errlanes 0.17.2

Four error lanes (Rejected/Denied/Transient/Fatal) carried in the type, not re-derived at every layer
Documentation 
1
2
3
4
5
6
7
8
9

#[test]
fn transitive_composition_and_inferred_conversions() {
    composition_consumer::check();
}

#[test]
fn union_composition_crosses_crates_and_renamed_dependencies() {
    composition_consumer::check_union();
}