Fix get_mut deprecation warnings

src/cut/ranges.rs

@@ -68,7 +68,7 @@ impl Range {
 
             while j < ranges.len() && ranges[j].low <= ranges[i].high {
                 let j_high = ranges.remove(j).unwrap().high;
-                ranges.get_mut(i).high = max(ranges[i].high, j_high);
+                ranges[i].high = max(ranges[i].high, j_high);
             }
         }
 

src/fmt/linebreak.rs

@@ -229,7 +229,7 @@ fn find_kp_breakpoints<'a, T: Iterator<&'a WordInfo<'a>>>(iter: T, args: &BreakA
         // go through each active break, extending it and possibly adding a new active
         // break if we are above the minimum required length
         for &i in active_breaks.iter() {
-            let active = linebreaks.get_mut(i);
+            let active = &mut linebreaks[i];
             // normalize demerits to avoid overflow, and record if this is the least
             active.demerits -= least_demerits;
             if active.demerits < ld_next {

src/paste/paste.rs

@@ -99,7 +99,7 @@ fn paste(filenames: Vec<String>, serial: bool, delimiters: &str) {
                     match file.read_line() {
                         Ok(line) => output.push_str(line.as_slice().slice_to(line.len() - 1)),
                         Err(f) => if f.kind == io::EndOfFile {
-                            *eof.get_mut(i) = true;
+                            eof[i] = true;
                             eof_count += 1;
                         } else {
                             crash!(1, "{}", f.to_string());