diff --git a/src/bin/coreutils.rs b/src/bin/coreutils.rs
index f813f2ae5..b172edbd3 100644
--- a/src/bin/coreutils.rs
+++ b/src/bin/coreutils.rs
@@ -5,9 +5,6 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
-extern crate textwrap;
-extern crate uucore;
-
 use std::cmp;
 use std::collections::hash_map::HashMap;
 use std::ffi::OsString;
diff --git a/src/uu/arch/src/arch.rs b/src/uu/arch/src/arch.rs
index 20c278942..20392b11f 100644
--- a/src/uu/arch/src/arch.rs
+++ b/src/uu/arch/src/arch.rs
@@ -6,7 +6,6 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
-extern crate platform_info;
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/chmod/src/chmod.rs b/src/uu/chmod/src/chmod.rs
index bcba604e9..eee750f90 100644
--- a/src/uu/chmod/src/chmod.rs
+++ b/src/uu/chmod/src/chmod.rs
@@ -7,10 +7,6 @@
 
 // spell-checker:ignore (ToDO) Chmoder cmode fmode fperm fref ugoa RFILE RFILE's
 
-#[cfg(unix)]
-extern crate libc;
-extern crate walkdir;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/chown/src/chown.rs b/src/uu/chown/src/chown.rs
index 460f1da86..5ad82872b 100644
--- a/src/uu/chown/src/chown.rs
+++ b/src/uu/chown/src/chown.rs
@@ -14,10 +14,8 @@ use uucore::fs::resolve_relative_path;
 use uucore::libc::{gid_t, uid_t};
 use uucore::perms::{wrap_chown, Verbosity};
 
-extern crate clap;
 use clap::{App, Arg};
 
-extern crate walkdir;
 use walkdir::WalkDir;
 
 use std::fs::{self, Metadata};
diff --git a/src/uu/chroot/src/chroot.rs b/src/uu/chroot/src/chroot.rs
index c0205406a..773207363 100644
--- a/src/uu/chroot/src/chroot.rs
+++ b/src/uu/chroot/src/chroot.rs
@@ -8,8 +8,6 @@
 
 // spell-checker:ignore (ToDO) NEWROOT Userspec pstatus
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 use uucore::entries;
diff --git a/src/uu/comm/src/comm.rs b/src/uu/comm/src/comm.rs
index 4e15ce9c9..3fb1ef395 100644
--- a/src/uu/comm/src/comm.rs
+++ b/src/uu/comm/src/comm.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) delim mkdelim
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/cp/src/cp.rs b/src/uu/cp/src/cp.rs
index e933ce338..868c35f2d 100644
--- a/src/uu/cp/src/cp.rs
+++ b/src/uu/cp/src/cp.rs
@@ -10,22 +10,14 @@
 
 // spell-checker:ignore (ToDO) ficlone linkgs lstat nlink nlinks pathbuf reflink strs xattrs
 
-extern crate clap;
-extern crate filetime;
 #[cfg(target_os = "linux")]
 #[macro_use]
 extern crate ioctl_sys;
-extern crate libc;
 #[macro_use]
 extern crate quick_error;
 #[macro_use]
 extern crate uucore;
-extern crate walkdir;
-#[cfg(unix)]
-extern crate xattr;
 
-#[cfg(windows)]
-extern crate winapi;
 #[cfg(windows)]
 use winapi::um::fileapi::CreateFileW;
 #[cfg(windows)]
diff --git a/src/uu/csplit/src/csplit.rs b/src/uu/csplit/src/csplit.rs
index b0e341a58..40a1a402c 100644
--- a/src/uu/csplit/src/csplit.rs
+++ b/src/uu/csplit/src/csplit.rs
@@ -4,8 +4,6 @@
 extern crate failure;
 #[macro_use]
 extern crate uucore;
-extern crate getopts;
-extern crate regex;
 use getopts::Matches;
 use regex::Regex;
 use std::cmp::Ordering;
diff --git a/src/uu/date/src/date.rs b/src/uu/date/src/date.rs
index 895c68b8c..5ee4b1610 100644
--- a/src/uu/date/src/date.rs
+++ b/src/uu/date/src/date.rs
@@ -9,9 +9,6 @@
 // spell-checker:ignore (format) MMDDhhmm
 // spell-checker:ignore (ToDO) DATEFILE
 
-extern crate chrono;
-
-extern crate clap;
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/df/src/df.rs b/src/uu/df/src/df.rs
index 58b0be4ed..e8bb641ec 100644
--- a/src/uu/df/src/df.rs
+++ b/src/uu/df/src/df.rs
@@ -9,17 +9,11 @@
 // spell-checker:ignore (ToDO) mountinfo mtab BLOCKSIZE getmntinfo fobj mptr noatime Iused overmounted
 // spell-checker:ignore (libc/fs) asyncreads asyncwrites autofs bavail bfree bsize charspare cifs debugfs devfs devpts ffree frsize fsid fstypename fusectl inode inodes iosize kernfs mntbufp mntfromname mntonname mqueue namemax pipefs smbfs statfs statvfs subfs syncreads syncwrites sysfs wcslen
 
-extern crate clap;
-extern crate libc;
-extern crate number_prefix;
-
 #[macro_use]
 extern crate uucore;
 
 use clap::{App, Arg};
 
-#[cfg(windows)]
-extern crate winapi;
 #[cfg(windows)]
 use winapi::um::errhandlingapi::GetLastError;
 #[cfg(windows)]
diff --git a/src/uu/dircolors/src/dircolors.rs b/src/uu/dircolors/src/dircolors.rs
index 0b6072999..6cb5f9e1b 100644
--- a/src/uu/dircolors/src/dircolors.rs
+++ b/src/uu/dircolors/src/dircolors.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) clrtoeol dircolors eightbit endcode fnmatch leftcode multihardlink rightcode setenv sgid suid
 
-extern crate glob;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/du/src/du.rs b/src/uu/du/src/du.rs
index f5071e749..4ed80f18b 100644
--- a/src/uu/du/src/du.rs
+++ b/src/uu/du/src/du.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) BLOCKSIZE inode inodes ment strs
 
-extern crate time;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/expand/src/expand.rs b/src/uu/expand/src/expand.rs
index e44282974..353c3e6bc 100644
--- a/src/uu/expand/src/expand.rs
+++ b/src/uu/expand/src/expand.rs
@@ -9,9 +9,6 @@
 
 // spell-checker:ignore (ToDO) ctype cwidth iflag nbytes nspaces nums tspaces uflag
 
-extern crate getopts;
-extern crate unicode_width;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/expr/src/expr.rs b/src/uu/expr/src/expr.rs
index b63f8b6a8..fee85dfe1 100644
--- a/src/uu/expr/src/expr.rs
+++ b/src/uu/expr/src/expr.rs
@@ -5,7 +5,6 @@
 //* For the full copyright and license information, please view the LICENSE
 //* file that was distributed with this source code.
 
-extern crate onig;
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/factor/src/factor.rs b/src/uu/factor/src/factor.rs
index a7dc4fa2e..7beb6a043 100644
--- a/src/uu/factor/src/factor.rs
+++ b/src/uu/factor/src/factor.rs
@@ -5,8 +5,6 @@
 // * For the full copyright and license information, please view the LICENSE file
 // * that was distributed with this source code.
 
-extern crate rand;
-
 use smallvec::SmallVec;
 use std::cell::RefCell;
 use std::fmt;
diff --git a/src/uu/fmt/src/fmt.rs b/src/uu/fmt/src/fmt.rs
index a7a3103b4..960b20185 100644
--- a/src/uu/fmt/src/fmt.rs
+++ b/src/uu/fmt/src/fmt.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) PSKIP linebreak ostream parasplit tabwidth xanti xprefix
 
-extern crate unicode_width;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/groups/src/groups.rs b/src/uu/groups/src/groups.rs
index e2ae61a91..2ce5fe70e 100644
--- a/src/uu/groups/src/groups.rs
+++ b/src/uu/groups/src/groups.rs
@@ -12,7 +12,6 @@
 extern crate uucore;
 use uucore::entries::{get_groups, gid2grp, Locate, Passwd};
 
-extern crate clap;
 use clap::{App, Arg};
 
 static VERSION: &str = env!("CARGO_PKG_VERSION");
diff --git a/src/uu/hashsum/src/hashsum.rs b/src/uu/hashsum/src/hashsum.rs
index ca31514bc..ee7d2a0f7 100644
--- a/src/uu/hashsum/src/hashsum.rs
+++ b/src/uu/hashsum/src/hashsum.rs
@@ -11,14 +11,6 @@
 
 #[macro_use]
 extern crate clap;
-extern crate blake2_rfc;
-extern crate hex;
-extern crate md5;
-extern crate regex;
-extern crate regex_syntax;
-extern crate sha1;
-extern crate sha2;
-extern crate sha3;
 
 #[macro_use]
 extern crate uucore;
diff --git a/src/uu/hostid/src/hostid.rs b/src/uu/hostid/src/hostid.rs
index 162335b3a..5a4909c62 100644
--- a/src/uu/hostid/src/hostid.rs
+++ b/src/uu/hostid/src/hostid.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) gethostid
 
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/hostname/src/hostname.rs b/src/uu/hostname/src/hostname.rs
index b574cf1d5..f37b6a74d 100644
--- a/src/uu/hostname/src/hostname.rs
+++ b/src/uu/hostname/src/hostname.rs
@@ -7,12 +7,6 @@
 
 // spell-checker:ignore (ToDO) MAKEWORD addrs hashset
 
-extern crate clap;
-extern crate hostname;
-extern crate libc;
-#[cfg(windows)]
-extern crate winapi;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/id/src/id.rs b/src/uu/id/src/id.rs
index c374de050..f07a850fa 100644
--- a/src/uu/id/src/id.rs
+++ b/src/uu/id/src/id.rs
@@ -15,8 +15,6 @@
 #![allow(non_camel_case_types)]
 #![allow(dead_code)]
 
-extern crate clap;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/install/src/install.rs b/src/uu/install/src/install.rs
index cf500c9de..b0c6f1930 100644
--- a/src/uu/install/src/install.rs
+++ b/src/uu/install/src/install.rs
@@ -7,9 +7,6 @@
 
 // spell-checker:ignore (ToDO) rwxr sourcepath targetpath
 
-extern crate clap;
-extern crate libc;
-
 mod mode;
 
 #[macro_use]
diff --git a/src/uu/install/src/mode.rs b/src/uu/install/src/mode.rs
index 9c8eb2de0..a3de40c68 100644
--- a/src/uu/install/src/mode.rs
+++ b/src/uu/install/src/mode.rs
@@ -1,5 +1,3 @@
-extern crate libc;
-
 use std::fs;
 use std::path::Path;
 #[cfg(not(windows))]
diff --git a/src/uu/join/src/join.rs b/src/uu/join/src/join.rs
index cbce1be84..d02a54eb3 100644
--- a/src/uu/join/src/join.rs
+++ b/src/uu/join/src/join.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) autoformat FILENUM whitespaces pairable unpairable nocheck
 
-extern crate clap;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/kill/src/kill.rs b/src/uu/kill/src/kill.rs
index d0df6fa3c..9af9c74f7 100644
--- a/src/uu/kill/src/kill.rs
+++ b/src/uu/kill/src/kill.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) signalname pids
 
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/logname/src/logname.rs b/src/uu/logname/src/logname.rs
index 4537bb9cd..c1f0c31aa 100644
--- a/src/uu/logname/src/logname.rs
+++ b/src/uu/logname/src/logname.rs
@@ -9,8 +9,6 @@
 
 // spell-checker:ignore (ToDO) getlogin userlogin
 
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/ls/src/ls.rs b/src/uu/ls/src/ls.rs
index 5a20478bc..389ce48f0 100644
--- a/src/uu/ls/src/ls.rs
+++ b/src/uu/ls/src/ls.rs
@@ -7,15 +7,6 @@
 
 // spell-checker:ignore (ToDO) cpio svgz webm somegroup nlink rmvb xspf
 
-extern crate getopts;
-#[cfg(unix)]
-extern crate isatty;
-extern crate number_prefix;
-extern crate term_grid;
-extern crate termsize;
-extern crate time;
-extern crate unicode_width;
-
 #[cfg(unix)]
 #[macro_use]
 extern crate lazy_static;
diff --git a/src/uu/mkdir/src/mkdir.rs b/src/uu/mkdir/src/mkdir.rs
index 88580a96e..6b9fd68ea 100644
--- a/src/uu/mkdir/src/mkdir.rs
+++ b/src/uu/mkdir/src/mkdir.rs
@@ -5,8 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-extern crate clap;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/mkfifo/src/mkfifo.rs b/src/uu/mkfifo/src/mkfifo.rs
index 1906e604a..41582b14a 100644
--- a/src/uu/mkfifo/src/mkfifo.rs
+++ b/src/uu/mkfifo/src/mkfifo.rs
@@ -5,9 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-extern crate getopts;
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/mknod/src/mknod.rs b/src/uu/mknod/src/mknod.rs
index 59d6b129f..1343501bb 100644
--- a/src/uu/mknod/src/mknod.rs
+++ b/src/uu/mknod/src/mknod.rs
@@ -7,9 +7,6 @@
 
 // spell-checker:ignore (ToDO) parsemode makedev sysmacros makenod newmode perror IFBLK IFCHR IFIFO
 
-extern crate getopts;
-extern crate libc;
-
 mod parsemode;
 
 #[macro_use]
diff --git a/src/uu/mknod/src/parsemode.rs b/src/uu/mknod/src/parsemode.rs
index b180bb8e5..8f8f9af61 100644
--- a/src/uu/mknod/src/parsemode.rs
+++ b/src/uu/mknod/src/parsemode.rs
@@ -1,6 +1,5 @@
 // spell-checker:ignore (ToDO) fperm
 
-extern crate libc;
 use libc::{mode_t, S_IRGRP, S_IROTH, S_IRUSR, S_IWGRP, S_IWOTH, S_IWUSR};
 
 use uucore::mode;
diff --git a/src/uu/mktemp/src/mktemp.rs b/src/uu/mktemp/src/mktemp.rs
index 508f21d2f..06645a7d7 100644
--- a/src/uu/mktemp/src/mktemp.rs
+++ b/src/uu/mktemp/src/mktemp.rs
@@ -8,10 +8,6 @@
 
 // spell-checker:ignore (ToDO) tempfile tempdir SUFF TMPDIR tmpname
 
-extern crate getopts;
-extern crate rand;
-extern crate tempfile;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/mktemp/src/tempdir.rs b/src/uu/mktemp/src/tempdir.rs
index 10c0bb62a..1b6c9d7b3 100644
--- a/src/uu/mktemp/src/tempdir.rs
+++ b/src/uu/mktemp/src/tempdir.rs
@@ -2,7 +2,6 @@
 
 // Mainly taken from crate `tempdir`
 
-extern crate rand;
 use rand::distributions::Alphanumeric;
 use rand::{thread_rng, Rng};
 
diff --git a/src/uu/more/src/more.rs b/src/uu/more/src/more.rs
index 5e0646b78..de4e10187 100644
--- a/src/uu/more/src/more.rs
+++ b/src/uu/more/src/more.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) lflag ICANON tcgetattr tcsetattr TCSADRAIN
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/mv/src/mv.rs b/src/uu/mv/src/mv.rs
index 3f8fddb02..6575ad37a 100644
--- a/src/uu/mv/src/mv.rs
+++ b/src/uu/mv/src/mv.rs
@@ -8,9 +8,6 @@
 
 // spell-checker:ignore (ToDO) sourcepath targetpath
 
-extern crate clap;
-extern crate fs_extra;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/nice/src/nice.rs b/src/uu/nice/src/nice.rs
index 52fb287b1..1f79ea09b 100644
--- a/src/uu/nice/src/nice.rs
+++ b/src/uu/nice/src/nice.rs
@@ -7,9 +7,6 @@
 
 // spell-checker:ignore (ToDO) getpriority execvp setpriority nstr PRIO cstrs ENOENT
 
-extern crate getopts;
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/nl/src/helper.rs b/src/uu/nl/src/helper.rs
index d3b78ea04..e34cfd2ae 100644
--- a/src/uu/nl/src/helper.rs
+++ b/src/uu/nl/src/helper.rs
@@ -1,8 +1,5 @@
 // spell-checker:ignore (ToDO) conv
 
-extern crate getopts;
-extern crate regex;
-
 // parse_style parses a style string into a NumberingStyle.
 fn parse_style(chars: &[char]) -> Result<crate::NumberingStyle, String> {
     if chars.len() == 1 && chars[0] == 'a' {
diff --git a/src/uu/nl/src/nl.rs b/src/uu/nl/src/nl.rs
index bc8c62016..105bb196b 100644
--- a/src/uu/nl/src/nl.rs
+++ b/src/uu/nl/src/nl.rs
@@ -8,12 +8,6 @@
 
 // spell-checker:ignore (ToDO) corasick memchr
 
-extern crate aho_corasick;
-extern crate getopts;
-extern crate memchr;
-extern crate regex;
-extern crate regex_syntax;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/nohup/src/nohup.rs b/src/uu/nohup/src/nohup.rs
index 76919cd7e..67e281e38 100644
--- a/src/uu/nohup/src/nohup.rs
+++ b/src/uu/nohup/src/nohup.rs
@@ -7,9 +7,6 @@
 
 // spell-checker:ignore (ToDO) execvp SIGHUP cproc vprocmgr cstrs homeout
 
-extern crate getopts;
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/nproc/src/nproc.rs b/src/uu/nproc/src/nproc.rs
index d1dec9005..4eb538618 100644
--- a/src/uu/nproc/src/nproc.rs
+++ b/src/uu/nproc/src/nproc.rs
@@ -7,12 +7,6 @@
 
 // spell-checker:ignore (ToDO) NPROCESSORS nprocs numstr threadstr sysconf
 
-extern crate clap;
-extern crate num_cpus;
-
-#[cfg(unix)]
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/numfmt/src/numfmt.rs b/src/uu/numfmt/src/numfmt.rs
index bf7c51c9e..2099391b0 100644
--- a/src/uu/numfmt/src/numfmt.rs
+++ b/src/uu/numfmt/src/numfmt.rs
@@ -5,8 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-extern crate getopts;
-
 use getopts::{Matches, Options};
 use std::fmt;
 use std::io::BufRead;
diff --git a/src/uu/od/src/od.rs b/src/uu/od/src/od.rs
index 64371bbe1..dbf784b76 100644
--- a/src/uu/od/src/od.rs
+++ b/src/uu/od/src/od.rs
@@ -7,10 +7,6 @@
 
 // spell-checker:ignore (ToDO) formatteriteminfo inputdecoder inputoffset mockstream nrofbytes partialreader odfunc multifile exitcode
 
-extern crate byteorder;
-extern crate getopts;
-extern crate half;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/paste/src/paste.rs b/src/uu/paste/src/paste.rs
index 345e3722a..cff96d18e 100644
--- a/src/uu/paste/src/paste.rs
+++ b/src/uu/paste/src/paste.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) delim
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/pathchk/src/pathchk.rs b/src/uu/pathchk/src/pathchk.rs
index 972cd4873..745d0d36c 100644
--- a/src/uu/pathchk/src/pathchk.rs
+++ b/src/uu/pathchk/src/pathchk.rs
@@ -9,9 +9,6 @@
 
 // spell-checker:ignore (ToDO) lstat
 
-extern crate getopts;
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/printenv/src/printenv.rs b/src/uu/printenv/src/printenv.rs
index 78f90382a..34571ddad 100644
--- a/src/uu/printenv/src/printenv.rs
+++ b/src/uu/printenv/src/printenv.rs
@@ -7,8 +7,6 @@
 
 /* last synced with: printenv (GNU coreutils) 8.13 */
 
-extern crate clap;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/printf/src/printf.rs b/src/uu/printf/src/printf.rs
index e7ce41d2a..c2952e5a9 100644
--- a/src/uu/printf/src/printf.rs
+++ b/src/uu/printf/src/printf.rs
@@ -3,9 +3,6 @@
 // spell-checker:ignore (change!) each's
 // spell-checker:ignore (ToDO) LONGHELP FORMATSTRING templating parameterizing formatstr
 
-extern crate itertools;
-extern crate uucore;
-
 mod cli;
 mod memo;
 mod tokenize;
diff --git a/src/uu/ptx/src/ptx.rs b/src/uu/ptx/src/ptx.rs
index 3621e1bdf..8421e52bc 100644
--- a/src/uu/ptx/src/ptx.rs
+++ b/src/uu/ptx/src/ptx.rs
@@ -7,12 +7,6 @@
 
 // spell-checker:ignore (ToDOs) corasick memchr Roff trunc oset iset
 
-extern crate aho_corasick;
-extern crate getopts;
-extern crate memchr;
-extern crate regex;
-extern crate regex_syntax;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/pwd/src/pwd.rs b/src/uu/pwd/src/pwd.rs
index 9196328ec..1786d33ee 100644
--- a/src/uu/pwd/src/pwd.rs
+++ b/src/uu/pwd/src/pwd.rs
@@ -5,8 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-extern crate clap;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/readlink/src/readlink.rs b/src/uu/readlink/src/readlink.rs
index ce8a65622..8bc9a2aeb 100644
--- a/src/uu/readlink/src/readlink.rs
+++ b/src/uu/readlink/src/readlink.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) errno
 
-extern crate clap;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/realpath/src/realpath.rs b/src/uu/realpath/src/realpath.rs
index db7ce846b..20aaa2fcb 100644
--- a/src/uu/realpath/src/realpath.rs
+++ b/src/uu/realpath/src/realpath.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) retcode
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/relpath/src/relpath.rs b/src/uu/relpath/src/relpath.rs
index e48d43b44..4e165df1f 100644
--- a/src/uu/relpath/src/relpath.rs
+++ b/src/uu/relpath/src/relpath.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) subpath absto absfrom absbase
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/rm/src/rm.rs b/src/uu/rm/src/rm.rs
index 28f854319..4c81c97cc 100644
--- a/src/uu/rm/src/rm.rs
+++ b/src/uu/rm/src/rm.rs
@@ -7,10 +7,6 @@
 
 // spell-checker:ignore (ToDO) bitor ulong
 
-extern crate clap;
-extern crate remove_dir_all;
-extern crate walkdir;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/rmdir/src/rmdir.rs b/src/uu/rmdir/src/rmdir.rs
index b551060bd..7a7e8fc9b 100644
--- a/src/uu/rmdir/src/rmdir.rs
+++ b/src/uu/rmdir/src/rmdir.rs
@@ -5,8 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-extern crate clap;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/seq/src/seq.rs b/src/uu/seq/src/seq.rs
index d7fb2de48..6a8a57a01 100644
--- a/src/uu/seq/src/seq.rs
+++ b/src/uu/seq/src/seq.rs
@@ -3,8 +3,6 @@
 
 // spell-checker:ignore (ToDO) istr chiter argptr ilen
 
-extern crate clap;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/shred/src/shred.rs b/src/uu/shred/src/shred.rs
index 8b12f0195..9d945ea03 100644
--- a/src/uu/shred/src/shred.rs
+++ b/src/uu/shred/src/shred.rs
@@ -8,9 +8,6 @@
 
 // spell-checker:ignore (ToDO) NAMESET FILESIZE fstab coeff journaling writeback REiser journaled
 
-extern crate getopts;
-extern crate rand;
-
 use rand::{Rng, ThreadRng};
 use std::cell::{Cell, RefCell};
 use std::fs;
diff --git a/src/uu/shuf/src/shuf.rs b/src/uu/shuf/src/shuf.rs
index 6006b7875..9f4bb01c4 100644
--- a/src/uu/shuf/src/shuf.rs
+++ b/src/uu/shuf/src/shuf.rs
@@ -7,9 +7,6 @@
 
 // spell-checker:ignore (ToDO) cmdline evec seps rvec fdata
 
-extern crate getopts;
-extern crate rand;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/sleep/src/sleep.rs b/src/uu/sleep/src/sleep.rs
index 1097da886..f08a6d3a4 100644
--- a/src/uu/sleep/src/sleep.rs
+++ b/src/uu/sleep/src/sleep.rs
@@ -5,8 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/sort/src/sort.rs b/src/uu/sort/src/sort.rs
index 60e0b4127..8e79ff947 100644
--- a/src/uu/sort/src/sort.rs
+++ b/src/uu/sort/src/sort.rs
@@ -7,11 +7,6 @@
 #![allow(dead_code)]
 
 // spell-checker:ignore (ToDO) outfile nondictionary
-
-extern crate clap;
-extern crate semver;
-
-extern crate itertools;
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/split/src/split.rs b/src/uu/split/src/split.rs
index ee6b8e9fd..c2109a562 100644
--- a/src/uu/split/src/split.rs
+++ b/src/uu/split/src/split.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) PREFIXaa
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/stat/src/stat.rs b/src/uu/stat/src/stat.rs
index a9588dee0..322f224b3 100644
--- a/src/uu/stat/src/stat.rs
+++ b/src/uu/stat/src/stat.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) mtab fsext showfs otype fmtstr prec ftype blocksize nlink rdev fnodes fsid namelen blksize inodes fstype iosize statfs gnulib NBLOCKSIZE
 
-extern crate clap;
-
 #[macro_use]
 mod fsext;
 pub use crate::fsext::*;
diff --git a/src/uu/stdbuf/src/libstdbuf/build.rs b/src/uu/stdbuf/src/libstdbuf/build.rs
index 95f55ed94..fc8ddeac8 100644
--- a/src/uu/stdbuf/src/libstdbuf/build.rs
+++ b/src/uu/stdbuf/src/libstdbuf/build.rs
@@ -1,7 +1,5 @@
 // spell-checker:ignore (ToDO) libstdbuf
 
-extern crate cpp_build;
-
 use cpp_build::Config;
 
 fn main() {
diff --git a/src/uu/stdbuf/src/libstdbuf/src/libstdbuf.rs b/src/uu/stdbuf/src/libstdbuf/src/libstdbuf.rs
index 094c18ba6..fa36d4ab5 100644
--- a/src/uu/stdbuf/src/libstdbuf/src/libstdbuf.rs
+++ b/src/uu/stdbuf/src/libstdbuf/src/libstdbuf.rs
@@ -2,7 +2,6 @@
 
 #[macro_use]
 extern crate cpp;
-extern crate libc;
 
 #[macro_use]
 extern crate uucore;
diff --git a/src/uu/stdbuf/src/stdbuf.rs b/src/uu/stdbuf/src/stdbuf.rs
index dcae42d99..86523144c 100644
--- a/src/uu/stdbuf/src/stdbuf.rs
+++ b/src/uu/stdbuf/src/stdbuf.rs
@@ -7,9 +7,6 @@
 
 // spell-checker:ignore (ToDO) tempdir dyld dylib dragonflybsd optgrps libstdbuf
 
-extern crate getopts;
-extern crate tempfile;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/sum/src/sum.rs b/src/uu/sum/src/sum.rs
index 3fb28d15d..5c1652196 100644
--- a/src/uu/sum/src/sum.rs
+++ b/src/uu/sum/src/sum.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) sysv
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/sync/src/sync.rs b/src/uu/sync/src/sync.rs
index 018ed8398..5d4cb4395 100644
--- a/src/uu/sync/src/sync.rs
+++ b/src/uu/sync/src/sync.rs
@@ -7,7 +7,6 @@
 
 /* Last synced with: sync (GNU coreutils) 8.13 */
 
-extern crate clap;
 extern crate libc;
 
 #[macro_use]
diff --git a/src/uu/tac/src/tac.rs b/src/uu/tac/src/tac.rs
index 91bbea4d8..843babac9 100644
--- a/src/uu/tac/src/tac.rs
+++ b/src/uu/tac/src/tac.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) sbytes slen
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/tail/src/platform/redox.rs b/src/uu/tail/src/platform/redox.rs
index 2c1efd318..bc6fb5220 100644
--- a/src/uu/tail/src/platform/redox.rs
+++ b/src/uu/tail/src/platform/redox.rs
@@ -1,7 +1,5 @@
 // spell-checker:ignore (ToDO) ENOSYS EPERM
 
-extern crate syscall;
-
 use self::syscall::{Error, ENOSYS, EPERM};
 
 pub type Pid = usize;
diff --git a/src/uu/tail/src/platform/unix.rs b/src/uu/tail/src/platform/unix.rs
index bbb1f1965..167f693e6 100644
--- a/src/uu/tail/src/platform/unix.rs
+++ b/src/uu/tail/src/platform/unix.rs
@@ -9,8 +9,6 @@
 
 // spell-checker:ignore (ToDO) errno EPERM ENOSYS
 
-extern crate libc;
-
 use std::io::Error;
 
 pub type Pid = libc::pid_t;
diff --git a/src/uu/tail/src/tail.rs b/src/uu/tail/src/tail.rs
index 949c7e5ca..cca70ee0e 100644
--- a/src/uu/tail/src/tail.rs
+++ b/src/uu/tail/src/tail.rs
@@ -9,9 +9,6 @@
 
 // spell-checker:ignore (ToDO) seekable seek'd tail'ing ringbuffer ringbuf
 
-extern crate getopts;
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/tee/src/tee.rs b/src/uu/tee/src/tee.rs
index 1f6e26541..e29945382 100644
--- a/src/uu/tee/src/tee.rs
+++ b/src/uu/tee/src/tee.rs
@@ -5,10 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-extern crate getopts;
-
-extern crate uucore;
-
 use std::fs::OpenOptions;
 use std::io::{copy, sink, stdin, stdout, Error, ErrorKind, Read, Result, Write};
 use std::path::{Path, PathBuf};
diff --git a/src/uu/test/src/test.rs b/src/uu/test/src/test.rs
index dafe1913c..4394e4a8e 100644
--- a/src/uu/test/src/test.rs
+++ b/src/uu/test/src/test.rs
@@ -7,10 +7,6 @@
 
 // spell-checker:ignore (ToDO) retval paren prec subprec cond
 
-extern crate libc;
-#[cfg(target_os = "redox")]
-extern crate syscall;
-
 use std::collections::HashMap;
 use std::str::from_utf8;
 
diff --git a/src/uu/timeout/src/timeout.rs b/src/uu/timeout/src/timeout.rs
index 59bbeca8f..0dd7c2016 100644
--- a/src/uu/timeout/src/timeout.rs
+++ b/src/uu/timeout/src/timeout.rs
@@ -7,10 +7,6 @@
 
 // spell-checker:ignore (ToDO) tstr sigstr cmdname setpgid
 
-extern crate getopts;
-extern crate libc;
-extern crate time;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/touch/src/touch.rs b/src/uu/touch/src/touch.rs
index ffde06ca6..913a5be9b 100644
--- a/src/uu/touch/src/touch.rs
+++ b/src/uu/touch/src/touch.rs
@@ -8,9 +8,7 @@
 
 // spell-checker:ignore (ToDO) filetime strptime utcoff strs datetime MMDDhhmm
 
-extern crate clap;
 pub extern crate filetime;
-extern crate time;
 
 #[macro_use]
 extern crate uucore;
diff --git a/src/uu/tr/src/tr.rs b/src/uu/tr/src/tr.rs
index de65622a3..d60d2559a 100644
--- a/src/uu/tr/src/tr.rs
+++ b/src/uu/tr/src/tr.rs
@@ -10,10 +10,6 @@
 
 // spell-checker:ignore (ToDO) allocs bset dflag cflag sflag tflag
 
-extern crate bit_set;
-extern crate fnv;
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/truncate/src/truncate.rs b/src/uu/truncate/src/truncate.rs
index 04f79f883..58bd55bcf 100644
--- a/src/uu/truncate/src/truncate.rs
+++ b/src/uu/truncate/src/truncate.rs
@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) RFILE refsize rfilename fsize tsize
 
-extern crate clap;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/tsort/src/tsort.rs b/src/uu/tsort/src/tsort.rs
index dc7785645..0a0023031 100644
--- a/src/uu/tsort/src/tsort.rs
+++ b/src/uu/tsort/src/tsort.rs
@@ -6,8 +6,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-extern crate getopts;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/tty/src/tty.rs b/src/uu/tty/src/tty.rs
index 177fc8668..110f76d30 100644
--- a/src/uu/tty/src/tty.rs
+++ b/src/uu/tty/src/tty.rs
@@ -9,9 +9,6 @@
 
 // spell-checker:ignore (ToDO) ttyname filedesc
 
-extern crate getopts;
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/uname/src/uname.rs b/src/uu/uname/src/uname.rs
index 3e386aed3..b9b75e2a4 100644
--- a/src/uu/uname/src/uname.rs
+++ b/src/uu/uname/src/uname.rs
@@ -10,8 +10,6 @@
 
 // spell-checker:ignore (ToDO) nodename kernelname kernelrelease kernelversion sysname hwplatform mnrsv
 
-extern crate clap;
-extern crate platform_info;
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/unexpand/src/unexpand.rs b/src/uu/unexpand/src/unexpand.rs
index 57aa29b0a..59a2dc6a0 100644
--- a/src/uu/unexpand/src/unexpand.rs
+++ b/src/uu/unexpand/src/unexpand.rs
@@ -9,9 +9,6 @@
 
 // spell-checker:ignore (ToDO) nums aflag uflag scol prevtab amode ctype cwidth nbytes lastcol pctype
 
-extern crate getopts;
-extern crate unicode_width;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/uniq/src/uniq.rs b/src/uu/uniq/src/uniq.rs
index 278106873..9261dba9b 100644
--- a/src/uu/uniq/src/uniq.rs
+++ b/src/uu/uniq/src/uniq.rs
@@ -5,8 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-extern crate clap;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/unlink/src/unlink.rs b/src/uu/unlink/src/unlink.rs
index 6fad6ca48..b85b6ea94 100644
--- a/src/uu/unlink/src/unlink.rs
+++ b/src/uu/unlink/src/unlink.rs
@@ -9,9 +9,6 @@
 
 // spell-checker:ignore (ToDO) lstat IFLNK IFMT IFREG
 
-extern crate getopts;
-extern crate libc;
-
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/uptime/src/uptime.rs b/src/uu/uptime/src/uptime.rs
index f53a15885..83d258818 100644
--- a/src/uu/uptime/src/uptime.rs
+++ b/src/uu/uptime/src/uptime.rs
@@ -10,10 +10,6 @@
 
 // spell-checker:ignore (ToDO) getloadavg upsecs updays nusers loadavg boottime uphours upmins
 
-extern crate chrono;
-extern crate clap;
-extern crate time;
-
 use chrono::{Local, TimeZone, Utc};
 use clap::{App, Arg};
 
diff --git a/src/uu/users/src/users.rs b/src/uu/users/src/users.rs
index 4b4cdbeeb..4bb628441 100644
--- a/src/uu/users/src/users.rs
+++ b/src/uu/users/src/users.rs
@@ -10,7 +10,6 @@
 // Allow dead code here in order to keep all fields, constants here, for consistency.
 #![allow(dead_code)]
 
-extern crate clap;
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/wc/src/wc.rs b/src/uu/wc/src/wc.rs
index a0687e251..c6d5d72d8 100644
--- a/src/uu/wc/src/wc.rs
+++ b/src/uu/wc/src/wc.rs
@@ -7,7 +7,6 @@
 
 // spell-checker:ignore (ToDO) fpath
 
-extern crate clap;
 #[macro_use]
 extern crate uucore;
 
diff --git a/src/uu/whoami/src/platform/windows.rs b/src/uu/whoami/src/platform/windows.rs
index 7f9490a76..1d65281bd 100644
--- a/src/uu/whoami/src/platform/windows.rs
+++ b/src/uu/whoami/src/platform/windows.rs
@@ -9,8 +9,6 @@
 
 // spell-checker:ignore (ToDO) advapi lmcons winnt getusername WCHAR UNLEN
 
-extern crate advapi32;
-extern crate uucore;
 extern crate winapi;
 
 use self::winapi::shared::lmcons;
diff --git a/src/uucore/src/lib/features/fs.rs b/src/uucore/src/lib/features/fs.rs
index 6fda8460a..adf4f6f82 100644
--- a/src/uucore/src/lib/features/fs.rs
+++ b/src/uucore/src/lib/features/fs.rs
@@ -6,11 +6,6 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
-#[cfg(windows)]
-extern crate dunce;
-#[cfg(target_os = "redox")]
-extern crate termion;
-
 #[cfg(unix)]
 use libc::{
     mode_t, S_IRGRP, S_IROTH, S_IRUSR, S_ISGID, S_ISUID, S_ISVTX, S_IWGRP, S_IWOTH, S_IWUSR,
diff --git a/src/uucore/src/lib/lib.rs b/src/uucore/src/lib/lib.rs
index 5d08dc9ac..6e974f577 100644
--- a/src/uucore/src/lib/lib.rs
+++ b/src/uucore/src/lib/lib.rs
@@ -3,10 +3,6 @@
 // Copyright (C) ~ Alex Lyon <arcterus@mail.com>
 // Copyright (C) ~ Roy Ivy III <rivy.dev@gmail.com>; MIT license
 
-//## external crates
-
-extern crate wild;
-
 // * feature-gated external crates
 #[cfg(feature = "failure")]
 extern crate failure;
diff --git a/src/uucore/src/lib/mods/coreopts.rs b/src/uucore/src/lib/mods/coreopts.rs
index f1e382a3e..f3fb77335 100644
--- a/src/uucore/src/lib/mods/coreopts.rs
+++ b/src/uucore/src/lib/mods/coreopts.rs
@@ -1,5 +1,3 @@
-extern crate getopts;
-
 pub struct HelpText<'a> {
     pub name: &'a str,
     pub version: &'a str,