remove `Send` trait requirement from the `Resource` trait
@@ -80,8 +80,8 @@ impl ResourceTable {
/// The only thing it does is implementing `Downcast` trait
/// that allows to cast resource to concrete type in `TableResource::get`
/// and `TableResource::get_mut` methods.
-pub trait Resource: Downcast + Any + Send {}
-impl<T> Resource for T where T: Downcast + Any + Send {}
+pub trait Resource: Downcast + Any {}
+impl<T> Resource for T where T: Downcast + Any {}
impl_downcast!(Resource);
#[cfg(test)]
