message: Fix error message on NotFound;
diff: @@ -45,7 +45,7 @@ pub enum Error {
  #[cfg(feature = "backtraces")]
  backtrace: snafu::Backtrace,
  },
  - #[snafu(display("Item Not Found"))]
  + #[snafu(display("{} not found", kind))]
  NotFound {
  kind: &'static str,
  #[cfg(feature = "backtraces")]
  