error: this looks like you are swapping elements of `foo` manually
  --> $DIR/swap.rs:11:5
   |
11 | /     let temp = foo[0];
12 | |     foo[0] = foo[1];
13 | |     foo[1] = temp;
   | |_________________^ help: try: `foo.swap(0, 1)`
   |
   = note: `-D manual-swap` implied by `-D warnings`

error: this looks like you are swapping elements of `foo` manually
  --> $DIR/swap.rs:20:5
   |
20 | /     let temp = foo[0];
21 | |     foo[0] = foo[1];
22 | |     foo[1] = temp;
   | |_________________^ help: try: `foo.swap(0, 1)`

error: this looks like you are swapping elements of `foo` manually
  --> $DIR/swap.rs:29:5
   |
29 | /     let temp = foo[0];
30 | |     foo[0] = foo[1];
31 | |     foo[1] = temp;
   | |_________________^ help: try: `foo.swap(0, 1)`

error: this looks like you are swapping `a` and `b` manually
  --> $DIR/swap.rs:47:7
   |
47 |       ; let t = a;
   |  _______^
48 | |     a = b;
49 | |     b = t;
   | |_________^ help: try: `std::mem::swap(&mut a, &mut b)`
   |
   = note: or maybe you should use `std::mem::replace`?

error: this looks like you are swapping `c.0` and `a` manually
  --> $DIR/swap.rs:56:7
   |
56 |       ; let t = c.0;
   |  _______^
57 | |     c.0 = a;
58 | |     a = t;
   | |_________^ help: try: `std::mem::swap(&mut c.0, &mut a)`
   |
   = note: or maybe you should use `std::mem::replace`?

error: this looks like you are trying to swap `a` and `b`
  --> $DIR/swap.rs:44:5
   |
44 | /     a = b;
45 | |     b = a;
   | |_________^ help: try: `std::mem::swap(&mut a, &mut b)`
   |
   = note: `-D almost-swapped` implied by `-D warnings`
   = note: or maybe you should use `std::mem::replace`?

error: this looks like you are trying to swap `c.0` and `a`
  --> $DIR/swap.rs:53:5
   |
53 | /     c.0 = a;
54 | |     a = c.0;
   | |___________^ help: try: `std::mem::swap(&mut c.0, &mut a)`
   |
   = note: or maybe you should use `std::mem::replace`?