| error: `#[derive(From)]` used on a struct with no fields |
| --> $DIR/deriving-from-wrong-target.rs:8:10 |
| | |
| LL | #[derive(From)] |
| | ^^^^ |
| LL | |
| LL | struct S1; |
| | ^^ |
| | |
| = note: `#[derive(From)]` can only be used on structs with exactly one field |
| |
| error: `#[derive(From)]` used on a struct with no fields |
| --> $DIR/deriving-from-wrong-target.rs:12:10 |
| | |
| LL | #[derive(From)] |
| | ^^^^ |
| LL | |
| LL | struct S2 {} |
| | ^^ |
| | |
| = note: `#[derive(From)]` can only be used on structs with exactly one field |
| |
| error: `#[derive(From)]` used on a struct with multiple fields |
| --> $DIR/deriving-from-wrong-target.rs:16:10 |
| | |
| LL | #[derive(From)] |
| | ^^^^ |
| LL | |
| LL | struct S3(u32, bool); |
| | ^^ |
| | |
| = note: `#[derive(From)]` can only be used on structs with exactly one field |
| |
| error: `#[derive(From)]` used on a struct with multiple fields |
| --> $DIR/deriving-from-wrong-target.rs:20:10 |
| | |
| LL | #[derive(From)] |
| | ^^^^ |
| LL | |
| LL | struct S4 { |
| | ^^ |
| | |
| = note: `#[derive(From)]` can only be used on structs with exactly one field |
| |
| error: `#[derive(From)]` used on an enum |
| --> $DIR/deriving-from-wrong-target.rs:27:10 |
| | |
| LL | #[derive(From)] |
| | ^^^^ |
| LL | |
| LL | enum E1 {} |
| | ^^ |
| | |
| = note: `#[derive(From)]` can only be used on structs with exactly one field |
| |
| error[E0277]: the size for values of type `T` cannot be known at compilation time |
| --> $DIR/deriving-from-wrong-target.rs:33:11 |
| | |
| LL | struct SUnsizedField<T: ?Sized> { |
| | - this type parameter needs to be `Sized` |
| LL | last: T, |
| | ^ doesn't have a size known at compile-time |
| | |
| = help: unsized fn params are gated as an unstable feature |
| help: consider removing the `?Sized` bound to make the type parameter `Sized` |
| | |
| LL - struct SUnsizedField<T: ?Sized> { |
| LL + struct SUnsizedField<T> { |
| | |
| help: function arguments must have a statically known size, borrowed types always have a known size |
| | |
| LL | last: &T, |
| | + |
| |
| error: aborting due to 6 previous errors |
| |
| For more information about this error, try `rustc --explain E0277`. |