diff --git a/mkmain.rs b/mkmain.rs
index 262ca42ac..9203f4950 100644
--- a/mkmain.rs
+++ b/mkmain.rs
@@ -1,11 +1,10 @@
-#![allow(unstable)]
-
+#![feature(core, io, os, path)]
 use std::old_io::{File, Truncate, ReadWrite};
 use std::os;
 use std::path::Path;
 
 static TEMPLATE: &'static str = "\
-#![allow(unstable)]
+#![feature(os)]
 extern crate \"@UTIL_CRATE@\" as uu@UTIL_CRATE@;
 
 use std::os;
diff --git a/mkuutils.rs b/mkuutils.rs
index 56869bb89..abeb53f60 100644
--- a/mkuutils.rs
+++ b/mkuutils.rs
@@ -1,4 +1,4 @@
-#![allow(unstable)]
+#![feature(core, io, os, path)]
 
 use std::old_io::{File, Truncate, Write};
 use std::os;
diff --git a/src/base64/base64.rs b/src/base64/base64.rs
index fbefc79fe..3af288b10 100644
--- a/src/base64/base64.rs
+++ b/src/base64/base64.rs
@@ -1,5 +1,5 @@
 #![crate_name = "base64"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/basename/basename.rs b/src/basename/basename.rs
index 21b37ea5b..e2d77c955 100644
--- a/src/basename/basename.rs
+++ b/src/basename/basename.rs
@@ -1,5 +1,5 @@
 #![crate_name = "basename"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/cat/cat.rs b/src/cat/cat.rs
index 999c19092..0f24ef944 100644
--- a/src/cat/cat.rs
+++ b/src/cat/cat.rs
@@ -1,5 +1,5 @@
 #![crate_name = "cat"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 #![feature(box_syntax, unsafe_destructor)]
 
diff --git a/src/chmod/chmod.rs b/src/chmod/chmod.rs
index 735f4e77d..d8cf2734c 100644
--- a/src/chmod/chmod.rs
+++ b/src/chmod/chmod.rs
@@ -1,5 +1,5 @@
 #![crate_name = "chmod"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/chroot/chroot.rs b/src/chroot/chroot.rs
index 5f5cb88d9..346f82153 100644
--- a/src/chroot/chroot.rs
+++ b/src/chroot/chroot.rs
@@ -1,5 +1,5 @@
 #![crate_name = "chroot"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, os, path, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/cksum/cksum.rs b/src/cksum/cksum.rs
index 7d9a7a875..bfb1c56d1 100644
--- a/src/cksum/cksum.rs
+++ b/src/cksum/cksum.rs
@@ -1,5 +1,5 @@
 #![crate_name = "cksum"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/comm/comm.rs b/src/comm/comm.rs
index 154548333..33d4e9269 100644
--- a/src/comm/comm.rs
+++ b/src/comm/comm.rs
@@ -1,5 +1,5 @@
 #![crate_name = "comm"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/cp/cp.rs b/src/cp/cp.rs
index 7c9188158..680d7c488 100644
--- a/src/cp/cp.rs
+++ b/src/cp/cp.rs
@@ -1,5 +1,5 @@
 #![crate_name = "cp"]
-#![allow(unstable)]
+#![feature(collections, core, io, os, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/cut/cut.rs b/src/cut/cut.rs
index aabf2acdc..0921ed95b 100644
--- a/src/cut/cut.rs
+++ b/src/cut/cut.rs
@@ -1,5 +1,5 @@
 #![crate_name = "cut"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/dirname/dirname.rs b/src/dirname/dirname.rs
index 26f898a2e..a08adc523 100644
--- a/src/dirname/dirname.rs
+++ b/src/dirname/dirname.rs
@@ -1,5 +1,5 @@
 #![crate_name = "dirname"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/du/du.rs b/src/du/du.rs
index 76f549123..343cb6580 100644
--- a/src/du/du.rs
+++ b/src/du/du.rs
@@ -1,5 +1,5 @@
 #![crate_name = "du"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private, std_misc, unicode)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/echo/echo.rs b/src/echo/echo.rs
index 25975f828..a53c984e7 100644
--- a/src/echo/echo.rs
+++ b/src/echo/echo.rs
@@ -1,5 +1,5 @@
 #![crate_name = "echo"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/env/env.rs b/src/env/env.rs
index cb9559a50..845f740d3 100644
--- a/src/env/env.rs
+++ b/src/env/env.rs
@@ -1,5 +1,5 @@
 #![crate_name = "env"]
-#![allow(unstable)]
+#![feature(core, io, os)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/expand/expand.rs b/src/expand/expand.rs
index e89b62b98..056991a8f 100644
--- a/src/expand/expand.rs
+++ b/src/expand/expand.rs
@@ -1,5 +1,5 @@
 #![crate_name = "expand"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/factor/factor.rs b/src/factor/factor.rs
index 112cd99f0..846c73290 100644
--- a/src/factor/factor.rs
+++ b/src/factor/factor.rs
@@ -1,5 +1,5 @@
 #![crate_name = "factor"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private)]
 
 /*
 * This file is part of the uutils coreutils package.
diff --git a/src/false/false.rs b/src/false/false.rs
index 48f937079..471c523a7 100644
--- a/src/false/false.rs
+++ b/src/false/false.rs
@@ -1,5 +1,4 @@
 #![crate_name = "false"]
-#![allow(unstable)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/fold/fold.rs b/src/fold/fold.rs
index 8ccd0b13c..7a91be41d 100644
--- a/src/fold/fold.rs
+++ b/src/fold/fold.rs
@@ -1,5 +1,5 @@
 #![crate_name = "fold"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private, unicode)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/groups/groups.rs b/src/groups/groups.rs
index f22773f60..3526b1e69 100644
--- a/src/groups/groups.rs
+++ b/src/groups/groups.rs
@@ -1,5 +1,5 @@
 #![crate_name = "groups"]
-#![allow(unstable)]
+#![feature(collections, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/hashsum/hashsum.rs b/src/hashsum/hashsum.rs
index 83e847e5b..ee3c4923f 100644
--- a/src/hashsum/hashsum.rs
+++ b/src/hashsum/hashsum.rs
@@ -1,5 +1,5 @@
 #![crate_name = "hashsum"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/head/head.rs b/src/head/head.rs
index b7611130a..789bd760a 100644
--- a/src/head/head.rs
+++ b/src/head/head.rs
@@ -1,5 +1,5 @@
 #![crate_name = "head"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/hostid/hostid.rs b/src/hostid/hostid.rs
index 7fc737330..5800b6823 100644
--- a/src/hostid/hostid.rs
+++ b/src/hostid/hostid.rs
@@ -1,5 +1,5 @@
 #![crate_name = "hostid"]
-#![allow(unstable)]
+#![feature(collections, core, libc, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/hostname/hostname.rs b/src/hostname/hostname.rs
index e7a2bbf3d..ed216b2a3 100644
--- a/src/hostname/hostname.rs
+++ b/src/hostname/hostname.rs
@@ -1,5 +1,5 @@
 #![crate_name = "hostname"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/id/id.rs b/src/id/id.rs
index 1de0a46c0..f9cc8eafb 100644
--- a/src/id/id.rs
+++ b/src/id/id.rs
@@ -1,5 +1,5 @@
 #![crate_name = "id"]
-#![allow(unstable)]
+#![feature(collections, core, libc, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/kill/kill.rs b/src/kill/kill.rs
index 83f0afea4..febce87a6 100644
--- a/src/kill/kill.rs
+++ b/src/kill/kill.rs
@@ -1,5 +1,5 @@
 #![crate_name = "kill"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private, unicode)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/link/link.rs b/src/link/link.rs
index a58e47921..5bc2bb103 100644
--- a/src/link/link.rs
+++ b/src/link/link.rs
@@ -1,5 +1,5 @@
 #![crate_name = "link"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/logname/logname.rs b/src/logname/logname.rs
index b09859334..e10647c26 100644
--- a/src/logname/logname.rs
+++ b/src/logname/logname.rs
@@ -1,5 +1,5 @@
 #![crate_name = "logname"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/mkdir/mkdir.rs b/src/mkdir/mkdir.rs
index c0f16e79a..7e5c69391 100644
--- a/src/mkdir/mkdir.rs
+++ b/src/mkdir/mkdir.rs
@@ -1,5 +1,5 @@
 #![crate_name = "mkdir"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/mkfifo/mkfifo.rs b/src/mkfifo/mkfifo.rs
index e76b44b15..79694f950 100644
--- a/src/mkfifo/mkfifo.rs
+++ b/src/mkfifo/mkfifo.rs
@@ -1,5 +1,5 @@
 #![crate_name = "mkfifo"]
-#![allow(unstable)]
+#![feature(collections, core, libc, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/mv/mv.rs b/src/mv/mv.rs
index 8fad6d672..7c8695f54 100644
--- a/src/mv/mv.rs
+++ b/src/mv/mv.rs
@@ -1,5 +1,5 @@
 #![crate_name = "mv"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/nice/nice.rs b/src/nice/nice.rs
index 8131454fa..b8f4c0931 100644
--- a/src/nice/nice.rs
+++ b/src/nice/nice.rs
@@ -1,5 +1,5 @@
 #![crate_name = "nice"]
-#![allow(unstable)]
+#![feature(collections, core, libc, os, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/nl/nl.rs b/src/nl/nl.rs
index 6fc6aea61..cd8407c5b 100644
--- a/src/nl/nl.rs
+++ b/src/nl/nl.rs
@@ -1,5 +1,5 @@
 #![crate_name = "nl"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/nohup/nohup.rs b/src/nohup/nohup.rs
index ceb5f1819..7a1d0ff73 100644
--- a/src/nohup/nohup.rs
+++ b/src/nohup/nohup.rs
@@ -1,5 +1,5 @@
 #![crate_name = "nohup"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, os, path, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/nproc/nproc.rs b/src/nproc/nproc.rs
index ac8cd3f11..aec64328d 100644
--- a/src/nproc/nproc.rs
+++ b/src/nproc/nproc.rs
@@ -1,5 +1,5 @@
 #![crate_name = "nproc"]
-#![allow(unstable)]
+#![feature(collections, os, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/od/od.rs b/src/od/od.rs
index 93f11dd56..0a841c181 100644
--- a/src/od/od.rs
+++ b/src/od/od.rs
@@ -1,5 +1,5 @@
 #![crate_name = "od"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/paste/paste.rs b/src/paste/paste.rs
index a28538e75..f075aad4d 100644
--- a/src/paste/paste.rs
+++ b/src/paste/paste.rs
@@ -1,5 +1,5 @@
 #![crate_name = "paste"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/printenv/printenv.rs b/src/printenv/printenv.rs
index 99a57fec8..03688ede7 100644
--- a/src/printenv/printenv.rs
+++ b/src/printenv/printenv.rs
@@ -1,5 +1,5 @@
 #![crate_name = "printenv"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, os, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/pwd/pwd.rs b/src/pwd/pwd.rs
index 0e2bffff3..bc40b6433 100644
--- a/src/pwd/pwd.rs
+++ b/src/pwd/pwd.rs
@@ -1,5 +1,5 @@
 #![crate_name = "pwd"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, os, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/readlink/readlink.rs b/src/readlink/readlink.rs
index 596c81930..9134bd648 100644
--- a/src/readlink/readlink.rs
+++ b/src/readlink/readlink.rs
@@ -1,5 +1,5 @@
 #![crate_name = "readlink"]
-#![allow(unstable)]
+#![feature(collections, core, io, os, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/realpath/realpath.rs b/src/realpath/realpath.rs
index 8715e132d..3bbef8e05 100644
--- a/src/realpath/realpath.rs
+++ b/src/realpath/realpath.rs
@@ -1,5 +1,5 @@
 #![crate_name= "realpath"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, os, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/relpath/relpath.rs b/src/relpath/relpath.rs
index f16b38c9f..2aa2251ca 100644
--- a/src/relpath/relpath.rs
+++ b/src/relpath/relpath.rs
@@ -1,5 +1,5 @@
 #![crate_name = "relpath"]
-#![allow(unstable)]
+#![feature(collections, core, libc, os, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/rm/rm.rs b/src/rm/rm.rs
index c5f7a86c2..29dacc081 100644
--- a/src/rm/rm.rs
+++ b/src/rm/rm.rs
@@ -1,5 +1,5 @@
 #![crate_name = "rm"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/rmdir/rmdir.rs b/src/rmdir/rmdir.rs
index 852e8be27..c2bcdc75a 100644
--- a/src/rmdir/rmdir.rs
+++ b/src/rmdir/rmdir.rs
@@ -1,5 +1,5 @@
 #![crate_name = "rmdir"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/seq/seq.rs b/src/seq/seq.rs
index 2a651199b..7db5ec766 100644
--- a/src/seq/seq.rs
+++ b/src/seq/seq.rs
@@ -1,5 +1,5 @@
 #![crate_name = "seq"]
-#![allow(unstable)]
+#![feature(collections, core, libc, rustc_private)]
 
 // TODO: Make -w flag work with decimals
 // TODO: Support -f flag
diff --git a/src/shuf/shuf.rs b/src/shuf/shuf.rs
index 3e86fac30..1eb5c71a4 100644
--- a/src/shuf/shuf.rs
+++ b/src/shuf/shuf.rs
@@ -1,5 +1,5 @@
 #![crate_name = "shuf"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rand, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/sleep/sleep.rs b/src/sleep/sleep.rs
index 51964a6a1..e0622068c 100644
--- a/src/sleep/sleep.rs
+++ b/src/sleep/sleep.rs
@@ -1,5 +1,5 @@
 #![crate_name = "sleep"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/sort/sort.rs b/src/sort/sort.rs
index 46f495eb3..14091e9b9 100644
--- a/src/sort/sort.rs
+++ b/src/sort/sort.rs
@@ -1,5 +1,5 @@
 #![crate_name = "sort"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private, unicode)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/split/split.rs b/src/split/split.rs
index 443310921..a4f0f9403 100644
--- a/src/split/split.rs
+++ b/src/split/split.rs
@@ -1,5 +1,5 @@
 #![crate_name = "split"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/stdbuf/libstdbuf.rs b/src/stdbuf/libstdbuf.rs
index 755f6fbe9..d530b09ce 100644
--- a/src/stdbuf/libstdbuf.rs
+++ b/src/stdbuf/libstdbuf.rs
@@ -1,6 +1,6 @@
 #![crate_name = "libstdbuf"]
 #![crate_type = "staticlib"]
-#![allow(unstable)]
+#![feature(core, libc, os)]
 
 extern crate libc;
 use libc::{c_int, size_t, c_char, FILE, _IOFBF, _IONBF, _IOLBF, setvbuf};
diff --git a/src/stdbuf/stdbuf.rs b/src/stdbuf/stdbuf.rs
index 5ffc703bb..08262ce2e 100644
--- a/src/stdbuf/stdbuf.rs
+++ b/src/stdbuf/stdbuf.rs
@@ -1,5 +1,5 @@
 #![crate_name = "stdbuf"]
-#![allow(unstable)]
+#![feature(core, io, libc, os, path, rustc_private, unicode)]
 
 /*
 * This file is part of the uutils coreutils package.
diff --git a/src/sum/sum.rs b/src/sum/sum.rs
index 0c4539927..263fe216f 100644
--- a/src/sum/sum.rs
+++ b/src/sum/sum.rs
@@ -1,5 +1,5 @@
 #![crate_name = "sum"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
 * This file is part of the uutils coreutils package.
diff --git a/src/sync/sync.rs b/src/sync/sync.rs
index 21efeb3ba..e4c3b08ca 100644
--- a/src/sync/sync.rs
+++ b/src/sync/sync.rs
@@ -1,5 +1,5 @@
 #![crate_name = "sync"]
-#![allow(unstable)]
+#![feature(collections, libc, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/tac/tac.rs b/src/tac/tac.rs
index 61d58b352..9d10f6ce0 100644
--- a/src/tac/tac.rs
+++ b/src/tac/tac.rs
@@ -1,5 +1,5 @@
 #![crate_name = "tac"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/tail/tail.rs b/src/tail/tail.rs
index 350f6567f..8a2682c24 100644
--- a/src/tail/tail.rs
+++ b/src/tail/tail.rs
@@ -1,5 +1,5 @@
 #![crate_name = "tail"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/tee/tee.rs b/src/tee/tee.rs
index 28cb1a8cc..204f27536 100644
--- a/src/tee/tee.rs
+++ b/src/tee/tee.rs
@@ -1,5 +1,5 @@
 #![crate_name = "tee"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/test/test.rs b/src/test/test.rs
index a3434e77a..57b33dd23 100644
--- a/src/test/test.rs
+++ b/src/test/test.rs
@@ -1,5 +1,5 @@
 #![crate_name = "test"]
-#![allow(unstable)]
+#![feature(core, libc, os, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/timeout/timeout.rs b/src/timeout/timeout.rs
index a2314cc2c..c96b4d44a 100644
--- a/src/timeout/timeout.rs
+++ b/src/timeout/timeout.rs
@@ -1,5 +1,5 @@
 #![crate_name = "timeout"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/touch/touch.rs b/src/touch/touch.rs
index d99faee7b..ea2aa8cfa 100644
--- a/src/touch/touch.rs
+++ b/src/touch/touch.rs
@@ -1,5 +1,5 @@
 #![crate_name = "touch"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/tr/tr.rs b/src/tr/tr.rs
index bd538690c..bf3b2ff92 100644
--- a/src/tr/tr.rs
+++ b/src/tr/tr.rs
@@ -1,5 +1,5 @@
 #![crate_name = "tr"]
-#![allow(unstable)]
+#![feature(collections, core, io, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/true/true.rs b/src/true/true.rs
index 7818801fc..9909466d6 100644
--- a/src/true/true.rs
+++ b/src/true/true.rs
@@ -1,5 +1,4 @@
 #![crate_name= "true"]
-#![allow(unstable)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/truncate/truncate.rs b/src/truncate/truncate.rs
index 85f35e69c..9cfff2461 100644
--- a/src/truncate/truncate.rs
+++ b/src/truncate/truncate.rs
@@ -1,5 +1,5 @@
 #![crate_name = "truncate"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/tsort/tsort.rs b/src/tsort/tsort.rs
index 1f5a54009..90753896b 100644
--- a/src/tsort/tsort.rs
+++ b/src/tsort/tsort.rs
@@ -1,5 +1,5 @@
 #![crate_name = "tsort"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/tty/tty.rs b/src/tty/tty.rs
index 6bee5b45c..861e99baf 100644
--- a/src/tty/tty.rs
+++ b/src/tty/tty.rs
@@ -1,5 +1,5 @@
 #![crate_name = "tty"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/uname/uname.rs b/src/uname/uname.rs
index 0c5b97a9d..1e755ac3e 100644
--- a/src/uname/uname.rs
+++ b/src/uname/uname.rs
@@ -1,5 +1,5 @@
 #![crate_name = "uname"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/unexpand/unexpand.rs b/src/unexpand/unexpand.rs
index 40e4ffdd4..90512f1fc 100644
--- a/src/unexpand/unexpand.rs
+++ b/src/unexpand/unexpand.rs
@@ -1,5 +1,5 @@
 #![crate_name = "unexpand"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/uniq/uniq.rs b/src/uniq/uniq.rs
index d1fd13484..1125943d2 100644
--- a/src/uniq/uniq.rs
+++ b/src/uniq/uniq.rs
@@ -1,5 +1,5 @@
 #![crate_name = "uniq"]
-#![allow(unstable)]
+#![feature(collections, core, io, path, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/unlink/unlink.rs b/src/unlink/unlink.rs
index e01dc08c2..5be5c2810 100644
--- a/src/unlink/unlink.rs
+++ b/src/unlink/unlink.rs
@@ -1,5 +1,5 @@
 #![crate_name = "unlink"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/uptime/uptime.rs b/src/uptime/uptime.rs
index d872292fe..0bb9ee247 100644
--- a/src/uptime/uptime.rs
+++ b/src/uptime/uptime.rs
@@ -1,5 +1,5 @@
 #![crate_name = "uptime"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/users/users.rs b/src/users/users.rs
index 3287a6877..5a6989116 100644
--- a/src/users/users.rs
+++ b/src/users/users.rs
@@ -1,5 +1,5 @@
 #![crate_name = "users"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/uutils/uutils.rs b/src/uutils/uutils.rs
index 4b9e5a470..0e2dd4560 100644
--- a/src/uutils/uutils.rs
+++ b/src/uutils/uutils.rs
@@ -1,5 +1,5 @@
 #![crate_name = "uutils"]
-#![allow(unstable)]
+#![feature(core, os, path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/wc/wc.rs b/src/wc/wc.rs
index a88fcc52a..55c53f7ce 100644
--- a/src/wc/wc.rs
+++ b/src/wc/wc.rs
@@ -1,5 +1,5 @@
 #![crate_name = "wc"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, path, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/whoami/whoami.rs b/src/whoami/whoami.rs
index 927547697..eef3f5394 100644
--- a/src/whoami/whoami.rs
+++ b/src/whoami/whoami.rs
@@ -1,5 +1,5 @@
 #![crate_name = "whoami"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private, std_misc)]
 
 /*
  * This file is part of the uutils coreutils package.
diff --git a/src/yes/yes.rs b/src/yes/yes.rs
index ae41cdc7d..44d9606c6 100644
--- a/src/yes/yes.rs
+++ b/src/yes/yes.rs
@@ -1,5 +1,5 @@
 #![crate_name = "yes"]
-#![allow(unstable)]
+#![feature(collections, core, io, libc, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.