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error[E0070]: invalid left-hand side of assignment
--> $DIR/assign-non-lval-mut-ref.rs:5:27
|
LL | x.last_mut().unwrap() = 2;
| --------------------- ^
| |
| cannot assign to this expression
|
help: consider dereferencing here to assign to the mutably borrowed value
|
LL | *x.last_mut().unwrap() = 2;
| +
error[E0368]: binary assignment operation `+=` cannot be applied to type `&mut usize`
--> $DIR/assign-non-lval-mut-ref.rs:7:5
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LL | x.last_mut().unwrap() += 1;
| ---------------------^^^^^
| |
| cannot use `+=` on type `&mut usize`
|
help: `+=` can be used on `usize`, you can dereference `x.last_mut().unwrap()`
|
LL | *x.last_mut().unwrap() += 1;
| +
error[E0308]: mismatched types
--> $DIR/assign-non-lval-mut-ref.rs:11:9
|
LL | let y = x.last_mut().unwrap();
| --------------------- expected due to this value
LL | y = 2;
| ^ expected `&mut usize`, found integer
|
help: consider dereferencing here to assign to the mutably borrowed value
|
LL | *y = 2;
| +
error[E0368]: binary assignment operation `+=` cannot be applied to type `&mut usize`
--> $DIR/assign-non-lval-mut-ref.rs:13:5
|
LL | y += 1;
| -^^^^^
| |
| cannot use `+=` on type `&mut usize`
|
help: `+=` can be used on `usize`, you can dereference `y`
|
LL | *y += 1;
| +
error: aborting due to 4 previous errors
Some errors have detailed explanations: E0070, E0308, E0368.
For more information about an error, try `rustc --explain E0070`.
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