#![warn(missing_debug_implementations)]
#![warn(missing_docs)]
#![allow(explicit_outlives_requirements)]
+#![cfg_attr(not(bootstrap), warn(multiple_supertrait_upcastable))]
//
// Library features:
#![feature(alloc_layout_extra)]
#![feature(c_unwind)]
#![feature(with_negative_coherence)]
#![cfg_attr(test, feature(panic_update_hook))]
+#![cfg_attr(not(bootstrap), feature(multiple_supertrait_upcastable))]
//
// Rustdoc features:
#![feature(doc_cfg)]