X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=library%2Fcore%2Fsrc%2Flib.rs;h=ab29f7bdeebdf613325dce81a4d0323e01f981cf;hb=d08af68f229e6e79eae3460046a17cccebcd577f;hp=1823fd3006279d1c7bacddb75892b04b3fd93204;hpb=90711a86e5bdd4b0b65d293f0c2c48fd2db761b3;p=rust.git

diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs
index 1823fd30062..ab29f7bdeeb 100644
--- a/library/core/src/lib.rs
+++ b/library/core/src/lib.rs
@@ -95,6 +95,7 @@
 #![warn(missing_docs)]
 #![allow(explicit_outlives_requirements)]
 #![allow(incomplete_features)]
+#![cfg_attr(not(bootstrap), warn(multiple_supertrait_upcastable))]
 //
 // Library features:
 #![feature(const_align_offset)]
@@ -194,7 +195,7 @@
 #![feature(const_refs_to_cell)]
 #![feature(decl_macro)]
 #![feature(deprecated_suggestion)]
-#![cfg_attr(not(bootstrap), feature(derive_const))]
+#![feature(derive_const)]
 #![feature(doc_cfg)]
 #![feature(doc_notable_trait)]
 #![feature(rustdoc_internals)]
@@ -231,6 +232,7 @@
 #![feature(unsized_fn_params)]
 #![feature(asm_const)]
 #![feature(const_transmute_copy)]
+#![cfg_attr(not(bootstrap), feature(multiple_supertrait_upcastable))]
 //
 // Target features:
 #![feature(arm_target_feature)]