try_v2 0.10.0

Provides a derive macro & helper traits for `Try`
Documentation 
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use build_safely::prelude::*;

fn main() -> Result<()> {
    let ac = autocfg::new();

    let allowed_features = cargo_allowed_features()?;
    ac.emit_unstable_feature(never_type, &allowed_features);
    ac.emit_unstable_feature(try_trait_v2, &allowed_features);
    ac.emit_unstable_feature(try_trait_v2_residual, &allowed_features);
    Ok(())
}