thiserror 1.0.21 on Rust Cargo

Support capturing backtraces inside of Arc from a From impl, which makes it possible for errors having backtraces to be clonable (#102)

use std::backtrace::Backtrace;
use std::sync::Arc;
use thiserror::Error;

#[derive(Error, Debug, Clone)]
#[error("...")]
pub struct ClonableErrorWithBacktrace {
    #[from]
    source: Inner,
    #[backtrace]
    backtrace: Arc<Backtrace>,
}