error[E0070]: invalid left-hand side of assignment
  --> $DIR/bad-expr-lhs.rs:2:7
   |
LL |     1 = 2;
   |     - ^
   |     |
   |     cannot assign to this expression

error[E0067]: invalid left-hand side of assignment
  --> $DIR/bad-expr-lhs.rs:3:7
   |
LL |     1 += 2;
   |     - ^^
   |     |
   |     cannot assign to this expression

error[E0070]: invalid left-hand side of assignment
  --> $DIR/bad-expr-lhs.rs:4:12
   |
LL |     (1, 2) = (3, 4);
   |      -     ^
   |      |
   |      cannot assign to this expression

error[E0070]: invalid left-hand side of assignment
  --> $DIR/bad-expr-lhs.rs:4:12
   |
LL |     (1, 2) = (3, 4);
   |         -  ^
   |         |
   |         cannot assign to this expression

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0067, E0070.
For more information about an error, try `rustc --explain E0067`.