fix clippy error

Author: loongs-zhang

.github/workflows/ci.yml

@@ -13,6 +13,7 @@ on:
 env:
   RUST_TOOLCHAIN: nightly
   TOOLCHAIN_PROFILE: minimal
+  CARGO_TERM_COLOR: always
 
 jobs:
   lints:

.gitignore

@@ -6,4 +6,7 @@ coredump*
 /coverage
 
 # visual studio code files
-.vscode
+.vscode
+
+# idea files
+.idea

monoio/src/driver/uring/lifecycle.rs

@@ -17,6 +17,7 @@ pub(crate) enum Lifecycle {
 
     /// The submitter no longer has interest in the operation result. The state
     /// must be passed to the driver and held until the operation completes.
+    #[allow(dead_code)]
     Ignored(Box<dyn std::any::Any>),
 
     /// The operation has completed.