add patch for 29ef6cf

mapping.rs

@@ -1628,3 +1628,4 @@
 -Mapping("c0b64d97beebb09325b5587abed39f4f1621026f","8a18fb0f7396ceb1ca18cd82ca3deb795f5e60b2")
 -Mapping("175631311716d7dfeceec40d2587cde7142ffa8c","dd8f07223346b06da723c25a3ac42f874e6c945c")
 -Mapping("9b471a3f5fe57e5c6e08acf665f2094422415a3d","250eeb4c3c00b7831226cf5266aacb5fca1e13f3")
+-Mapping("29ef6cf1637aa8317f8911f93f14e18d404c1b0e","3eee91b40349fc4749026ca353d91d60d2c85c28")

src/lib.rs

@@ -3,8 +3,8 @@
 //! the [std documentation](https://doc.rust-lang.org/nightly/std/io/index.html)
 //! for a full description of the functionality.
 #![allow(stable_features,unused_features,incomplete_features)]
-#![feature(question_mark,const_fn,copy_from_slice,try_from,str_internals,align_offset,
-       doc_spotlight,slice_internals,maybe_uninit_ref,mem_take,specialization)]
+#![feature(question_mark,const_fn_trait_bound,copy_from_slice,try_from,str_internals,align_offset,
+       doc_notable_trait,slice_internals,maybe_uninit_ref,mem_take,specialization)]
 #![cfg_attr(any(feature="alloc",feature="collections"),feature(alloc,allocator_api))]
 #![cfg_attr(feature="collections",feature(vec_spare_capacity,maybe_uninit_slice,
                                           new_uninit,debug_non_exhaustive))]