diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs
index 53a79217241ba..5368c1d0dc57b 100644
--- a/src/liballoc/lib.rs
+++ b/src/liballoc/lib.rs
@@ -70,7 +70,6 @@
 
 #![no_std]
 #![feature(phase, unsafe_destructor)]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
 
 #[phase(plugin, link)]
 extern crate core;
diff --git a/src/libarena/lib.rs b/src/libarena/lib.rs
index 5ddb088c8c840..ee1e0fd72cfe1 100644
--- a/src/libarena/lib.rs
+++ b/src/libarena/lib.rs
@@ -30,7 +30,6 @@
 
 #![feature(unsafe_destructor)]
 #![allow(missing_doc)]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
 
 use std::cell::{Cell, RefCell};
 use std::cmp;
diff --git a/src/libcollections/lib.rs b/src/libcollections/lib.rs
index ca7de131dc212..c5b8704439850 100644
--- a/src/libcollections/lib.rs
+++ b/src/libcollections/lib.rs
@@ -24,7 +24,6 @@
 #![feature(macro_rules, managed_boxes, default_type_params, phase, globs)]
 #![feature(unsafe_destructor)]
 #![no_std]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
 
 #[phase(plugin, link)] extern crate core;
 extern crate alloc;
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index 3d2382e6208b4..75663d66e612b 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -57,7 +57,6 @@
 #![no_std]
 #![feature(globs, macro_rules, managed_boxes, phase, simd, unsafe_destructor)]
 #![deny(missing_doc)]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
 
 #[cfg(test)] extern crate realcore = "core";
 #[cfg(test)] extern crate libc;
diff --git a/src/libnative/lib.rs b/src/libnative/lib.rs
index b44673a24ef05..48d03e4184846 100644
--- a/src/libnative/lib.rs
+++ b/src/libnative/lib.rs
@@ -54,15 +54,12 @@
        html_root_url = "http://doc.rust-lang.org/")]
 
 #![deny(unused_result, unused_must_use)]
-#![allow(non_camel_case_types)]
-#![allow(deprecated)]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
-#![feature(default_type_params)]
+#![allow(non_camel_case_types, deprecated)]
 
 // NB this crate explicitly does *not* allow glob imports, please seriously
 //    consider whether they're needed before adding that feature here (the
 //    answer is that you don't need them)
-#![feature(macro_rules, unsafe_destructor)]
+#![feature(macro_rules, unsafe_destructor, default_type_params)]
 
 extern crate alloc;
 extern crate libc;
diff --git a/src/librustc/lib.rs b/src/librustc/lib.rs
index e311d1e9b15bb..34e70f4eb1a82 100644
--- a/src/librustc/lib.rs
+++ b/src/librustc/lib.rs
@@ -29,7 +29,6 @@ This API is completely unstable and subject to change.
       html_root_url = "http://doc.rust-lang.org/")]
 
 #![allow(deprecated)]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
 #![feature(macro_rules, globs, struct_variant, managed_boxes, quote)]
 #![feature(default_type_params, phase, unsafe_destructor)]
 
diff --git a/src/librustrt/lib.rs b/src/librustrt/lib.rs
index f5521886f52df..3fdbc96260326 100644
--- a/src/librustrt/lib.rs
+++ b/src/librustrt/lib.rs
@@ -20,7 +20,6 @@
 #![feature(linkage, unsafe_destructor)]
 #![no_std]
 #![experimental]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
 
 #[phase(plugin, link)] extern crate core;
 extern crate alloc;
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index a99fa016aef1d..03e90bf1089c6 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -112,7 +112,6 @@
 
 #![allow(deprecated)]
 #![deny(missing_doc)]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
 
 // When testing libstd, bring in libuv as the I/O backend so tests can print
 // things and all of the std::io tests have an I/O interface to run on top
diff --git a/src/libsync/lib.rs b/src/libsync/lib.rs
index a2f22bcaa6816..beb75bab3f6ab 100644
--- a/src/libsync/lib.rs
+++ b/src/libsync/lib.rs
@@ -30,7 +30,6 @@
 #![feature(phase, globs, macro_rules, unsafe_destructor)]
 #![deny(missing_doc)]
 #![no_std]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
 
 #[phase(plugin, link)] extern crate core;
 extern crate alloc;
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 1fbc6e41e55c9..0d6821fb30c08 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -30,7 +30,6 @@ This API is completely unstable and subject to change.
 #![feature(macro_rules, globs, managed_boxes, default_type_params, phase)]
 #![feature(quote, unsafe_destructor)]
 #![allow(deprecated)]
-#![allow(unknown_features)] // NOTE: remove after a stage0 snap
 
 extern crate serialize;
 extern crate term;
diff --git a/src/snapshots.txt b/src/snapshots.txt
index e46c99cf4f0dd..ac11d94d2e604 100644
--- a/src/snapshots.txt
+++ b/src/snapshots.txt
@@ -1,3 +1,11 @@
+S 2014-06-21 db9af1d
+  freebsd-x86_64 ef2bd0fc0b0efa2bd6f5c1eaa60a2ec8df533254
+  linux-i386 84339ea0f796ae468ef86797ef4587274bec19ea
+  linux-x86_64 bd8a6bc1f28845b7f4b768f6bfa06e7fbdcfcaae
+  macos-i386 3f25b2680efbab16ad074477a19d49dcce475977
+  macos-x86_64 4a8c2e1b7634d73406bac32a1a97893ec3ed818d
+  winnt-i386 0bf4e101d979ce116977d660ef149d03fbc90b99
+
 S 2014-06-18 d6736a1
   freebsd-x86_64 c1479bb3dc0ae3d8ba9193ff2caf92c805a95c51
   linux-i386 bb1543b21235a51e81460b9419e112396ccf1d20