cargo::core::resolver::errors

Function activation_error

Source 
pub(super) fn activation_error(
    resolver_ctx: &ResolverContext,
    registry: &mut dyn Registry,
    parent: &Summary,
    dep: &Dependency,
    conflicting_activations: &BTreeMap<PackageId, ConflictReason>,
    candidates: &[Summary],
    gctx: Option<&GlobalContext>,
) -> ResolveError