn test_multiple_gets_deleted_object() -> Result<(), Box<dyn std::error::E
         info!("Attempt {} to get deleted object", i);
         let get_result = client.get_object().bucket(BUCKET).key(key).send().await;
 
-        assert!(get_result.is_err(), "Attempt {}: should return error", i);
+        assert!(get_result.is_err(), "Attempt {i}: should return error");
 
         match get_result.unwrap_err() {
             SdkError::ServiceError(service_err) => {
                 let s3_err = service_err.into_err();
-                assert!(s3_err.is_no_such_key(), "Attempt {}: Error should be NoSuchKey, got: {:?}", i, s3_err);
+                assert!(s3_err.is_no_such_key(), "Attempt {i}: Error should be NoSuchKey, got: {s3_err:?}");
             }
             other_err => {
-                panic!("Attempt {}: Expected ServiceError but got: {:?}", i, other_err);
+                panic!("Attempt {i}: Expected ServiceError but got: {other_err:?}");
             }
         }
     }
diff --git a/crates/e2e_test/src/special_chars_test.rs b/crates/e2e_test/src/special_chars_test.rs
index 157ec270..60a80fdd 100644
--- a/crates/e2e_test/src/special_chars_test.rs
+++ b/crates/e2e_test/src/special_chars_test.rs
@@ -256,7 +256,7 @@ mod tests {
 
             let output = result.unwrap();
             let body_bytes = output.body.collect().await.unwrap().into_bytes();
-            assert_eq!(body_bytes.as_ref(), *content, "Content mismatch for key '{}'", key);
+            assert_eq!(body_bytes.as_ref(), *content, "Content mismatch for key '{key}'");
 
             info!("✅ PUT/GET succeeded for key: {}", key);
         }
@@ -472,7 +472,7 @@ mod tests {
         info!("Testing COPY from '{}' to '{}'", src_key, dest_key);
 
         // COPY object
-        let copy_source = format!("{}/{}", bucket, src_key);
+        let copy_source = format!("{bucket}/{src_key}");
         let result = client
             .copy_object()
             .bucket(bucket)
@@ -543,7 +543,7 @@ mod tests {
 
             let output = result.unwrap();
             let body_bytes = output.body.collect().await.unwrap().into_bytes();
-            assert_eq!(body_bytes.as_ref(), *content, "Content mismatch for Unicode key '{}'", key);
+            assert_eq!(body_bytes.as_ref(), *content, "Content mismatch for Unicode key '{key}'");
 
             info!("✅ PUT/GET succeeded for Unicode key: {}", key);
         }
@@ -610,7 +610,7 @@ mod tests {
 
             let output = result.unwrap();
             let body_bytes = output.body.collect().await.unwrap().into_bytes();
-            assert_eq!(body_bytes.as_ref(), *content, "Content mismatch for key '{}'", key);
+            assert_eq!(body_bytes.as_ref(), *content, "Content mismatch for key '{key}'");
 
             info!("✅ PUT/GET succeeded for key: {}", key);
         }
@@ -658,7 +658,7 @@ mod tests {
             // Note: The validation happens on the server side, so we expect an error
             // For null byte, newline, and carriage return
             if key.contains('\0') || key.contains('\n') || key.contains('\r') {
-                assert!(result.is_err(), "Control character should be rejected for key: {:?}", key);
+                assert!(result.is_err(), "Control character should be rejected for key: {key:?}");
                 if let Err(e) = result {
                     info!("✅ Control character correctly rejected: {:?}", e);
                 }
diff --git a/crates/protos/src/main.rs b/crates/protos/src/main.rs
index fe18772a..95d6d79e 100644
--- a/crates/protos/src/main.rs
+++ b/crates/protos/src/main.rs
@@ -46,7 +46,7 @@ fn main() -> Result<(), AnyError> {
     };
 
     if !need_compile {
-        println!("no need to compile protos.{}", need_compile);
+        println!("no need to compile protos.{need_compile}");
         return Ok(());
     }
 
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 86cba4f7..348f24f9 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -13,5 +13,5 @@
 # limitations under the License.
 
 [toolchain]
-channel = "stable"
+channel = "1.88"
 components = ["rustfmt", "clippy", "rust-src", "rust-analyzer"]
diff --git a/rustfs/src/admin/handlers.rs b/rustfs/src/admin/handlers.rs
index b3fa0019..6f2636a7 100644
--- a/rustfs/src/admin/handlers.rs
+++ b/rustfs/src/admin/handlers.rs
@@ -1328,8 +1328,7 @@ impl Operation for ProfileHandler {
             let target_arch = std::env::consts::ARCH;
             let target_env = option_env!("CARGO_CFG_TARGET_ENV").unwrap_or("unknown");
             let msg = format!(
-                "CPU profiling is not supported on this platform. target_os={}, target_env={}, target_arch={}, requested_url={}",
-                target_os, target_env, target_arch, requested_url
+                "CPU profiling is not supported on this platform. target_os={target_os}, target_env={target_env}, target_arch={target_arch}, requested_url={requested_url}"
             );
             return Ok(S3Response::new((StatusCode::NOT_IMPLEMENTED, Body::from(msg))));
         }
diff --git a/rustfs/src/profiling.rs b/rustfs/src/profiling.rs
index e237330c..a4c5ce8b 100644
--- a/rustfs/src/profiling.rs
+++ b/rustfs/src/profiling.rs
@@ -38,8 +38,7 @@ fn get_platform_info() -> (String, String, String) {
 pub async fn dump_cpu_pprof_for(_duration: std::time::Duration) -> Result<std::path::PathBuf, String> {
     let (target_os, target_env, target_arch) = get_platform_info();
     let msg = format!(
-        "CPU profiling is not supported on this platform. target_os={}, target_env={}, target_arch={}",
-        target_os, target_env, target_arch
+        "CPU profiling is not supported on this platform. target_os={target_os}, target_env={target_env}, target_arch={target_arch}"
     );
     Err(msg)
 }
@@ -48,8 +47,7 @@ pub async fn dump_cpu_pprof_for(_duration: std::time::Duration) -> Result<std::p
 pub async fn dump_memory_pprof_now() -> Result<std::path::PathBuf, String> {
     let (target_os, target_env, target_arch) = get_platform_info();
     let msg = format!(
-        "Memory profiling is not supported on this platform. target_os={}, target_env={}, target_arch={}",
-        target_os, target_env, target_arch
+        "Memory profiling is not supported on this platform. target_os={target_os}, target_env={target_env}, target_arch={target_arch}"
     );
     Err(msg)
 }
diff --git a/rustfs/src/storage/concurrency.rs b/rustfs/src/storage/concurrency.rs
index 410bf055..4ab95135 100644
--- a/rustfs/src/storage/concurrency.rs
+++ b/rustfs/src/storage/concurrency.rs
@@ -1165,12 +1165,12 @@ impl HotObjectCache {
     #[allow(dead_code)]
     async fn invalidate_versioned(&self, bucket: &str, key: &str, version_id: Option<&str>) {
         // Always invalidate the latest version key
-        let base_key = format!("{}/{}", bucket, key);
+        let base_key = format!("{bucket}/{key}");
         self.invalidate(&base_key).await;
 
         // Also invalidate the specific version if provided
         if let Some(vid) = version_id {
-            let versioned_key = format!("{}?versionId={}", base_key, vid);
+            let versioned_key = format!("{base_key}?versionId={vid}");
             self.invalidate(&versioned_key).await;
         }
     }
@@ -1625,8 +1625,8 @@ impl ConcurrencyManager {
     /// Cache key string
     pub fn make_cache_key(bucket: &str, key: &str, version_id: Option<&str>) -> String {
         match version_id {
-            Some(vid) => format!("{}/{}?versionId={}", bucket, key, vid),
-            None => format!("{}/{}", bucket, key),
+            Some(vid) => format!("{bucket}/{key}?versionId={vid}"),
+            None => format!("{bucket}/{key}"),
         }
     }
 
@@ -1728,7 +1728,7 @@ mod tests {
         // Fill cache with objects
         for i in 0..200 {
             let data = vec![0u8; 64 * KI_B];
-            cache.put(format!("key_{}", i), data).await;
+            cache.put(format!("key_{i}"), data).await;
         }
 
         let stats = cache.stats().await;
@@ -1785,8 +1785,7 @@ mod tests {
         let result = get_advanced_buffer_size(32 * KI_B as i64, 256 * KI_B, true);
         assert!(
             (16 * KI_B..=64 * KI_B).contains(&result),
-            "Small files should use reduced buffer: {}",
-            result
+            "Small files should use reduced buffer: {result}"
         );
     }
 
diff --git a/rustfs/src/storage/concurrent_get_object_test.rs b/rustfs/src/storage/concurrent_get_object_test.rs
index 844e1c80..df13d208 100644
--- a/rustfs/src/storage/concurrent_get_object_test.rs
+++ b/rustfs/src/storage/concurrent_get_object_test.rs
@@ -214,9 +214,7 @@ mod tests {
             // Allow widened range due to parallel test execution affecting global counter
             assert!(
                 (64 * KI_B..=MI_B).contains(&buffer_size),
-                "{}: buffer should be in valid range 64KB-1MB, got {} bytes",
-                description,
-                buffer_size
+                "{description}: buffer should be in valid range 64KB-1MB, got {buffer_size} bytes"
             );
         }
     }
@@ -229,22 +227,20 @@ mod tests {
         let min_buffer = get_concurrency_aware_buffer_size(small_file, 64 * KI_B);
         assert!(
             min_buffer >= 32 * KI_B,
-            "Buffer should have minimum size of 32KB for tiny files, got {}",
-            min_buffer
+            "Buffer should have minimum size of 32KB for tiny files, got {min_buffer}"
         );
 
         // Test maximum buffer size (capped at 1MB when base is reasonable)
         let huge_file = 10 * 1024 * MI_B as i64; // 10GB file
         let max_buffer = get_concurrency_aware_buffer_size(huge_file, MI_B);
-        assert!(max_buffer <= MI_B, "Buffer should not exceed 1MB cap when requested, got {}", max_buffer);
+        assert!(max_buffer <= MI_B, "Buffer should not exceed 1MB cap when requested, got {max_buffer}");
 
         // Test buffer size scaling with base - when base is small, result respects the limits
         let medium_file = 200 * KI_B as i64; // 200KB file (>100KB so minimum is 64KB)
         let buffer = get_concurrency_aware_buffer_size(medium_file, 128 * KI_B);
         assert!(
             (64 * KI_B..=MI_B).contains(&buffer),
-            "Buffer should be between 64KB and 1MB, got {}",
-            buffer
+            "Buffer should be between 64KB and 1MB, got {buffer}"
         );
     }
 
@@ -271,7 +267,7 @@ mod tests {
 
         let elapsed = start.elapsed();
         // With 64 permits, 10 concurrent tasks should complete quickly
-        assert!(elapsed < Duration::from_secs(1), "Should complete within 1 second, took {:?}", elapsed);
+        assert!(elapsed < Duration::from_secs(1), "Should complete within 1 second, took {elapsed:?}");
     }
 
     /// Test Moka cache operations: insert, retrieve, stats, and clear.
@@ -373,7 +369,7 @@ mod tests {
         let num_objects = 20; // Total 120MB > 100MB limit
 
         for i in 0..num_objects {
-            let key = format!("test/object{}", i);
+            let key = format!("test/object{i}");
             let data = vec![i as u8; object_size];
             manager.cache_object(key, data).await;
             sleep(Duration::from_millis(10)).await; // Give Moka time to process
@@ -407,7 +403,7 @@ mod tests {
 
         // Cache multiple objects
         for i in 0..10 {
-            let key = format!("batch/object{}", i);
+            let key = format!("batch/object{i}");
             let data = vec![i as u8; 100 * KI_B]; // 100KB each
             manager.cache_object(key, data).await;
         }
@@ -415,14 +411,14 @@ mod tests {
         sleep(Duration::from_millis(100)).await;
 
         // Test batch get
-        let keys: Vec<String> = (0..10).map(|i| format!("batch/object{}", i)).collect();
+        let keys: Vec<String> = (0..10).map(|i| format!("batch/object{i}")).collect();
         let results = manager.get_cached_batch(&keys).await;
 
         assert_eq!(results.len(), 10, "Should return result for each key");
 
         // Verify all objects were retrieved
         let hits = results.iter().filter(|r| r.is_some()).count();
-        assert!(hits >= 8, "Most objects should be cached (got {}/10 hits)", hits);
+        assert!(hits >= 8, "Most objects should be cached (got {hits}/10 hits)");
 
         // Mix of existing and non-existing keys
         let mixed_keys = vec![
@@ -442,7 +438,7 @@ mod tests {
 
         // Prepare objects for warming
         let objects: Vec<(String, Vec<u8>)> = (0..5)
-            .map(|i| (format!("warm/object{}", i), vec![i as u8; 500 * KI_B]))
+            .map(|i| (format!("warm/object{i}"), vec![i as u8; 500 * KI_B]))
             .collect();
 
         // Warm cache
@@ -452,8 +448,8 @@ mod tests {
         // Verify all objects are cached
         for (key, data) in objects {
             let cached = manager.get_cached(&key).await;
-            assert!(cached.is_some(), "Warmed object {} should be cached", key);
-            assert_eq!(*cached.unwrap(), data, "Cached data for {} should match", key);
+            assert!(cached.is_some(), "Warmed object {key} should be cached");
+            assert_eq!(*cached.unwrap(), data, "Cached data for {key} should match");
         }
 
         let stats = manager.cache_stats().await;
@@ -467,7 +463,7 @@ mod tests {
 
         // Cache objects with different access patterns
         for i in 0..5 {
-            let key = format!("hot/object{}", i);
+            let key = format!("hot/object{i}");
             let data = vec![i as u8; 100 * KI_B];
             manager.cache_object(key, data).await;
         }
@@ -540,19 +536,15 @@ mod tests {
         let small_size = get_advanced_buffer_size(128 * KI_B as i64, base_buffer, false);
         assert!(
             small_size < base_buffer,
-            "Small files should use smaller buffers: {} < {}",
-            small_size,
-            base_buffer
+            "Small files should use smaller buffers: {small_size} < {base_buffer}"
         );
-        assert!(small_size >= 16 * KI_B, "Should not go below minimum: {}", small_size);
+        assert!(small_size >= 16 * KI_B, "Should not go below minimum: {small_size}");
 
         // Test sequential read optimization
         let seq_size = get_advanced_buffer_size(32 * MI_B as i64, base_buffer, true);
         assert!(
             seq_size >= base_buffer,
-            "Sequential reads should use larger buffers: {} >= {}",
-            seq_size,
-            base_buffer
+            "Sequential reads should use larger buffers: {seq_size} >= {base_buffer}"
         );
 
         // Test large file with high concurrency
@@ -560,9 +552,7 @@ mod tests {
         let large_concurrent = get_advanced_buffer_size(100 * MI_B as i64, base_buffer, false);
         assert!(
             large_concurrent <= base_buffer,
-            "High concurrency should reduce buffer: {} <= {}",
-            large_concurrent,
-            base_buffer
+            "High concurrency should reduce buffer: {large_concurrent} <= {base_buffer}"
         );
     }
 
@@ -573,7 +563,7 @@ mod tests {
 
         // Pre-populate cache
         for i in 0..20 {
-            let key = format!("concurrent/object{}", i);
+            let key = format!("concurrent/object{i}");
             let data = vec![i as u8; 100 * KI_B];
             manager.cache_object(key, data).await;
         }
@@ -602,8 +592,7 @@ mod tests {
         // Moka's lock-free design should handle this quickly
         assert!(
             elapsed < Duration::from_millis(500),
-            "Concurrent cache access should be fast (took {:?})",
-            elapsed
+            "Concurrent cache access should be fast (took {elapsed:?})"
         );
     }
 
@@ -637,7 +626,7 @@ mod tests {
 
         // Cache some objects
         for i in 0..5 {
-            let key = format!("hitrate/object{}", i);
+            let key = format!("hitrate/object{i}");
             let data = vec![i as u8; 100 * KI_B];
             manager.cache_object(key, data).await;
         }
@@ -647,16 +636,16 @@ mod tests {
         // Mix of hits and misses
         for i in 0..10 {
             let key = if i < 5 {
-                format!("hitrate/object{}", i) // Hit
+                format!("hitrate/object{i}") // Hit
             } else {
-                format!("hitrate/missing{}", i) // Miss
+                format!("hitrate/missing{i}") // Miss
             };
             let _ = manager.get_cached(&key).await;
         }
 
         // Hit rate should be around 50%
         let hit_rate = manager.cache_hit_rate();
-        assert!((40.0..=60.0).contains(&hit_rate), "Hit rate should be ~50%, got {:.1}%", hit_rate);
+        assert!((40.0..=60.0).contains(&hit_rate), "Hit rate should be ~50%, got {hit_rate:.1}%");
     }
 
     /// Test TTL expiration (Moka automatic cleanup)
@@ -688,7 +677,7 @@ mod tests {
 
         // Pre-populate
         for i in 0..50 {
-            let key = format!("bench/object{}", i);
+            let key = format!("bench/object{i}");
             let data = vec![i as u8; 500 * KI_B];
             manager.cache_object(key, data).await;
         }
@@ -1224,14 +1213,13 @@ mod tests {
         // Average should be around 20ms
         assert!(
             avg >= Duration::from_millis(15) && avg <= Duration::from_millis(25),
-            "Average should be around 20ms, got {:?}",
-            avg
+            "Average should be around 20ms, got {avg:?}"
         );
 
         // Max should be 30ms
         assert_eq!(max, Duration::from_millis(30), "Max should be 30ms");
 
         // P95 should be at or near 30ms
-        assert!(p95 >= Duration::from_millis(25), "P95 should be near 30ms, got {:?}", p95);
+        assert!(p95 >= Duration::from_millis(25), "P95 should be near 30ms, got {p95:?}");
     }
 }
diff --git a/rustfs/src/storage/ecfs.rs b/rustfs/src/storage/ecfs.rs
index 5000053a..0d41cb70 100644
--- a/rustfs/src/storage/ecfs.rs
+++ b/rustfs/src/storage/ecfs.rs
@@ -465,7 +465,7 @@ fn validate_object_key(key: &str, operation: &str) -> S3Result<()> {
     if key.contains(['\0', '\n', '\r']) {
         return Err(S3Error::with_message(
             S3ErrorCode::InvalidArgument,
-            format!("Object key contains invalid control characters: {:?}", key),
+            format!("Object key contains invalid control characters: {key:?}"),
         ));
     }
 
@@ -2152,7 +2152,7 @@ impl S3 for FS {
             let mut buf = Vec::with_capacity(response_content_length as usize);
             if let Err(e) = tokio::io::AsyncReadExt::read_to_end(&mut final_stream, &mut buf).await {
                 error!("Failed to read object into memory for caching: {}", e);
-                return Err(ApiError::from(StorageError::other(format!("Failed to read object for caching: {}", e))).into());
+                return Err(ApiError::from(StorageError::other(format!("Failed to read object for caching: {e}"))).into());
             }
 
             // Verify we read the expected amount