Replace deprecated methods.

src/echo/echo.rs

@@ -174,7 +174,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
     };
 
     if !free.is_empty() {
-        let string = free.connect(" ");
+        let string = free.join(" ");
         if options.escape {
             let mut prev_was_slash = false;
             let mut iter = string.chars().enumerate();

src/hostname/hostname.rs

@@ -55,7 +55,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
     opts.optflag("h", "help", "Show help");
     opts.optflag("V", "version", "Show program's version");
 
-    let matches = match opts.parse(args.tail()) {
+    let matches = match opts.parse(&args[1..]) {
         Ok(m) => { m }
         _ => { help_menu(program, opts); return 0; }
     };

src/ptx/ptx.rs

@@ -421,7 +421,7 @@ fn adjust_tex_str(context: &str) -> String {
     let ws_reg = Regex::new(r"[\t\n\v\f\r ]").unwrap();
     let mut fix: String = ws_reg.replace_all(context, " ").trim().to_string();
     let mapped_chunks: Vec<String> = fix.chars().map(tex_mapper).collect();
-    fix = mapped_chunks.connect("");
+    fix = mapped_chunks.join("");
     fix
 }
 

src/users/users.rs

@@ -117,6 +117,6 @@ fn exec(filename: &str) {
 
     if users.len() > 0 {
         users.sort();
-        println!("{}", users.connect(" "));
+        println!("{}", users.join(" "));
     }
 }

src/yes/yes.rs

@@ -50,7 +50,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
     let string = if matches.free.is_empty() {
         "y".to_string()
     } else {
-        matches.free.connect(" ")
+        matches.free.join(" ")
     };
 
     exec(&string[..]);