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#![feature(staged_api)]
//~^ ERROR module has missing stability attribute
#[stable(feature = "a", since = "1")]
struct StableType;
#[unstable(feature = "b", issue = "none")]
struct UnstableType;
#[stable(feature = "c", since = "1")]
trait StableTrait {}
#[unstable(feature = "d", issue = "none")]
trait UnstableTrait {}
#[unstable(feature = "e", issue = "none")]
impl UnstableTrait for UnstableType {}
#[unstable(feature = "f", issue = "none")]
impl StableTrait for UnstableType {}
#[unstable(feature = "g", issue = "none")]
impl UnstableTrait for StableType {}
#[unstable(feature = "h", issue = "none")]
//~^ ERROR an `#[unstable]` annotation here has no effect [ineffective_unstable_trait_impl]
impl StableTrait for StableType {}
fn main() {}
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