uucore_procs+uu: specify uucore::show_error

This allows crates to use `#[uucore_procs::gen_uumain]` without `use uucore::show_error` or

    #[macro_use]
    extern crate uucore;

Removed unecessary usage

src/uu/arch/src/arch.rs

@@ -6,9 +6,6 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
-
 use platform_info::*;
 
 use clap::{crate_version, App};

src/uu/base32/src/base32.rs

@@ -5,9 +5,6 @@
 // For the full copyright and license information, please view the LICENSE file
 // that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
-
 use std::io::{stdin, Read};
 
 use clap::App;

src/uu/base64/src/base64.rs

@@ -6,9 +6,6 @@
 // For the full copyright and license information, please view the LICENSE file
 // that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
-
 use uu_base32::base_common;
 pub use uu_base32::uu_app;
 

src/uu/basenc/src/basenc.rs

@@ -8,9 +8,6 @@
 
 //spell-checker:ignore (args) lsbf msbf
 
-#[macro_use]
-extern crate uucore;
-
 use clap::{App, Arg};
 use uu_base32::base_common::{self, Config, BASE_CMD_PARSE_ERROR};
 

src/uu/cat/src/cat.rs

@@ -12,8 +12,6 @@
 
 #[cfg(unix)]
 extern crate unix_socket;
-#[macro_use]
-extern crate uucore;
 
 // last synced with: cat (GNU coreutils) 8.13
 use clap::{crate_version, App, Arg};

src/uu/chgrp/src/chgrp.rs

@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) COMFOLLOW Chowner RFILE RFILE's derefer dgid nonblank nonprint nonprinting
 
-#[macro_use]
-extern crate uucore;
 use uucore::display::Quotable;
 pub use uucore::entries;
 use uucore::error::{FromIo, UResult, USimpleError};

src/uu/chown/src/chown.rs

@@ -7,8 +7,6 @@
 
 // spell-checker:ignore (ToDO) COMFOLLOW Passwd RFILE RFILE's derefer dgid duid groupname
 
-#[macro_use]
-extern crate uucore;
 use uucore::display::Quotable;
 pub use uucore::entries::{self, Group, Locate, Passwd};
 use uucore::perms::{chown_base, options, IfFrom};

src/uu/df/src/df.rs

@@ -6,8 +6,6 @@
 // For the full copyright and license information, please view the LICENSE file
 // that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
 use uucore::error::UError;
 use uucore::error::UResult;
 #[cfg(unix)]

src/uu/dirname/src/dirname.rs

@@ -5,9 +5,6 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
-
 use clap::{crate_version, App, Arg};
 use std::path::Path;
 use uucore::display::print_verbatim;

src/uu/echo/src/echo.rs

@@ -6,9 +6,6 @@
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
-
 use clap::{crate_version, App, Arg};
 use std::io::{self, Write};
 use std::iter::Peekable;

src/uu/expr/src/expr.rs

@@ -5,9 +5,6 @@
 //* For the full copyright and license information, please view the LICENSE
 //* file that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
-
 use clap::{crate_version, App, Arg};
 use uucore::error::{UResult, USimpleError};
 use uucore::InvalidEncodingHandling;

src/uu/false/src/false.rs

@@ -5,9 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
-
 use clap::App;
 use uucore::error::UResult;
 

src/uu/hostid/src/hostid.rs

@@ -7,9 +7,6 @@
 
 // spell-checker:ignore (ToDO) gethostid
 
-#[macro_use]
-extern crate uucore;
-
 use clap::{crate_version, App};
 use libc::c_long;
 use uucore::error::UResult;

src/uu/hostname/src/hostname.rs

@@ -7,9 +7,6 @@
 
 // spell-checker:ignore (ToDO) MAKEWORD addrs hashset
 
-#[macro_use]
-extern crate uucore;
-
 use std::collections::hash_set::HashSet;
 use std::net::ToSocketAddrs;
 use std::str;

src/uu/mktemp/src/mktemp.rs

@@ -8,9 +8,6 @@
 
 // spell-checker:ignore (paths) GPGHome
 
-#[macro_use]
-extern crate uucore;
-
 use clap::{crate_version, App, Arg};
 use uucore::display::{println_verbatim, Quotable};
 use uucore::error::{FromIo, UError, UResult};

src/uu/pwd/src/pwd.rs

@@ -5,9 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
-
 use clap::{crate_version, App, Arg};
 use std::env;
 use std::io;

src/uu/sleep/src/sleep.rs

@@ -5,9 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
-
 use std::thread;
 use std::time::Duration;
 

src/uu/true/src/true.rs

@@ -5,9 +5,6 @@
 //  * For the full copyright and license information, please view the LICENSE
 //  * file that was distributed with this source code.
 
-#[macro_use]
-extern crate uucore;
-
 use clap::App;
 use uucore::error::UResult;
 

src/uu/unlink/src/unlink.rs

@@ -7,9 +7,6 @@
 
 /* last synced with: unlink (GNU coreutils) 8.21 */
 
-#[macro_use]
-extern crate uucore;
-
 use std::fs::remove_file;
 use std::path::Path;
 

src/uu/uptime/src/uptime.rs

@@ -11,8 +11,6 @@
 use chrono::{Local, TimeZone, Utc};
 use clap::{crate_version, App, Arg};
 
-#[macro_use]
-extern crate uucore;
 // import crate time from utmpx
 pub use uucore::libc;
 use uucore::libc::time_t;

src/uu/whoami/src/whoami.rs

@@ -9,8 +9,6 @@
 
 #[macro_use]
 extern crate clap;
-#[macro_use]
-extern crate uucore;
 
 use clap::App;
 

src/uu/yes/src/yes.rs

@@ -12,8 +12,6 @@ use std::io::{self, Write};
 
 #[macro_use]
 extern crate clap;
-#[macro_use]
-extern crate uucore;
 
 use clap::{App, Arg};
 use uucore::error::{UResult, USimpleError};

src/uucore_procs/src/lib.rs

@@ -101,7 +101,7 @@ pub fn gen_uumain(_args: TokenStream, stream: TokenStream) -> TokenStream {
                 Err(e) => {
                     let s = format!("{}", e);
                     if s != "" {
-                        show_error!("{}", s);
+                        uucore::show_error!("{}", s);
                     }
                     if e.usage() {
                         eprintln!("Try '{} --help' for more information.", uucore::execution_phrase());