use super::Error;
use crate::fmt;
+use core::any::Demand;
#[derive(Debug, PartialEq)]
struct A;
self.source.as_deref()
}
- fn backtrace(&self) -> Option<&Backtrace> {
- self.backtrace.as_ref()
+ fn provide<'a>(&'a self, req: &mut Demand<'a>) {
+ self.backtrace.as_ref().map(|bt| req.provide_ref::<Backtrace>(bt));
}
}