5b54286640
Remove the "which is required by `{root_obligation}`" post-script in
"the trait `X` is not implemented for `Y`" explanation in E0277. This
information is already conveyed in the notes explaining requirements,
making it redundant while making the text (particularly in labels)
harder to read.
```
error[E0277]: the trait bound `NotCopy: Copy` is not satisfied
--> $DIR/wf-static-type.rs:10:13
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LL | static FOO: IsCopy<Option<NotCopy>> = IsCopy { t: None };
| ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`
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= note: required for `Option<NotCopy>` to implement `Copy`
note: required by a bound in `IsCopy`
--> $DIR/wf-static-type.rs:7:17
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LL | struct IsCopy<T:Copy> { t: T }
| ^^^^ required by this bound in `IsCopy`
```
vs the prior
```
error[E0277]: the trait bound `NotCopy: Copy` is not satisfied
--> $DIR/wf-static-type.rs:10:13
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LL | static FOO: IsCopy<Option<NotCopy>> = IsCopy { t: None };
| ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`, which is required by `Option<NotCopy>: Copy`
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= note: required for `Option<NotCopy>` to implement `Copy`
note: required by a bound in `IsCopy`
--> $DIR/wf-static-type.rs:7:17
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LL | struct IsCopy<T:Copy> { t: T }
| ^^^^ required by this bound in `IsCopy`
```
48 lines
2.1 KiB
Plaintext
48 lines
2.1 KiB
Plaintext
error[E0277]: the type `UnsafeCell<i32>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
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--> $DIR/not-panic-safe-4.rs:9:14
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LL | assert::<&RefCell<i32>>();
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| ^^^^^^^^^^^^^ `UnsafeCell<i32>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
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= help: within `RefCell<i32>`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<i32>`
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note: required because it appears within the type `RefCell<i32>`
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--> $SRC_DIR/core/src/cell.rs:LL:COL
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= note: required for `&RefCell<i32>` to implement `UnwindSafe`
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note: required by a bound in `assert`
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--> $DIR/not-panic-safe-4.rs:6:14
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LL | fn assert<T: UnwindSafe + ?Sized>() {}
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| ^^^^^^^^^^ required by this bound in `assert`
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help: consider removing the leading `&`-reference
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LL - assert::<&RefCell<i32>>();
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LL + assert::<RefCell<i32>>();
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error[E0277]: the type `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
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--> $DIR/not-panic-safe-4.rs:9:14
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LL | assert::<&RefCell<i32>>();
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| ^^^^^^^^^^^^^ `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
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= help: within `RefCell<i32>`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<isize>`
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note: required because it appears within the type `Cell<isize>`
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--> $SRC_DIR/core/src/cell.rs:LL:COL
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note: required because it appears within the type `RefCell<i32>`
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--> $SRC_DIR/core/src/cell.rs:LL:COL
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= note: required for `&RefCell<i32>` to implement `UnwindSafe`
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note: required by a bound in `assert`
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--> $DIR/not-panic-safe-4.rs:6:14
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LL | fn assert<T: UnwindSafe + ?Sized>() {}
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| ^^^^^^^^^^ required by this bound in `assert`
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help: consider removing the leading `&`-reference
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LL - assert::<&RefCell<i32>>();
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LL + assert::<RefCell<i32>>();
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0277`.
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