From c75e91618b739cac17e8bf9c692955b095fab200 Mon Sep 17 00:00:00 2001
From: whitequark <pz@m-labs.hk>
Date: Fri, 5 Jan 2018 20:05:31 +0000
Subject: [PATCH] Update README.

---
 README.md | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 8c00f7b..7ce79f9 100644
--- a/README.md
+++ b/README.md
@@ -101,11 +101,10 @@ pub enum ManagedSlice<'a, T: 'a> {
     Owned(Vec<T>)
 }
 
+// The implementation of ManagedMap is not yet stable, beware!
 pub enum ManagedMap<'a, K: Hash + 'a, V: 'a> {
-    /// Borrowed variant.
     Borrowed(&'a mut [(K, V)]),
-    /// Owned variant, only available with the `std` or `alloc` feature enabled.
-    #[cfg(any(feature = "std", feature = "alloc"))]
+    #[cfg(/* BTreeMap available */)]
     Owned(BTreeMap<K, V>)
 }
 ```