make trait bound nicer

Author: mox692

tokio/src/runtime/driver/op.rs

@@ -34,7 +34,7 @@ pub(crate) enum State {
     Complete,
 }
 
-pub(crate) struct Op<T: Cancellable + Send + 'static> {
+pub(crate) struct Op<T: Cancellable> {
     // Handle to the runtime
     handle: Handle,
     // State of this Op
@@ -43,7 +43,7 @@ pub(crate) struct Op<T: Cancellable + Send + 'static> {
     data: Option<T>,
 }
 
-impl<T: Cancellable + Send + 'static> Op<T> {
+impl<T: Cancellable> Op<T> {
     /// # Safety
     ///
     /// Callers must ensure that parameters of the entry (such as buffer) are valid and will
@@ -62,7 +62,7 @@ impl<T: Cancellable + Send + 'static> Op<T> {
     }
 }
 
-impl<T: Cancellable + Send + 'static> Drop for Op<T> {
+impl<T: Cancellable> Drop for Op<T> {
     fn drop(&mut self) {
         match self.state {
             // We've already dropped this Op.
@@ -109,7 +109,7 @@ pub(crate) trait Cancellable {
     fn cancell(self) -> CancelData;
 }
 
-impl<T: Cancellable + Send + 'static> Unpin for Op<T> {}
+impl<T: Cancellable> Unpin for Op<T> {}
 
 impl<T: Cancellable + Completable + Send> Future for Op<T> {
     type Output = io::Result<T::Output>;

tokio/src/runtime/io/driver/uring.rs

@@ -168,7 +168,7 @@ impl Handle {
 
     // TODO: Remove this annotation when operations are actually supported
     #[allow(unused_variables, unreachable_code)]
-    pub(crate) fn cancel_op<T: Cancellable + Send + 'static>(&self, index: usize, data: Option<T>) {
+    pub(crate) fn cancel_op<T: Cancellable>(&self, index: usize, data: Option<T>) {
         let mut guard = self.get_uring().lock();
         let ctx = &mut *guard;
         let ops = &mut ctx.ops;