error: non-static lifetimes are not allowed in the source of an error, because std::error::Error requires the source is dyn Error + 'static --> tests/ui/lifetime.rs:6:26 | 6 | struct Error<'a>(#[from] Inner<'a>); | ^^^^^^^^^ error: non-static lifetimes are not allowed in the source of an error, because std::error::Error requires the source is dyn Error + 'static --> tests/ui/lifetime.rs:15:17 | 15 | Foo(#[from] Generic<&'a str>), | ^^^^^^^^^^^^^^^^