fix missing import

Author: treysidechain

Cargo.lock

@@ -24,7 +24,7 @@ mysql_common = {version = "0.29.0", optional = true}
 bb8 = {version = "0.8", optional = true}
 deadpool = {version = "0.9", optional = true}
 mobc = {version = "0.7", optional = true}
-scoped-futures = { rev = "362cd58", git = "https://github.com/sidechainme/scoped-futures", features = [] }
+scoped-futures = { rev = "362cd58", git = "https://github.com/sidechainme/scoped-futures", features = ["std"] }
 
 [dev-dependencies]
 tokio = {version = "1.12.0", features = ["rt", "macros", "rt-multi-thread"]}

Cargo.toml

@@ -1,6 +1,6 @@
 use diesel::result::Error;
 use diesel::QueryResult;
-use scoped_futures::ScopedFuture;
+use scoped_futures::ScopedBoxFuture;
 use std::borrow::Cow;
 use std::num::NonZeroU32;