read_buf

library/std/src/lib.rs

@@ -306,6 +306,7 @@
 #![feature(maybe_uninit_extra)]
 #![feature(maybe_uninit_slice)]
 #![feature(maybe_uninit_uninit_array)]
+#![feature(maybe_uninit_write_slice)]
 #![feature(min_specialization)]
 #![feature(mixed_integer_ops)]
 #![feature(must_not_suspend)]
@@ -321,6 +322,7 @@
 #![feature(panic_unwind)]
 #![feature(pin_static_ref)]
 #![feature(prelude_import)]
+#![feature(ptr_as_uninit)]
 #![feature(ptr_internals)]
 #![feature(rustc_attrs)]
 #![feature(rustc_private)]