use std::any::{Demand, Provider}; pub trait ThiserrorProvide: Sealed { fn thiserror_provide<'a>(&'a self, demand: &mut Demand<'a>); } impl ThiserrorProvide for T { #[inline] fn thiserror_provide<'a>(&'a self, demand: &mut Demand<'a>) { self.provide(demand); } } pub trait Sealed {} impl Sealed for T {}