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Remove use of on_unimplemented

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It errors in today’s Nightly:

```rust
error[E0557]: feature has been removed
 --> components/script/lib.rs:9:12
  |
9 | #![feature(on_unimplemented)]
  |            ^^^^^^^^^^^^^^^^ feature has been removed

error[E0658]: this is an internal attribute that will never be stable
  --> components/script/dom/bindings/conversions.rs:77:1
   |
77 | #[rustc_on_unimplemented(message = "The IDL interface `{Self}` is not derived from `{T}`.")]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: for more information, see https://github.com/rust-lang/rust/issues/29642
   = help: add `#![feature(rustc_attrs)]` to the crate attributes to enable

error: aborting due to 2 previous errors
```
This commit is contained in:
Simon Sapin 2019-11-08 11:38:24 +01:00
parent 9a518cf797
commit f2e7b4ec8c
2 changed files with 0 additions and 2 deletions
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1
components/script/dom/bindings/conversions.rs
View file

@ -74,7 +74,6 @@ pub trait IDLInterface {
}
/// A trait to mark an IDL interface as deriving from another one.
#[rustc_on_unimplemented(message = "The IDL interface `{Self}` is not derived from `{T}`.")]
pub trait DerivedFrom<T: Castable>: Castable {}
impl<T: Float + ToJSValConvertible> ToJSValConvertible for Finite<T> {

1
components/script/lib.rs
View file

@ -6,7 +6,6 @@
#![feature(core_intrinsics)]
#![feature(drain_filter)]
#![feature(inner_deref)]
#![feature(on_unimplemented)]
#![feature(plugin)]
#![deny(unsafe_code)]
#![allow(non_snake_case)]