error[E0368]: binary assignment operation `+=` cannot be applied to type `Foo` | |
--> $DIR/assignment-operator-unimplemented.rs:6:3 | |
| | |
LL | a += *b; | |
| -^^^^^^ | |
| | | |
| cannot use `+=` on type `Foo` | |
| | |
= note: an implementation of `std::ops::AddAssign` might be missing for `Foo` | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0368`. |